November 2019 - LKP - Ml01.01.Org

[xfs] 73e5fff98b: kmsg.dev/zero:Can't_open_blockdev

by kernel test robot

FYI, we noticed the following commit (built with gcc-7): commit: 73e5fff98b6446de1490a8d7809121b0108d49f4 ("xfs: switch to use the new mount-api") https://git.kernel.org/cgit/fs/xfs/xfs-linux.git xfs-5.5-merge in testcase: ltp with following parameters: disk: 1HDD fs: xfs test: fs-03 test-description: The LTP testsuite contains a collection of tools for testing the Linux kernel and related features. test-url: http://linux-test-project.github.io/ on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen(a)intel.com> [ 135.976643] LTP: starting fs_fill [ 135.993912] /dev/zero: Can't open blockdev [ 136.020327] raid6: sse2x4 gen() 14769 MB/s [ 136.037281] raid6: sse2x4 xor() 8927 MB/s [ 136.054236] raid6: sse2x2 gen() 12445 MB/s [ 136.071397] raid6: sse2x2 xor() 7441 MB/s [ 136.089313] raid6: sse2x1 gen() 10089 MB/s [ 136.107334] raid6: sse2x1 xor() 7201 MB/s [ 136.108198] raid6: using algorithm sse2x4 gen() 14769 MB/s [ 136.109320] raid6: .... xor() 8927 MB/s, rmw enabled [ 136.111966] raid6: using ssse3x2 recovery algorithm [ 136.122740] xor: automatically using best checksumming function avx [ 136.187956] Btrfs loaded, crc32c=crc32c-intel [ 136.216946] fuse: init (API version 7.31) [ 136.327654] EXT4-fs (loop0): mounting ext2 file system using the ext4 subsystem [ 136.334974] EXT4-fs (loop0): mounted filesystem without journal. Opts: (null) [ 136.338933] Mounted ext2 file system at /tmp/ltp-bl4kncm4Ti/g2oJfj/mntpoint supports timestamps until 2038 (0x7fffffff) [ 137.897422] EXT4-fs (loop0): mounting ext3 file system using the ext4 subsystem [ 137.908242] EXT4-fs (loop0): mounted filesystem with ordered data mode. Opts: (null) [ 137.910111] Mounted ext3 file system at /tmp/ltp-bl4kncm4Ti/g2oJfj/mntpoint supports timestamps until 2038 (0x7fffffff) To reproduce: # build kernel cd linux cp config-5.4.0-rc3-00117-g73e5fff98b644 .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install cd <mod-install-dir> find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email Thanks, Rong Chen

1 year, 2 months

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[perf evsel] 076f2986d3: BUG:sleeping_function_called_from_invalid_context_at_kernel/events/core.c

by kernel test robot

FYI, we noticed the following commit (built with gcc-7): commit: 076f2986d3dc78d8f60d35d34dacf3d59d3a59c5 ("perf evsel: Support opening on a specific CPU") https://git.kernel.org/cgit/linux/kernel/git/ak/linux-misc.git perf/stat-scale-8 in testcase: perf-sanity-tests with following parameters: perf_compiler: gcc ucode: 0x27 on test machine: 8 threads Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 8G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +-----------------------------------------------+------------+------------+ | | 5b336ec4fb | 076f2986d3 | +-----------------------------------------------+------------+------------+ | boot_successes | 6 | 0 | | boot_failures | 0 | 6 | | WARNING:at_kernel/sched/core.c:#__might_sleep | 0 | 6 | | RIP:__might_sleep | 0 | 6 | +-----------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen(a)intel.com> kern :err : [ 62.538355] BUG: sleeping function called from invalid context at kernel/events/core.c:10702 kern :err : [ 62.548862] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5835, name: perf kern :warn : [ 62.556960] CPU: 5 PID: 5835 Comm: perf Not tainted 5.4.0-rc5-00157-g076f2986d3dc7 #1 kern :warn : [ 62.565246] Hardware name: Dell Inc. OptiPlex 9020/0DNKMN, BIOS A05 12/05/2013 kern :warn : [ 62.572939] Call Trace: kern :warn : [ 62.575913] dump_stack+0x5c/0x7b kern :warn : [ 62.579727] ___might_sleep+0x102/0x120 kern :warn : [ 62.584059] __might_fault+0x2b/0x30 kern :warn : [ 62.588128] perf_copy_attr+0x33/0x300 kern :warn : [ 62.592340] __do_sys_perf_event_open+0x87/0xcf0 kern :warn : [ 62.597402] do_syscall_64+0x5b/0x1d0 kern :warn : [ 62.601505] entry_SYSCALL_64_after_hwframe+0x44/0xa9 kern :warn : [ 62.607008] RIP: 0033:0x7f865a968469 kern :warn : [ 62.611055] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ff 49 2b 00 f7 d8 64 89 01 48 kern :warn : [ 62.630651] RSP: 002b:00007fff9cfe8848 EFLAGS: 00000246 ORIG_RAX: 000000000000012a kern :warn : [ 62.638636] RAX: ffffffffffffffda RBX: 000055bfa2505a90 RCX: 00007f865a968469 kern :warn : [ 62.646233] RDX: 00000000ffffffff RSI: 00000000000016cc RDI: 000055bfa2505aa0 kern :warn : [ 62.653836] RBP: 00007fff9cfe8960 R08: 0000000000000008 R09: 0000000000000008 kern :warn : [ 62.661406] R10: 00000000ffffffff R11: 0000000000000246 R12: 00000000ffffffff kern :warn : [ 62.668986] R13: 00000000000016cc R14: 00000000ffffffff R15: 0000000000000008 kern :warn : [ 62.676550] ------------[ cut here ]------------ kern :warn : [ 62.681622] WARNING: CPU: 5 PID: 5835 at lib/usercopy.c:12 _copy_from_user+0x69/0xa0 kern :warn : [ 62.691430] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver binfmt_misc btrfs xor zstd_decompress zstd_compress raid6_pq libcrc32c sr_mod cdrom sd_mod sg snd_hda_codec_hdmi ata_generic pata_acpi intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_realtek snd_hda_codec_generic kvm_intel i915 ledtrig_audio mei_wdt kvm snd_hda_intel dcdbas snd_intel_nhlt irqbypass crct10dif_pclmul drm_kms_helper snd_hda_codec crc32_pclmul snd_hda_core crc32c_intel syscopyarea ghash_clmulni_intel sysfillrect snd_hwdep aesni_intel sysimgblt snd_pcm fb_sys_fops crypto_simd mei_me snd_timer ata_piix cryptd glue_helper snd pcspkr drm libata i2c_i801 joydev mei lpc_ich soundcore video ip_tables kern :warn : [ 62.758469] CPU: 5 PID: 5835 Comm: perf Tainted: G W 5.4.0-rc5-00157-g076f2986d3dc7 #1 kern :warn : [ 62.768169] Hardware name: Dell Inc. OptiPlex 9020/0DNKMN, BIOS A05 12/05/2013 kern :warn : [ 62.775905] RIP: 0010:_copy_from_user+0x69/0xa0 kern :warn : [ 62.780988] Code: 48 89 ea 65 48 8b 04 25 c0 6b 01 00 48 01 da 48 8b 80 d8 22 00 00 72 30 48 39 c2 76 11 48 89 e8 48 85 c0 75 1a 5b 5d 41 5c c3 <0f> 0b eb d2 4c 89 e7 48 89 de 89 ea e8 96 85 5f 00 89 c0 eb e1 48 kern :warn : [ 62.800794] RSP: 0018:ffffc90000cf3e00 EFLAGS: 00010246 kern :warn : [ 62.806562] RAX: 0000000000000000 RBX: 000055bfa2505aa0 RCX: 0000000000000001 kern :warn : [ 62.814241] RDX: 00000000fffc53bd RSI: 000000000000000b RDI: ffffffff8233a790 kern :warn : [ 62.821941] RBP: 0000000000000070 R08: 000000000000092e R09: 0000000000aaaaaa kern :warn : [ 62.829589] R10: 0000000000000003 R11: 00000000ffffffff R12: ffffc90000cf3e90 kern :warn : [ 62.837267] R13: 0000000000000070 R14: 000055bfa2505aa4 R15: 0000000000000070 kern :warn : [ 62.844955] FS: 00007f865d742000(0000) GS:ffff88821eb40000(0000) knlGS:0000000000000000 kern :warn : [ 62.853526] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kern :warn : [ 62.859825] CR2: 000055bfa25050c0 CR3: 0000000208084006 CR4: 00000000001606e0 kern :warn : [ 62.867466] Call Trace: kern :warn : [ 62.870478] perf_copy_attr+0xa5/0x300 kern :warn : [ 62.874795] __do_sys_perf_event_open+0x87/0xcf0 kern :warn : [ 62.879957] do_syscall_64+0x5b/0x1d0 kern :warn : [ 62.884184] entry_SYSCALL_64_after_hwframe+0x44/0xa9 kern :warn : [ 62.889772] RIP: 0033:0x7f865a968469 kern :warn : [ 62.893895] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ff 49 2b 00 f7 d8 64 89 01 48 kern :warn : [ 62.913609] RSP: 002b:00007fff9cfe8848 EFLAGS: 00000246 ORIG_RAX: 000000000000012a kern :warn : [ 62.921663] RAX: ffffffffffffffda RBX: 000055bfa2505a90 RCX: 00007f865a968469 kern :warn : [ 62.929307] RDX: 00000000ffffffff RSI: 00000000000016cc RDI: 000055bfa2505aa0 kern :warn : [ 62.936972] RBP: 00007fff9cfe8960 R08: 0000000000000008 R09: 0000000000000008 kern :warn : [ 62.944607] R10: 00000000ffffffff R11: 0000000000000246 R12: 00000000ffffffff kern :warn : [ 62.952280] R13: 00000000000016cc R14: 00000000ffffffff R15: 0000000000000008 kern :warn : [ 62.959947] ---[ end trace 33de98532d382fbb ]--- To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Rong Chen

1 year, 2 months

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[btrfs] 0670fc0515: WARNING:at_fs/btrfs/volumes.c:#close_fs_devices[btrfs]

by kernel test robot

FYI, we noticed the following commit (built with gcc-7): commit: 0670fc0515994b1cbb1788b9d50b740b692b290e ("btrfs: remove final BUG_ON() in close_fs_devices()") https://git.kernel.org/cgit/linux/kernel/git/jth/linux.git close_fs_devices in testcase: ltp with following parameters: disk: 1HDD fs: btrfs test: io test-description: The LTP testsuite contains a collection of tools for testing the Linux kernel and related features. test-url: http://linux-test-project.github.io/ on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +--------------------------------------------------------+------------+------------+ | | b642ff0797 | 0670fc0515 | +--------------------------------------------------------+------------+------------+ | boot_successes | 4 | 0 | | boot_failures | 0 | 4 | | WARNING:at_fs/btrfs/volumes.c:#close_fs_devices[btrfs] | 0 | 4 | | RIP:close_fs_devices[btrfs] | 0 | 4 | +--------------------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 38.566982] WARNING: CPU: 1 PID: 2524 at fs/btrfs/volumes.c:1129 close_fs_devices+0x217/0x220 [btrfs] [ 38.572292] Modules linked in: loop btrfs xor zstd_decompress zstd_compress raid6_pq libcrc32c dm_mod intel_rapl_msr intel_rapl_common sr_mod cdrom sg crct10dif_pclmul ata_generic pata_acpi crc32_pclmul crc32c_intel ghash_clmulni_intel bochs_drm drm_vram_helper ttm ppdev drm_kms_helper snd_pcm aesni_intel syscopyarea crypto_simd snd_timer sysfillrect cryptd glue_helper snd sysimgblt fb_sys_fops ata_piix soundcore pcspkr joydev serio_raw libata drm i2c_piix4 floppy parport_pc parport ip_tables [ 38.574649] /usr/bin/wget -q --timeout=1800 --tries=1 --local-encoding=UTF-8 http://inn:80/~lkp/cgi-bin/lkp-jobfile-append-var?job_file=/lkp/jobs/sche... -O /dev/null [ 38.574655] [ 38.591682] CPU: 1 PID: 2524 Comm: umount Not tainted 5.4.0-rc6-00141-g0670fc0515994 #5 [ 38.591684] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 38.591731] RIP: 0010:close_fs_devices+0x217/0x220 [btrfs] [ 38.591737] Code: 89 55 10 49 89 55 18 49 83 6c 24 48 01 e9 0d ff ff ff 85 c0 41 89 c4 0f 84 5b ff ff ff e9 aa fe ff ff 0f 0b eb 85 0f 0b eb 88 <0f> 0b eb 8e 0f 1f 44 00 00 66 66 66 66 90 41 55 41 54 45 31 ed 55 [ 38.603898] target ucode: [ 38.603902] [ 38.604241] RSP: 0018:ffffa7b4804efd98 EFLAGS: 00010286 [ 38.609872] 2019-11-09 14:54:14 dmsetup remove_all [ 38.609877] [ 38.615418] RAX: 00000000ffffffff RBX: ffff9b02acb1b400 RCX: 0000000000000000 [ 38.615420] RDX: ffff9b02948a4d00 RSI: 0000000000000001 RDI: ffff9b02acb1b478 [ 38.615421] RBP: ffff9b02ab002000 R08: 0000000000000000 R09: ffffffffc04dc100 [ 38.615423] R10: ffff9b02acb1b600 R11: 0000000000000001 R12: ffff9b02acb1b400 [ 38.615424] R13: ffff9b02acb1b498 R14: dead000000000122 R15: ffff9b02ab002000 [ 38.615426] FS: 00007f57675bfe40(0000) GS:ffff9b033fd00000(0000) knlGS:0000000000000000 [ 38.615428] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.615429] CR2: 00007f5766e02d30 CR3: 0000000196726000 CR4: 00000000000406e0 [ 38.615435] Call Trace: [ 38.615497] btrfs_close_devices+0x55/0xd0 [btrfs] [ 38.621759] 2019-11-09 14:54:14 wipefs -a --force /dev/vda [ 38.621763] [ 38.625995] close_ctree+0x26c/0x2d6 [btrfs] [ 38.626006] generic_shutdown_super+0x6c/0x120 [ 38.630922] 2019-11-09 14:54:14 mkfs -t btrfs /dev/vda [ 38.630927] [ 38.634597] kill_anon_super+0xe/0x30 [ 38.638138] btrfs-progs v4.7.3 [ 38.638142] [ 38.639046] btrfs_kill_super+0x12/0xa0 [btrfs] [ 38.639060] deactivate_locked_super+0x3f/0x70 [ 38.645435] See http://btrfs.wiki.kernel.org for more information. [ 38.645439] [ 38.645985] cleanup_mnt+0xb8/0x150 [ 38.649634] [ 38.652960] task_work_run+0xa3/0xe0 [ 38.652969] exit_to_usermode_loop+0xeb/0xf0 [ 38.652972] do_syscall_64+0x1a7/0x1d0 [ 38.652981] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 38.652987] RIP: 0033:0x7f5766ea4d77 [ 38.658695] Label: (null) [ 38.658699] [ 38.660151] Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d f1 00 2b 00 f7 d8 64 89 01 48 [ 38.660153] RSP: 002b:00007fff86870668 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 38.660155] RAX: 0000000000000000 RBX: 000055c62eec4760 RCX: 00007f5766ea4d77 [ 38.660165] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000055c62eec4940 [ 38.664313] UUID: [ 38.664318] [ 38.666748] RBP: 000055c62eec4940 R08: 000055c62eec5ce0 R09: 0000000000000015 [ 38.666750] R10: 00000000000006b4 R11: 0000000000000246 R12: 00007f57673a6e64 [ 38.666751] R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff868708f0 [ 38.666757] ---[ end trace d80dd6e09789e541 ]--- To reproduce: # build kernel cd linux cp config-5.4.0-rc6-00141-g0670fc0515994 .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install cd <mod-install-dir> find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email Thanks, lkp

1 year, 2 months

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[0-Day CI notification] the service will be paused on Nov 10 (1 PM to 11 PM, PRC time) for lab construction

by Philip Li

Hi all, this is Philip who maintains the 0-Day CI test service. Thanks for anyone who subscribes to the service. We will have a lab power construction tomorrow, thus need to pause the service for 10 hours, at PRC time Nov 10 (from 1 PM to 11 PM) Sorry for any inconvenience caused by this, we will recover the service to be online as early as possible. Thanks

1 year, 2 months

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[scsi] 9393c8de62: Initramfs_unpacking_failed

by kernel test robot

FYI, we noticed the following commit (built with gcc-7): commit: 9393c8de628cf0968d81a17cc11841e42191e041 ("scsi: core: Handle drivers which set sg_tablesize to zero") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master in testcase: xfstests with following parameters: disk: 4HDD fs: xfs test: xfs-group18 test-description: xfstests is a regression test suite for xfs and other files ystems. test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +----------------------------+------------+------------+ | | 8b1062d513 | 9393c8de62 | +----------------------------+------------+------------+ | boot_successes | 8 | 0 | | boot_failures | 0 | 430 | | Initramfs_unpacking_failed | 0 | 430 | +----------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 1.272210] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 1.273715] pci 0000:00:01.0: Activating ISA DMA hang workarounds [ 1.275324] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 1.277815] PCI: CLS 0 bytes, default 64 [ 1.278970] Trying to unpack rootfs image as initramfs... [ 4.011404] Initramfs unpacking failed: broken padding [ 4.099786] Freeing initrd memory: 346408K [ 4.103301] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 4.104965] software IO TLB: mapped [mem 0xbbfd2000-0xbffd2000] (64MB) [ 4.106874] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x29b38900952, max_idle_ns: 440795323692 ns [ 4.119274] Initialise system trusted keyrings To reproduce: # build kernel cd linux cp config-5.4.0-rc2-00003-g9393c8de628cf .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install cd <mod-install-dir> find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email Thanks, lkp

1 year, 2 months

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[block] fa53228721: WARNING:at_block/blk-merge.c:#blk_rq_map_sg

by kernel test robot

FYI, we noticed the following commit (built with gcc-7): commit: fa53228721876515adabc7bc74368490bd97aa3b ("block: avoid blk_bio_segment_split for small I/O operations") https://git.kernel.org/cgit/linux/kernel/git/axboe/linux-block.git for-5.5/block in testcase: xfstests with following parameters: disk: 4HDD fs: xfs test: xfs-group16 test-description: xfstests is a regression test suite for xfs and other files ystems. test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +---------------------------------------------+------------+------------+ | | d2c9be89f8 | fa53228721 | +---------------------------------------------+------------+------------+ | boot_successes | 12 | 0 | | boot_failures | 0 | 16 | | WARNING:at_block/blk-merge.c:#blk_rq_map_sg | 0 | 16 | | RIP:blk_rq_map_sg | 0 | 16 | | kernel_BUG_at_drivers/scsi/scsi_lib.c | 0 | 16 | | invalid_opcode:#[##] | 0 | 16 | | RIP:scsi_init_io | 0 | 16 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 16 | +---------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 203.892883] WARNING: CPU: 0 PID: 443 at block/blk-merge.c:559 blk_rq_map_sg+0x649/0x700 [ 203.897634] Modules linked in: sd_mod scsi_debug xfs libcrc32c dm_mod sr_mod cdrom intel_rapl_msr intel_rapl_common sg ata_generic pata_acpi crct10dif_pclmul crc32_pclmul crc32c_intel bochs_drm ppdev drm_vram_helper ghash_clmulni_intel ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops snd_pcm drm snd_timer snd aesni_intel crypto_simd ata_piix cryptd glue_helper soundcore joydev pcspkr serio_raw libata i2c_piix4 floppy parport_pc parport ip_tables [ 203.910875] CPU: 0 PID: 443 Comm: kworker/0:1H Not tainted 5.4.0-rc2-00027-gfa53228721876 #7 [ 203.913336] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 203.915809] Workqueue: kblockd blk_mq_run_work_fn [ 203.917547] RIP: 0010:blk_rq_map_sg+0x649/0x700 [ 203.919306] Code: 0f 84 83 fb ff ff f7 d0 21 d0 83 c0 01 01 41 0c 01 86 cc 00 00 00 e9 6e fb ff ff 48 8b 04 24 4c 89 e1 8b 40 1c e9 56 fb ff ff <0f> 0b e9 5d fc ff ff 0f 0b 0f 0b 0f 0b 80 3d cf 5b 3b 01 00 74 09 [ 203.924618] RSP: 0018:ffffb420403c3bd8 EFLAGS: 00010202 [ 203.926540] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff8f4f5fe49800 [ 203.928780] RDX: 0000000000001000 RSI: ffff8f4f31832400 RDI: ffffb4204035fb60 [ 203.931084] RBP: ffff8f4f5ed641c0 R08: ffff8f4f5ed641c0 R09: 0000000000000600 [ 203.933389] R10: 0000000000001000 R11: 0000000000001000 R12: ffff8f4f5fe49800 [ 203.935687] R13: 0000000000000002 R14: 0000000000000600 R15: 0000000000000000 [ 203.937962] FS: 0000000000000000(0000) GS:ffff8f4fbfc00000(0000) knlGS:0000000000000000 [ 203.940416] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 203.942414] CR2: 000056365d914000 CR3: 0000000228cb6000 CR4: 00000000000406f0 [ 203.944683] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 203.946992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 203.949261] Call Trace: [ 203.951375] scsi_init_io+0x66/0x170 [ 203.952941] sd_init_command+0x192/0xac0 [sd_mod] [ 203.954775] scsi_queue_rq+0x597/0xac0 [ 203.956361] blk_mq_dispatch_rq_list+0x3da/0x5b0 [ 203.958160] ? syscall_return_via_sysret+0x10/0x7f [ 203.959984] ? __switch_to_asm+0x40/0x70 [ 203.961606] ? __switch_to_asm+0x34/0x70 [ 203.963263] ? elv_rb_del+0x1f/0x30 [ 203.964810] ? deadline_remove_request+0x55/0xc0 [ 203.966618] blk_mq_do_dispatch_sched+0x76/0x120 [ 203.968365] blk_mq_sched_dispatch_requests+0x100/0x170 [ 203.970222] __blk_mq_run_hw_queue+0x60/0x130 [ 203.971930] process_one_work+0x1ae/0x3d0 [ 203.973539] worker_thread+0x3c/0x3b0 [ 203.975115] ? process_one_work+0x3d0/0x3d0 [ 203.976737] kthread+0x11e/0x140 [ 203.978206] ? kthread_park+0x90/0x90 [ 203.979727] ret_from_fork+0x35/0x40 [ 203.981236] ---[ end trace a0fde01679c74e77 ]--- To reproduce: # build kernel cd linux cp config-5.4.0-rc2-00027-gfa53228721876 .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install cd <mod-install-dir> find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email Thanks, lkp

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[sched/fair] 0b0695f2b3: vm-scalability.median 3.1% improvement

by kernel test robot

Greeting, FYI, we noticed a 3.1% improvement of vm-scalability.median due to commit: commit: 0b0695f2b34a4afa3f6e9aa1ff0e5336d8dad912 ("sched/fair: Rework load_balance()") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master in testcase: vm-scalability on test machine: 104 threads Skylake with 192G memory with following parameters: runtime: 300s size: 8T test: anon-cow-seq cpufreq_governor: performance ucode: 0x2000064 test-description: The motivation behind this suite is to exercise functions and regions of the mm/ of the Linux kernel which are of interest to us. test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/ In addition to that, the commit also has significant impact on the following tests: +------------------+-----------------------------------------------------------------------+ | testcase: change | stress-ng: stress-ng.schedpolicy.ops_per_sec 43.0% improvement | | test machine | 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory | | test parameters | class=interrupt | | | cpufreq_governor=performance | | | disk=1HDD | | | nr_threads=100% | | | testtime=30s | | | ucode=0xb000038 | +------------------+-----------------------------------------------------------------------+ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/size/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-rhel-7.6/debian-x86_64-2019-09-23.cgz/300s/8T/lkp-skl-fpga01/anon-cow-seq/vm-scalability/0x2000064 commit: fcf0553db6 ("sched/fair: Remove meaningless imbalance calculation") 0b0695f2b3 ("sched/fair: Rework load_balance()") fcf0553db6f4c793 0b0695f2b34a4afa3f6e9aa1ff0 ---------------- --------------------------- %stddev %change %stddev \ | \ 413301 +3.1% 426103 vm-scalability.median 0.04 ± 2% -34.0% 0.03 ± 12% vm-scalability.median_stddev 43837589 +2.4% 44902458 vm-scalability.throughput 181085 -18.7% 147221 vm-scalability.time.involuntary_context_switches 12762365 ± 2% +3.9% 13262025 vm-scalability.time.minor_page_faults 7773 +2.9% 7997 vm-scalability.time.percent_of_cpu_this_job_got 11449 +1.2% 11589 vm-scalability.time.system_time 12024 +4.7% 12584 vm-scalability.time.user_time 439194 ± 2% +46.0% 641402 ± 2% vm-scalability.time.voluntary_context_switches 1.148e+10 +5.0% 1.206e+10 vm-scalability.workload 0.00 ± 54% +0.0 0.00 ± 17% mpstat.cpu.all.iowait% 4767597 +52.5% 7268430 ± 41% numa-numastat.node1.local_node 4781030 +52.3% 7280347 ± 41% numa-numastat.node1.numa_hit 24.75 -9.1% 22.50 ± 2% vmstat.cpu.id 37.50 +4.7% 39.25 vmstat.cpu.us 6643 ± 3% +15.1% 7647 vmstat.system.cs 12220504 +33.4% 16298593 ± 4% cpuidle.C1.time 260215 ± 6% +55.3% 404158 ± 3% cpuidle.C1.usage 4986034 ± 3% +56.2% 7786811 ± 2% cpuidle.POLL.time 145941 ± 3% +61.2% 235218 ± 2% cpuidle.POLL.usage 1990 +3.0% 2049 turbostat.Avg_MHz 254633 ± 6% +56.7% 398892 ± 4% turbostat.C1 0.04 +0.0 0.05 turbostat.C1% 309.99 +1.5% 314.75 turbostat.RAMWatt 1688 ± 11% +17.4% 1983 ± 5% slabinfo.UNIX.active_objs 1688 ± 11% +17.4% 1983 ± 5% slabinfo.UNIX.num_objs 2460 ± 3% -15.8% 2072 ± 11% slabinfo.dmaengine-unmap-16.active_objs 2460 ± 3% -15.8% 2072 ± 11% slabinfo.dmaengine-unmap-16.num_objs 2814 ± 9% +14.6% 3225 ± 4% slabinfo.sock_inode_cache.active_objs 2814 ± 9% +14.6% 3225 ± 4% slabinfo.sock_inode_cache.num_objs 0.67 ± 5% +0.1 0.73 ± 3% perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_wp_page.__handle_mm_fault.handle_mm_fault 0.68 ± 6% +0.1 0.74 ± 2% perf-profile.calltrace.cycles-pp.alloc_pages_vma.do_huge_pmd_wp_page.__handle_mm_fault.handle_mm_fault.__do_page_fault 0.05 +0.0 0.07 ± 7% perf-profile.children.cycles-pp.schedule 0.06 +0.0 0.08 ± 6% perf-profile.children.cycles-pp.__wake_up_common 0.06 ± 7% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.wake_up_page_bit 0.23 ± 7% +0.0 0.28 ± 5% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.00 +0.1 0.05 perf-profile.children.cycles-pp.drm_fb_helper_sys_imageblit 0.00 +0.1 0.05 perf-profile.children.cycles-pp.sys_imageblit 29026 ± 3% -26.7% 21283 ± 44% numa-vmstat.node0.nr_inactive_anon 30069 ± 3% -20.5% 23905 ± 26% numa-vmstat.node0.nr_shmem 12120 ± 2% -15.5% 10241 ± 12% numa-vmstat.node0.nr_slab_reclaimable 29026 ± 3% -26.7% 21283 ± 44% numa-vmstat.node0.nr_zone_inactive_anon 4010893 +16.1% 4655889 ± 9% numa-vmstat.node1.nr_active_anon 3982581 +16.3% 4632344 ± 9% numa-vmstat.node1.nr_anon_pages 6861 +16.1% 7964 ± 8% numa-vmstat.node1.nr_anon_transparent_hugepages 2317 ± 42% +336.9% 10125 ± 93% numa-vmstat.node1.nr_inactive_anon 6596 ± 4% +18.2% 7799 ± 14% numa-vmstat.node1.nr_kernel_stack 9629 ± 8% +66.4% 16020 ± 41% numa-vmstat.node1.nr_shmem 7558 ± 3% +26.5% 9561 ± 14% numa-vmstat.node1.nr_slab_reclaimable 4010227 +16.1% 4655056 ± 9% numa-vmstat.node1.nr_zone_active_anon 2317 ± 42% +336.9% 10125 ± 93% numa-vmstat.node1.nr_zone_inactive_anon 2859663 ± 2% +46.2% 4179500 ± 36% numa-vmstat.node1.numa_hit 2680260 ± 2% +49.3% 4002218 ± 37% numa-vmstat.node1.numa_local 116661 ± 3% -26.3% 86010 ± 44% numa-meminfo.node0.Inactive 116192 ± 3% -26.7% 85146 ± 44% numa-meminfo.node0.Inactive(anon) 48486 ± 2% -15.5% 40966 ± 12% numa-meminfo.node0.KReclaimable 48486 ± 2% -15.5% 40966 ± 12% numa-meminfo.node0.SReclaimable 120367 ± 3% -20.5% 95642 ± 26% numa-meminfo.node0.Shmem 16210528 +15.2% 18673368 ± 6% numa-meminfo.node1.Active 16210394 +15.2% 18673287 ± 6% numa-meminfo.node1.Active(anon) 14170064 +15.6% 16379835 ± 7% numa-meminfo.node1.AnonHugePages 16113351 +15.3% 18577254 ± 7% numa-meminfo.node1.AnonPages 10534 ± 33% +293.8% 41480 ± 92% numa-meminfo.node1.Inactive 9262 ± 42% +338.2% 40589 ± 93% numa-meminfo.node1.Inactive(anon) 30235 ± 3% +26.5% 38242 ± 14% numa-meminfo.node1.KReclaimable 6594 ± 4% +18.3% 7802 ± 14% numa-meminfo.node1.KernelStack 17083646 +15.1% 19656922 ± 7% numa-meminfo.node1.MemUsed 30235 ± 3% +26.5% 38242 ± 14% numa-meminfo.node1.SReclaimable 38540 ± 8% +66.4% 64117 ± 42% numa-meminfo.node1.Shmem 106342 +19.8% 127451 ± 11% numa-meminfo.node1.Slab 9479688 +4.5% 9905902 proc-vmstat.nr_active_anon 9434298 +4.5% 9856978 proc-vmstat.nr_anon_pages 16194 +4.3% 16895 proc-vmstat.nr_anon_transparent_hugepages 276.75 +3.6% 286.75 proc-vmstat.nr_dirtied 3888633 -1.1% 3845882 proc-vmstat.nr_dirty_background_threshold 7786774 -1.1% 7701168 proc-vmstat.nr_dirty_threshold 39168820 -1.1% 38741444 proc-vmstat.nr_free_pages 50391 +1.0% 50904 proc-vmstat.nr_slab_unreclaimable 257.50 +3.6% 266.75 proc-vmstat.nr_written 9479678 +4.5% 9905895 proc-vmstat.nr_zone_active_anon 1501517 -5.9% 1412958 proc-vmstat.numa_hint_faults 1075936 -13.1% 934706 proc-vmstat.numa_hint_faults_local 17306395 +4.8% 18141722 proc-vmstat.numa_hit 5211079 +4.2% 5427541 proc-vmstat.numa_huge_pte_updates 17272620 +4.8% 18107691 proc-vmstat.numa_local 33774 +0.8% 34031 proc-vmstat.numa_other 690793 ± 3% -13.7% 596166 ± 2% proc-vmstat.numa_pages_migrated 2.669e+09 +4.2% 2.78e+09 proc-vmstat.numa_pte_updates 2.755e+09 +5.6% 2.909e+09 proc-vmstat.pgalloc_normal 13573227 ± 2% +3.6% 14060842 proc-vmstat.pgfault 2.752e+09 +5.6% 2.906e+09 proc-vmstat.pgfree 1.723e+08 ± 2% +14.3% 1.97e+08 ± 8% proc-vmstat.pgmigrate_fail 690793 ± 3% -13.7% 596166 ± 2% proc-vmstat.pgmigrate_success 5015265 +5.0% 5266730 proc-vmstat.thp_deferred_split_page 5019661 +5.0% 5271482 proc-vmstat.thp_fault_alloc 18284 ± 62% -79.9% 3681 ±172% sched_debug.cfs_rq:/.MIN_vruntime.avg 1901618 ± 62% -89.9% 192494 ±172% sched_debug.cfs_rq:/.MIN_vruntime.max 185571 ± 62% -85.8% 26313 ±172% sched_debug.cfs_rq:/.MIN_vruntime.stddev 15241 ± 6% -36.6% 9655 ± 6% sched_debug.cfs_rq:/.exec_clock.stddev 18284 ± 62% -79.9% 3681 ±172% sched_debug.cfs_rq:/.max_vruntime.avg 1901618 ± 62% -89.9% 192494 ±172% sched_debug.cfs_rq:/.max_vruntime.max 185571 ± 62% -85.8% 26313 ±172% sched_debug.cfs_rq:/.max_vruntime.stddev 898812 ± 7% -31.2% 618552 ± 5% sched_debug.cfs_rq:/.min_vruntime.stddev 10.30 ± 12% +34.5% 13.86 ± 6% sched_debug.cfs_rq:/.nr_spread_over.avg 34.75 ± 8% +95.9% 68.08 ± 4% sched_debug.cfs_rq:/.nr_spread_over.max 9.12 ± 11% +82.3% 16.62 ± 9% sched_debug.cfs_rq:/.nr_spread_over.stddev -1470498 -31.9% -1000709 sched_debug.cfs_rq:/.spread0.min 899820 ± 7% -31.2% 618970 ± 5% sched_debug.cfs_rq:/.spread0.stddev 1589 ± 9% -19.2% 1284 ± 9% sched_debug.cfs_rq:/.util_avg.max 0.54 ± 39% +7484.6% 41.08 ± 92% sched_debug.cfs_rq:/.util_est_enqueued.min 238.84 ± 8% -33.2% 159.61 ± 26% sched_debug.cfs_rq:/.util_est_enqueued.stddev 10787 ± 2% +13.8% 12274 sched_debug.cpu.nr_switches.avg 35242 ± 9% +32.3% 46641 ± 25% sched_debug.cpu.nr_switches.max 9139 ± 3% +16.4% 10636 sched_debug.cpu.sched_count.avg 32025 ± 10% +34.6% 43091 ± 27% sched_debug.cpu.sched_count.max 4016 ± 2% +14.7% 4606 ± 5% sched_debug.cpu.sched_count.min 2960 +38.3% 4093 sched_debug.cpu.sched_goidle.avg 11201 ± 24% +75.8% 19691 ± 26% sched_debug.cpu.sched_goidle.max 1099 ± 6% +56.9% 1725 ± 6% sched_debug.cpu.sched_goidle.min 1877 ± 10% +32.5% 2487 ± 17% sched_debug.cpu.sched_goidle.stddev 4348 ± 3% +19.3% 5188 sched_debug.cpu.ttwu_count.avg 17832 ± 11% +78.6% 31852 ± 29% sched_debug.cpu.ttwu_count.max 1699 ± 6% +28.2% 2178 ± 7% sched_debug.cpu.ttwu_count.min 1357 ± 10% -22.6% 1050 ± 4% sched_debug.cpu.ttwu_local.avg 11483 ± 5% -25.0% 8614 ± 15% sched_debug.cpu.ttwu_local.max 1979 ± 12% -36.8% 1251 ± 10% sched_debug.cpu.ttwu_local.stddev 3.941e+10 +5.0% 4.137e+10 perf-stat.i.branch-instructions 0.02 ± 50% -0.0 0.02 ± 5% perf-stat.i.branch-miss-rate% 67.94 -3.9 63.99 perf-stat.i.cache-miss-rate% 8.329e+08 -1.9% 8.17e+08 perf-stat.i.cache-misses 1.224e+09 +4.5% 1.28e+09 perf-stat.i.cache-references 6650 ± 3% +15.5% 7678 perf-stat.i.context-switches 1.64 -1.8% 1.61 perf-stat.i.cpi 2.037e+11 +2.8% 2.095e+11 perf-stat.i.cpu-cycles 257.56 -4.0% 247.13 perf-stat.i.cpu-migrations 244.94 +4.5% 255.91 perf-stat.i.cycles-between-cache-misses 1189446 ± 2% +3.2% 1227527 perf-stat.i.dTLB-load-misses 2.669e+10 +4.7% 2.794e+10 perf-stat.i.dTLB-loads 0.00 ± 7% -0.0 0.00 perf-stat.i.dTLB-store-miss-rate% 337782 +4.5% 353044 perf-stat.i.dTLB-store-misses 9.096e+09 +4.7% 9.526e+09 perf-stat.i.dTLB-stores 39.50 +2.1 41.64 perf-stat.i.iTLB-load-miss-rate% 296305 ± 2% +9.0% 323020 perf-stat.i.iTLB-load-misses 1.238e+11 +4.9% 1.299e+11 perf-stat.i.instructions 428249 ± 2% -4.4% 409553 perf-stat.i.instructions-per-iTLB-miss 0.61 +1.6% 0.62 perf-stat.i.ipc 44430 +3.8% 46121 perf-stat.i.minor-faults 54.82 +3.9 58.73 perf-stat.i.node-load-miss-rate% 68519419 ± 4% -11.7% 60479057 ± 6% perf-stat.i.node-load-misses 49879161 ± 3% -20.7% 39554915 ± 4% perf-stat.i.node-loads 44428 +3.8% 46119 perf-stat.i.page-faults 0.02 -0.0 0.01 ± 5% perf-stat.overall.branch-miss-rate% 68.03 -4.2 63.83 perf-stat.overall.cache-miss-rate% 1.65 -2.0% 1.61 perf-stat.overall.cpi 244.61 +4.8% 256.41 perf-stat.overall.cycles-between-cache-misses 30.21 +2.2 32.38 perf-stat.overall.iTLB-load-miss-rate% 417920 ± 2% -3.7% 402452 perf-stat.overall.instructions-per-iTLB-miss 0.61 +2.1% 0.62 perf-stat.overall.ipc 57.84 +2.6 60.44 perf-stat.overall.node-load-miss-rate% 3.925e+10 +5.1% 4.124e+10 perf-stat.ps.branch-instructions 8.295e+08 -1.8% 8.144e+08 perf-stat.ps.cache-misses 1.219e+09 +4.6% 1.276e+09 perf-stat.ps.cache-references 6625 ± 3% +15.4% 7648 perf-stat.ps.context-switches 2.029e+11 +2.9% 2.088e+11 perf-stat.ps.cpu-cycles 256.82 -4.2% 246.09 perf-stat.ps.cpu-migrations 1184763 ± 2% +3.3% 1223366 perf-stat.ps.dTLB-load-misses 2.658e+10 +4.8% 2.786e+10 perf-stat.ps.dTLB-loads 336658 +4.5% 351710 perf-stat.ps.dTLB-store-misses 9.059e+09 +4.8% 9.497e+09 perf-stat.ps.dTLB-stores 295140 ± 2% +9.0% 321824 perf-stat.ps.iTLB-load-misses 1.233e+11 +5.0% 1.295e+11 perf-stat.ps.instructions 44309 +3.7% 45933 perf-stat.ps.minor-faults 68208972 ± 4% -11.6% 60272675 ± 6% perf-stat.ps.node-load-misses 49689740 ± 3% -20.7% 39401789 ± 4% perf-stat.ps.node-loads 44308 +3.7% 45932 perf-stat.ps.page-faults 3.732e+13 +5.1% 3.922e+13 perf-stat.total.instructions 14949 ± 2% +14.5% 17124 ± 11% softirqs.CPU0.SCHED 9940 +37.8% 13700 ± 24% softirqs.CPU1.SCHED 9370 ± 2% +28.2% 12014 ± 16% softirqs.CPU10.SCHED 17637 ± 2% -16.5% 14733 ± 16% softirqs.CPU101.SCHED 17846 ± 3% -17.4% 14745 ± 16% softirqs.CPU103.SCHED 9552 +24.7% 11916 ± 17% softirqs.CPU11.SCHED 9210 ± 5% +27.9% 11784 ± 16% softirqs.CPU12.SCHED 9378 ± 3% +27.7% 11974 ± 16% softirqs.CPU13.SCHED 9164 ± 2% +29.4% 11856 ± 18% softirqs.CPU14.SCHED 9215 +21.2% 11170 ± 19% softirqs.CPU15.SCHED 9118 ± 2% +29.1% 11772 ± 16% softirqs.CPU16.SCHED 9413 +29.2% 12165 ± 18% softirqs.CPU17.SCHED 9309 ± 2% +29.9% 12097 ± 17% softirqs.CPU18.SCHED 9423 +26.1% 11880 ± 15% softirqs.CPU19.SCHED 9010 ± 7% +37.8% 12420 ± 18% softirqs.CPU2.SCHED 9382 ± 3% +27.0% 11916 ± 15% softirqs.CPU20.SCHED 9102 ± 4% +30.0% 11830 ± 16% softirqs.CPU21.SCHED 9543 ± 3% +23.4% 11780 ± 18% softirqs.CPU22.SCHED 8998 ± 5% +29.2% 11630 ± 18% softirqs.CPU24.SCHED 9254 ± 2% +23.9% 11462 ± 19% softirqs.CPU25.SCHED 18450 ± 4% -16.9% 15341 ± 16% softirqs.CPU26.SCHED 17551 ± 4% -14.8% 14956 ± 13% softirqs.CPU27.SCHED 17575 ± 4% -14.6% 15010 ± 14% softirqs.CPU28.SCHED 17515 ± 5% -14.2% 15021 ± 13% softirqs.CPU29.SCHED 17715 ± 2% -16.1% 14856 ± 13% softirqs.CPU30.SCHED 17754 ± 4% -16.1% 14904 ± 13% softirqs.CPU31.SCHED 17675 ± 2% -17.0% 14679 ± 21% softirqs.CPU32.SCHED 17625 ± 2% -16.0% 14813 ± 13% softirqs.CPU34.SCHED 17619 ± 2% -14.7% 15024 ± 14% softirqs.CPU35.SCHED 17887 ± 3% -17.0% 14841 ± 14% softirqs.CPU36.SCHED 17658 ± 3% -16.3% 14771 ± 12% softirqs.CPU38.SCHED 17501 ± 2% -15.3% 14816 ± 14% softirqs.CPU39.SCHED 9360 ± 2% +25.4% 11740 ± 14% softirqs.CPU4.SCHED 17699 ± 4% -16.2% 14827 ± 14% softirqs.CPU42.SCHED 17580 ± 3% -16.5% 14679 ± 15% softirqs.CPU43.SCHED 17658 ± 3% -17.1% 14644 ± 14% softirqs.CPU44.SCHED 17452 ± 4% -14.0% 15001 ± 15% softirqs.CPU46.SCHED 17599 ± 4% -17.4% 14544 ± 14% softirqs.CPU47.SCHED 17792 ± 3% -16.5% 14864 ± 14% softirqs.CPU48.SCHED 17333 ± 2% -16.7% 14445 ± 14% softirqs.CPU49.SCHED 9483 +32.3% 12547 ± 24% softirqs.CPU5.SCHED 17842 ± 3% -15.9% 14997 ± 16% softirqs.CPU51.SCHED 9051 ± 2% +23.3% 11160 ± 13% softirqs.CPU52.SCHED 9385 ± 3% +25.2% 11752 ± 16% softirqs.CPU53.SCHED 9446 ± 6% +24.9% 11798 ± 14% softirqs.CPU54.SCHED 10006 ± 6% +22.4% 12249 ± 14% softirqs.CPU55.SCHED 9657 +22.0% 11780 ± 16% softirqs.CPU57.SCHED 9399 +27.5% 11980 ± 15% softirqs.CPU58.SCHED 9234 ± 3% +27.7% 11795 ± 14% softirqs.CPU59.SCHED 9726 ± 6% +24.0% 12062 ± 16% softirqs.CPU6.SCHED 9165 ± 2% +23.7% 11342 ± 14% softirqs.CPU60.SCHED 9357 ± 2% +25.8% 11774 ± 15% softirqs.CPU61.SCHED 9406 ± 3% +25.2% 11780 ± 16% softirqs.CPU62.SCHED 9489 +23.2% 11688 ± 15% softirqs.CPU63.SCHED 9399 ± 2% +23.5% 11604 ± 16% softirqs.CPU65.SCHED 8950 ± 2% +31.6% 11774 ± 16% softirqs.CPU66.SCHED 9260 +21.7% 11267 ± 19% softirqs.CPU67.SCHED 9187 +27.1% 11672 ± 17% softirqs.CPU68.SCHED 9443 ± 2% +25.5% 11847 ± 17% softirqs.CPU69.SCHED 9144 ± 3% +28.0% 11706 ± 16% softirqs.CPU7.SCHED 9276 ± 2% +28.0% 11871 ± 17% softirqs.CPU70.SCHED 9494 +21.4% 11526 ± 14% softirqs.CPU71.SCHED 9124 ± 3% +27.8% 11657 ± 17% softirqs.CPU72.SCHED 9189 ± 3% +25.9% 11568 ± 16% softirqs.CPU73.SCHED 9392 ± 2% +23.7% 11619 ± 16% softirqs.CPU74.SCHED 17821 ± 3% -14.7% 15197 ± 17% softirqs.CPU78.SCHED 17581 ± 2% -15.7% 14827 ± 15% softirqs.CPU79.SCHED 9123 +28.2% 11695 ± 15% softirqs.CPU8.SCHED 17524 ± 2% -16.7% 14601 ± 14% softirqs.CPU80.SCHED 17644 ± 3% -16.2% 14782 ± 14% softirqs.CPU81.SCHED 17705 ± 3% -18.6% 14414 ± 22% softirqs.CPU84.SCHED 17679 ± 2% -14.1% 15185 ± 11% softirqs.CPU85.SCHED 17434 ± 3% -15.5% 14724 ± 14% softirqs.CPU86.SCHED 17409 ± 2% -15.0% 14794 ± 13% softirqs.CPU87.SCHED 17470 ± 3% -15.7% 14730 ± 13% softirqs.CPU88.SCHED 17748 ± 4% -17.1% 14721 ± 12% softirqs.CPU89.SCHED 9323 +28.0% 11929 ± 17% softirqs.CPU9.SCHED 17471 ± 2% -16.9% 14525 ± 13% softirqs.CPU90.SCHED 17900 ± 3% -17.0% 14850 ± 14% softirqs.CPU94.SCHED 17599 ± 4% -17.4% 14544 ± 15% softirqs.CPU95.SCHED 17697 ± 4% -17.7% 14569 ± 13% softirqs.CPU96.SCHED 17561 ± 3% -15.1% 14901 ± 13% softirqs.CPU97.SCHED 17404 ± 3% -16.1% 14601 ± 13% softirqs.CPU98.SCHED 17802 ± 3% -19.4% 14344 ± 15% softirqs.CPU99.SCHED 1310 ± 10% -17.0% 1088 ± 5% interrupts.CPU1.RES:Rescheduling_interrupts 3427 +13.3% 3883 ± 9% interrupts.CPU10.CAL:Function_call_interrupts 736.50 ± 20% +34.4% 989.75 ± 17% interrupts.CPU100.RES:Rescheduling_interrupts 3421 ± 3% +14.6% 3921 ± 9% interrupts.CPU101.CAL:Function_call_interrupts 4873 ± 8% +16.2% 5662 ± 7% interrupts.CPU101.NMI:Non-maskable_interrupts 4873 ± 8% +16.2% 5662 ± 7% interrupts.CPU101.PMI:Performance_monitoring_interrupts 629.50 ± 19% +83.2% 1153 ± 46% interrupts.CPU101.RES:Rescheduling_interrupts 661.75 ± 14% +25.7% 832.00 ± 13% interrupts.CPU102.RES:Rescheduling_interrupts 4695 ± 5% +15.5% 5420 ± 9% interrupts.CPU103.NMI:Non-maskable_interrupts 4695 ± 5% +15.5% 5420 ± 9% interrupts.CPU103.PMI:Performance_monitoring_interrupts 3460 +12.1% 3877 ± 9% interrupts.CPU11.CAL:Function_call_interrupts 691.50 ± 7% +41.0% 975.00 ± 32% interrupts.CPU19.RES:Rescheduling_interrupts 3413 ± 2% +13.4% 3870 ± 10% interrupts.CPU20.CAL:Function_call_interrupts 3413 ± 2% +13.4% 3871 ± 10% interrupts.CPU22.CAL:Function_call_interrupts 863.00 ± 36% +45.3% 1254 ± 24% interrupts.CPU23.RES:Rescheduling_interrupts 659.75 ± 12% +83.4% 1209 ± 20% interrupts.CPU26.RES:Rescheduling_interrupts 615.00 ± 10% +87.8% 1155 ± 14% interrupts.CPU27.RES:Rescheduling_interrupts 663.75 ± 5% +67.9% 1114 ± 7% interrupts.CPU28.RES:Rescheduling_interrupts 3421 ± 4% +13.4% 3879 ± 9% interrupts.CPU29.CAL:Function_call_interrupts 805.25 ± 16% +33.0% 1071 ± 15% interrupts.CPU29.RES:Rescheduling_interrupts 3482 ± 3% +11.0% 3864 ± 8% interrupts.CPU3.CAL:Function_call_interrupts 819.75 ± 19% +48.4% 1216 ± 12% interrupts.CPU30.RES:Rescheduling_interrupts 777.25 ± 8% +31.6% 1023 ± 6% interrupts.CPU31.RES:Rescheduling_interrupts 844.50 ± 25% +41.7% 1196 ± 20% interrupts.CPU32.RES:Rescheduling_interrupts 722.75 ± 14% +94.2% 1403 ± 26% interrupts.CPU33.RES:Rescheduling_interrupts 3944 ± 25% +36.8% 5394 ± 9% interrupts.CPU34.NMI:Non-maskable_interrupts 3944 ± 25% +36.8% 5394 ± 9% interrupts.CPU34.PMI:Performance_monitoring_interrupts 781.75 ± 9% +45.3% 1136 ± 27% interrupts.CPU34.RES:Rescheduling_interrupts 735.50 ± 9% +33.3% 980.75 ± 4% interrupts.CPU35.RES:Rescheduling_interrupts 691.75 ± 10% +41.6% 979.50 ± 13% interrupts.CPU36.RES:Rescheduling_interrupts 727.00 ± 16% +47.7% 1074 ± 15% interrupts.CPU37.RES:Rescheduling_interrupts 4413 ± 7% +24.9% 5511 ± 9% interrupts.CPU38.NMI:Non-maskable_interrupts 4413 ± 7% +24.9% 5511 ± 9% interrupts.CPU38.PMI:Performance_monitoring_interrupts 708.75 ± 25% +62.6% 1152 ± 22% interrupts.CPU38.RES:Rescheduling_interrupts 666.50 ± 7% +57.8% 1052 ± 13% interrupts.CPU39.RES:Rescheduling_interrupts 765.75 ± 11% +25.2% 958.75 ± 14% interrupts.CPU4.RES:Rescheduling_interrupts 3395 ± 2% +15.1% 3908 ± 10% interrupts.CPU40.CAL:Function_call_interrupts 770.00 ± 16% +45.3% 1119 ± 18% interrupts.CPU40.RES:Rescheduling_interrupts 740.50 ± 26% +61.9% 1198 ± 19% interrupts.CPU41.RES:Rescheduling_interrupts 3459 ± 2% +12.9% 3905 ± 11% interrupts.CPU42.CAL:Function_call_interrupts 4530 ± 5% +22.8% 5564 ± 9% interrupts.CPU42.NMI:Non-maskable_interrupts 4530 ± 5% +22.8% 5564 ± 9% interrupts.CPU42.PMI:Performance_monitoring_interrupts 3330 ± 25% +60.0% 5328 ± 10% interrupts.CPU44.NMI:Non-maskable_interrupts 3330 ± 25% +60.0% 5328 ± 10% interrupts.CPU44.PMI:Performance_monitoring_interrupts 686.25 ± 9% +48.4% 1018 ± 10% interrupts.CPU44.RES:Rescheduling_interrupts 702.00 ± 15% +38.6% 973.25 ± 5% interrupts.CPU45.RES:Rescheduling_interrupts 4742 ± 7% +19.3% 5657 ± 8% interrupts.CPU46.NMI:Non-maskable_interrupts 4742 ± 7% +19.3% 5657 ± 8% interrupts.CPU46.PMI:Performance_monitoring_interrupts 732.75 ± 6% +51.9% 1113 ± 7% interrupts.CPU46.RES:Rescheduling_interrupts 775.50 ± 17% +41.3% 1095 ± 6% interrupts.CPU47.RES:Rescheduling_interrupts 670.75 ± 5% +60.7% 1078 ± 6% interrupts.CPU48.RES:Rescheduling_interrupts 4870 ± 8% +16.5% 5676 ± 7% interrupts.CPU49.NMI:Non-maskable_interrupts 4870 ± 8% +16.5% 5676 ± 7% interrupts.CPU49.PMI:Performance_monitoring_interrupts 694.75 ± 12% +25.8% 874.00 ± 11% interrupts.CPU49.RES:Rescheduling_interrupts 686.00 ± 9% +52.0% 1042 ± 20% interrupts.CPU50.RES:Rescheduling_interrupts 3361 +17.2% 3938 ± 9% interrupts.CPU51.CAL:Function_call_interrupts 4707 ± 6% +16.0% 5463 ± 8% interrupts.CPU51.NMI:Non-maskable_interrupts 4707 ± 6% +16.0% 5463 ± 8% interrupts.CPU51.PMI:Performance_monitoring_interrupts 638.75 ± 12% +28.6% 821.25 ± 15% interrupts.CPU54.RES:Rescheduling_interrupts 677.50 ± 8% +51.8% 1028 ± 29% interrupts.CPU58.RES:Rescheduling_interrupts 3465 ± 2% +12.0% 3880 ± 9% interrupts.CPU6.CAL:Function_call_interrupts 641.25 ± 2% +26.1% 808.75 ± 10% interrupts.CPU60.RES:Rescheduling_interrupts 599.75 ± 2% +45.6% 873.50 ± 8% interrupts.CPU62.RES:Rescheduling_interrupts 661.50 ± 9% +52.4% 1008 ± 27% interrupts.CPU63.RES:Rescheduling_interrupts 611.00 ± 12% +31.1% 801.00 ± 13% interrupts.CPU69.RES:Rescheduling_interrupts 3507 ± 2% +10.8% 3888 ± 9% interrupts.CPU7.CAL:Function_call_interrupts 664.00 ± 5% +32.3% 878.50 ± 23% interrupts.CPU70.RES:Rescheduling_interrupts 5780 ± 9% -38.8% 3540 ± 37% interrupts.CPU73.NMI:Non-maskable_interrupts 5780 ± 9% -38.8% 3540 ± 37% interrupts.CPU73.PMI:Performance_monitoring_interrupts 5787 ± 9% -26.7% 4243 ± 28% interrupts.CPU76.NMI:Non-maskable_interrupts 5787 ± 9% -26.7% 4243 ± 28% interrupts.CPU76.PMI:Performance_monitoring_interrupts 751.50 ± 15% +88.0% 1413 ± 37% interrupts.CPU78.RES:Rescheduling_interrupts 725.50 ± 12% +82.9% 1327 ± 36% interrupts.CPU79.RES:Rescheduling_interrupts 714.00 ± 18% +33.2% 951.00 ± 15% interrupts.CPU80.RES:Rescheduling_interrupts 706.25 ± 19% +55.6% 1098 ± 27% interrupts.CPU82.RES:Rescheduling_interrupts 4524 ± 6% +19.6% 5409 ± 8% interrupts.CPU83.NMI:Non-maskable_interrupts 4524 ± 6% +19.6% 5409 ± 8% interrupts.CPU83.PMI:Performance_monitoring_interrupts 666.75 ± 15% +37.3% 915.50 ± 4% interrupts.CPU83.RES:Rescheduling_interrupts 782.50 ± 26% +57.6% 1233 ± 21% interrupts.CPU84.RES:Rescheduling_interrupts 622.75 ± 12% +77.8% 1107 ± 17% interrupts.CPU85.RES:Rescheduling_interrupts 3465 ± 3% +13.5% 3933 ± 9% interrupts.CPU86.CAL:Function_call_interrupts 714.75 ± 14% +47.0% 1050 ± 10% interrupts.CPU86.RES:Rescheduling_interrupts 3519 ± 2% +11.7% 3929 ± 9% interrupts.CPU87.CAL:Function_call_interrupts 582.75 ± 10% +54.2% 898.75 ± 11% interrupts.CPU87.RES:Rescheduling_interrupts 713.00 ± 10% +36.6% 974.25 ± 11% interrupts.CPU88.RES:Rescheduling_interrupts 690.50 ± 13% +53.0% 1056 ± 13% interrupts.CPU89.RES:Rescheduling_interrupts 3477 +11.0% 3860 ± 8% interrupts.CPU9.CAL:Function_call_interrupts 684.50 ± 14% +39.7% 956.25 ± 11% interrupts.CPU90.RES:Rescheduling_interrupts 3946 ± 21% +39.8% 5516 ± 10% interrupts.CPU91.NMI:Non-maskable_interrupts 3946 ± 21% +39.8% 5516 ± 10% interrupts.CPU91.PMI:Performance_monitoring_interrupts 649.00 ± 13% +54.3% 1001 ± 6% interrupts.CPU91.RES:Rescheduling_interrupts 674.25 ± 21% +39.5% 940.25 ± 11% interrupts.CPU92.RES:Rescheduling_interrupts 3971 ± 26% +41.2% 5606 ± 8% interrupts.CPU94.NMI:Non-maskable_interrupts 3971 ± 26% +41.2% 5606 ± 8% interrupts.CPU94.PMI:Performance_monitoring_interrupts 4129 ± 22% +33.2% 5499 ± 9% interrupts.CPU95.NMI:Non-maskable_interrupts 4129 ± 22% +33.2% 5499 ± 9% interrupts.CPU95.PMI:Performance_monitoring_interrupts 685.75 ± 14% +38.0% 946.50 ± 9% interrupts.CPU96.RES:Rescheduling_interrupts 4630 ± 11% +18.3% 5477 ± 8% interrupts.CPU97.NMI:Non-maskable_interrupts 4630 ± 11% +18.3% 5477 ± 8% interrupts.CPU97.PMI:Performance_monitoring_interrupts 4835 ± 9% +16.3% 5622 ± 9% interrupts.CPU98.NMI:Non-maskable_interrupts 4835 ± 9% +16.3% 5622 ± 9% interrupts.CPU98.PMI:Performance_monitoring_interrupts 596.25 ± 11% +81.8% 1083 ± 9% interrupts.CPU98.RES:Rescheduling_interrupts 674.75 ± 17% +43.7% 969.50 ± 5% interrupts.CPU99.RES:Rescheduling_interrupts 78.25 ± 13% +21.4% 95.00 ± 10% interrupts.IWI:IRQ_work_interrupts 85705 ± 6% +26.0% 107990 ± 6% interrupts.RES:Rescheduling_interrupts vm-scalability.throughput 4.55e+07 +-+--------------------------------------------------------------+ | O | 4.5e+07 +-+ O O O O O O O | O O O O O O | | O O O O | 4.45e+07 +-+ O | | | 4.4e+07 +-+ .+.| | .+.+ | 4.35e+07 +-+ +. .+. +. .+. .+. + | |.+.+. : + +. + + +.+..+.+ + + +.+ +. + | | +. : +.+ + + + + + + + | 4.3e+07 +-+ + + + + | | | 4.25e+07 +-+--------------------------------------------------------------+ vm-scalability.time.user_time 13000 +-+-----------------------------------------------------------------+ O O O | 12800 +-+ | | O O | | O O O O O O O O | 12600 +-O O O O O | | O | 12400 +-+ | | | 12200 +-+ | | +.. | | + .+. +.+.+. .+. .+.+.+. .+.+.| 12000 +-+.+ +.+. .+ +.+.+..+.+.+ : +. + +.+.+.. + | | + + : + | 11800 +-+-----------------------------------------------------------------+ vm-scalability.time.percent_of_cpu_this_job_got 8050 O-+-------------------O----------------------------------------------+ | O O O O O O | 8000 +-O O O O O O O O O | | O O | 7950 +-+ | | | 7900 +-+ | | | 7850 +-+ | | + | 7800 +-+ +..+.+ :: + +. .+ +. | |. + : : : + : + : +. .+. .+..+ : .+. + +.| 7750 +-+.+ : : :.. + : +. : + + : .+ +..+ | | +.+ + + +.+..+ + | 7700 +-+------------------------------------------------------------------+ vm-scalability.time.involuntary_context_switches 190000 +-+----------------------------------------------------------------+ | +. + +.+ .+.| 180000 +-+ : +. + + + +. .+ .. + .+ | | .+. : +.+ +.+.+ .+. : : : + : + + | | + +. .+ + .+ +. : : : : + | 170000 +-++ +. +. + + + | | + | 160000 +-+ | | | 150000 +-+ | | O O O O O O O | | O O O | 140000 O-+ O O O O O O O | | O | 130000 +-+----------------------------------------------------------------+ vm-scalability.median 430000 +-+----------O---------O---O---------------------------------------+ O O O O O O | 425000 +-O O O O O | | O O O O O | | | 420000 +-+ | | + | 415000 +-+ :: + .+ | | : : + : + .+.+ +| 410000 +-+ .+ : : .+ : + + .+..+. .+.+. .+ | |.+.+ +: + +. .+ +.+ + +. .+. .+ +..+ | | + + + + + + | 405000 +-+ + | | | 400000 +-+----------------------------------------------------------------+ vm-scalability.workload 1.23e+10 +-+---O----------------------------------------------------------+ 1.22e+10 +-+ | O O O O O O O O | 1.21e+10 +-O O O O O O O O O O | 1.2e+10 +-+ | | | 1.19e+10 +-+ | 1.18e+10 +-+ | 1.17e+10 +-+ | | | 1.16e+10 +-+ | 1.15e+10 +-+ + + +.+ +.+ +.+ + +.+.+ +.+.| | + + + + + + + + .. + + + + + + | 1.14e+10 +-+.+ + + +.+.+ +.+ +.+ + +.+.+.+.+ | 1.13e+10 +-+--------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample *************************************************************************************************** lkp-bdw-ep6: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory ========================================================================================= class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime/ucode: interrupt/gcc-7/performance/1HDD/x86_64-rhel-7.6/100%/debian-x86_64-2019-09-23.cgz/lkp-bdw-ep6/stress-ng/30s/0xb000038 commit: fcf0553db6 ("sched/fair: Remove meaningless imbalance calculation") 0b0695f2b3 ("sched/fair: Rework load_balance()") fcf0553db6f4c793 0b0695f2b34a4afa3f6e9aa1ff0 ---------------- --------------------------- %stddev %change %stddev \ | \ 98318389 +43.0% 1.406e+08 stress-ng.schedpolicy.ops 3277346 +43.0% 4685146 stress-ng.schedpolicy.ops_per_sec 3.506e+08 ± 4% -10.3% 3.146e+08 ± 3% stress-ng.sigq.ops 11684738 ± 4% -10.3% 10485353 ± 3% stress-ng.sigq.ops_per_sec 3.628e+08 ± 6% -19.4% 2.925e+08 ± 6% stress-ng.time.involuntary_context_switches 29456 +2.8% 30285 stress-ng.time.system_time 7636655 ± 9% +46.6% 11197377 ± 27% cpuidle.C1E.usage 1111483 ± 3% -9.5% 1005829 vmstat.system.cs 22638222 ± 4% +16.5% 26370816 ± 11% meminfo.Committed_AS 28908 ± 6% +24.6% 36020 ± 16% meminfo.KernelStack 7636543 ± 9% +46.6% 11196090 ± 27% turbostat.C1E 3.46 ± 16% -61.2% 1.35 ± 7% turbostat.Pkg%pc2 217.54 +1.7% 221.33 turbostat.PkgWatt 13.34 ± 2% +5.8% 14.11 turbostat.RAMWatt 525.50 ± 8% -15.7% 443.00 ± 12% slabinfo.biovec-128.active_objs 525.50 ± 8% -15.7% 443.00 ± 12% slabinfo.biovec-128.num_objs 28089 ± 12% -33.0% 18833 ± 22% slabinfo.pool_workqueue.active_objs 877.25 ± 12% -32.6% 591.00 ± 21% slabinfo.pool_workqueue.active_slabs 28089 ± 12% -32.6% 18925 ± 21% slabinfo.pool_workqueue.num_objs 877.25 ± 12% -32.6% 591.00 ± 21% slabinfo.pool_workqueue.num_slabs 846.75 ± 6% -18.0% 694.75 ± 9% slabinfo.skbuff_fclone_cache.active_objs 846.75 ± 6% -18.0% 694.75 ± 9% slabinfo.skbuff_fclone_cache.num_objs 63348 ± 6% -20.7% 50261 ± 4% softirqs.CPU14.SCHED 44394 ± 4% +21.4% 53880 ± 8% softirqs.CPU42.SCHED 52246 ± 7% -15.1% 44352 softirqs.CPU47.SCHED 58350 ± 4% -11.0% 51914 ± 7% softirqs.CPU6.SCHED 58009 ± 7% -23.8% 44206 ± 4% softirqs.CPU63.SCHED 49166 ± 6% +23.4% 60683 ± 9% softirqs.CPU68.SCHED 44594 ± 7% +14.3% 50951 ± 8% softirqs.CPU78.SCHED 46407 ± 9% +19.6% 55515 ± 8% softirqs.CPU84.SCHED 55555 ± 8% -15.5% 46933 ± 4% softirqs.CPU9.SCHED 198757 ± 18% +44.1% 286316 ± 9% numa-meminfo.node0.Active 189280 ± 19% +37.1% 259422 ± 7% numa-meminfo.node0.Active(anon) 110438 ± 33% +68.3% 185869 ± 16% numa-meminfo.node0.AnonHugePages 143458 ± 28% +67.7% 240547 ± 13% numa-meminfo.node0.AnonPages 12438 ± 16% +61.9% 20134 ± 37% numa-meminfo.node0.KernelStack 1004379 ± 7% +16.4% 1168764 ± 4% numa-meminfo.node0.MemUsed 357111 ± 24% -41.6% 208655 ± 29% numa-meminfo.node1.Active 330094 ± 22% -39.6% 199339 ± 32% numa-meminfo.node1.Active(anon) 265924 ± 25% -52.2% 127138 ± 46% numa-meminfo.node1.AnonHugePages 314059 ± 22% -49.6% 158305 ± 36% numa-meminfo.node1.AnonPages 15386 ± 16% -25.1% 11525 ± 15% numa-meminfo.node1.KernelStack 1200805 ± 11% -18.6% 977595 ± 7% numa-meminfo.node1.MemUsed 965.50 ± 15% -29.3% 682.25 ± 43% numa-meminfo.node1.Mlocked 46762 ± 18% +37.8% 64452 ± 8% numa-vmstat.node0.nr_active_anon 35393 ± 27% +68.9% 59793 ± 12% numa-vmstat.node0.nr_anon_pages 52.75 ± 33% +71.1% 90.25 ± 15% numa-vmstat.node0.nr_anon_transparent_hugepages 15.00 ± 96% +598.3% 104.75 ± 15% numa-vmstat.node0.nr_inactive_file 11555 ± 22% +68.9% 19513 ± 41% numa-vmstat.node0.nr_kernel_stack 550.25 ±162% +207.5% 1691 ± 48% numa-vmstat.node0.nr_written 46762 ± 18% +37.8% 64452 ± 8% numa-vmstat.node0.nr_zone_active_anon 15.00 ± 96% +598.3% 104.75 ± 15% numa-vmstat.node0.nr_zone_inactive_file 82094 ± 22% -39.5% 49641 ± 32% numa-vmstat.node1.nr_active_anon 78146 ± 23% -49.5% 39455 ± 37% numa-vmstat.node1.nr_anon_pages 129.00 ± 25% -52.3% 61.50 ± 47% numa-vmstat.node1.nr_anon_transparent_hugepages 107.75 ± 12% -85.4% 15.75 ±103% numa-vmstat.node1.nr_inactive_file 14322 ± 11% -21.1% 11304 ± 11% numa-vmstat.node1.nr_kernel_stack 241.00 ± 15% -29.5% 170.00 ± 43% numa-vmstat.node1.nr_mlock 82094 ± 22% -39.5% 49641 ± 32% numa-vmstat.node1.nr_zone_active_anon 107.75 ± 12% -85.4% 15.75 ±103% numa-vmstat.node1.nr_zone_inactive_file 0.81 ± 5% +0.2 0.99 ± 10% perf-profile.calltrace.cycles-pp.task_rq_lock.task_sched_runtime.cpu_clock_sample.posix_cpu_timer_get.do_timer_gettime 0.60 ± 11% +0.2 0.83 ± 9% perf-profile.calltrace.cycles-pp.___might_sleep.__might_fault._copy_to_user.put_itimerspec64.__x64_sys_timer_gettime 1.73 ± 9% +0.3 2.05 ± 8% perf-profile.calltrace.cycles-pp.__might_fault._copy_to_user.put_itimerspec64.__x64_sys_timer_gettime.do_syscall_64 3.92 ± 5% +0.6 4.49 ± 7% perf-profile.calltrace.cycles-pp.task_sched_runtime.cpu_clock_sample.posix_cpu_timer_get.do_timer_gettime.__x64_sys_timer_gettime 4.17 ± 4% +0.6 4.78 ± 7% perf-profile.calltrace.cycles-pp.cpu_clock_sample.posix_cpu_timer_get.do_timer_gettime.__x64_sys_timer_gettime.do_syscall_64 5.72 ± 3% +0.7 6.43 ± 7% perf-profile.calltrace.cycles-pp.posix_cpu_timer_get.do_timer_gettime.__x64_sys_timer_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.24 ± 54% -0.2 0.07 ±131% perf-profile.children.cycles-pp.ext4_inode_csum_set 0.45 ± 3% +0.1 0.56 ± 4% perf-profile.children.cycles-pp.__might_sleep 0.84 ± 5% +0.2 1.03 ± 9% perf-profile.children.cycles-pp.task_rq_lock 0.66 ± 8% +0.2 0.88 ± 7% perf-profile.children.cycles-pp.___might_sleep 1.83 ± 9% +0.3 2.16 ± 8% perf-profile.children.cycles-pp.__might_fault 4.04 ± 5% +0.6 4.62 ± 7% perf-profile.children.cycles-pp.task_sched_runtime 4.24 ± 4% +0.6 4.87 ± 7% perf-profile.children.cycles-pp.cpu_clock_sample 5.77 ± 3% +0.7 6.48 ± 7% perf-profile.children.cycles-pp.posix_cpu_timer_get 0.22 ± 11% +0.1 0.28 ± 15% perf-profile.self.cycles-pp.cpu_clock_sample 0.47 ± 7% +0.1 0.55 ± 5% perf-profile.self.cycles-pp.update_curr 0.28 ± 5% +0.1 0.38 ± 14% perf-profile.self.cycles-pp.task_rq_lock 0.42 ± 3% +0.1 0.53 ± 4% perf-profile.self.cycles-pp.__might_sleep 0.50 ± 5% +0.1 0.61 ± 11% perf-profile.self.cycles-pp.task_sched_runtime 0.63 ± 9% +0.2 0.85 ± 7% perf-profile.self.cycles-pp.___might_sleep 9180611 ± 5% +40.1% 12859327 ± 14% sched_debug.cfs_rq:/.MIN_vruntime.max 1479571 ± 6% +57.6% 2331469 ± 14% sched_debug.cfs_rq:/.MIN_vruntime.stddev 7951 ± 6% -52.5% 3773 ± 17% sched_debug.cfs_rq:/.exec_clock.stddev 321306 ± 39% -44.2% 179273 sched_debug.cfs_rq:/.load.max 9180613 ± 5% +40.1% 12859327 ± 14% sched_debug.cfs_rq:/.max_vruntime.max 1479571 ± 6% +57.6% 2331469 ± 14% sched_debug.cfs_rq:/.max_vruntime.stddev 16622378 +20.0% 19940069 ± 7% sched_debug.cfs_rq:/.min_vruntime.avg 18123901 +19.7% 21686545 ± 6% sched_debug.cfs_rq:/.min_vruntime.max 14338218 ± 3% +27.4% 18267927 ± 7% sched_debug.cfs_rq:/.min_vruntime.min 0.17 ± 16% +23.4% 0.21 ± 11% sched_debug.cfs_rq:/.nr_running.stddev 319990 ± 39% -44.6% 177347 sched_debug.cfs_rq:/.runnable_weight.max -2067420 -33.5% -1375445 sched_debug.cfs_rq:/.spread0.min 1033 ± 8% -13.7% 891.85 ± 3% sched_debug.cfs_rq:/.util_est_enqueued.max 93676 ± 16% -29.0% 66471 ± 17% sched_debug.cpu.avg_idle.min 10391 ± 52% +118.9% 22750 ± 15% sched_debug.cpu.curr->pid.avg 14393 ± 35% +113.2% 30689 ± 17% sched_debug.cpu.curr->pid.max 3041 ± 38% +161.8% 7963 ± 11% sched_debug.cpu.curr->pid.stddev 3.38 ± 6% -16.3% 2.83 ± 5% sched_debug.cpu.nr_running.max 2412687 ± 4% -16.0% 2027251 ± 3% sched_debug.cpu.nr_switches.avg 4038819 ± 3% -20.2% 3223112 ± 5% sched_debug.cpu.nr_switches.max 834203 ± 17% -37.8% 518798 ± 27% sched_debug.cpu.nr_switches.stddev 45.85 ± 13% +41.2% 64.75 ± 18% sched_debug.cpu.nr_uninterruptible.max 1937209 ± 2% +58.5% 3070891 ± 3% sched_debug.cpu.sched_count.min 1074023 ± 13% -57.9% 451958 ± 12% sched_debug.cpu.sched_count.stddev 1283769 ± 7% +65.1% 2118907 ± 7% sched_debug.cpu.yld_count.min 714244 ± 5% -51.9% 343373 ± 22% sched_debug.cpu.yld_count.stddev 12.54 ± 9% -18.8% 10.18 ± 15% perf-stat.i.MPKI 1.011e+10 +2.6% 1.038e+10 perf-stat.i.branch-instructions 13.22 ± 5% +2.5 15.75 ± 3% perf-stat.i.cache-miss-rate% 21084021 ± 6% +33.9% 28231058 ± 6% perf-stat.i.cache-misses 1143861 ± 5% -12.1% 1005721 ± 6% perf-stat.i.context-switches 1.984e+11 +1.8% 2.02e+11 perf-stat.i.cpu-cycles 1.525e+10 +1.3% 1.544e+10 perf-stat.i.dTLB-loads 65.46 -2.7 62.76 ± 3% perf-stat.i.iTLB-load-miss-rate% 20360883 ± 4% +10.5% 22500874 ± 4% perf-stat.i.iTLB-loads 4.963e+10 +2.0% 5.062e+10 perf-stat.i.instructions 181557 -2.4% 177113 perf-stat.i.msec 5350122 ± 8% +26.5% 6765332 ± 7% perf-stat.i.node-load-misses 4264320 ± 3% +24.8% 5321600 ± 4% perf-stat.i.node-store-misses 6.12 ± 5% +1.5 7.60 ± 2% perf-stat.overall.cache-miss-rate% 7646 ± 6% -17.7% 6295 ± 3% perf-stat.overall.cycles-between-cache-misses 69.29 -1.1 68.22 perf-stat.overall.iTLB-load-miss-rate% 61.11 ± 2% +6.6 67.71 ± 5% perf-stat.overall.node-load-miss-rate% 74.82 +1.8 76.58 perf-stat.overall.node-store-miss-rate% 1.044e+10 +1.8% 1.063e+10 perf-stat.ps.branch-instructions 26325951 ± 6% +22.9% 32366684 ± 2% perf-stat.ps.cache-misses 1115530 ± 3% -9.5% 1009780 perf-stat.ps.context-switches 1.536e+10 +1.0% 1.552e+10 perf-stat.ps.dTLB-loads 44718416 ± 2% +5.8% 47308605 ± 3% perf-stat.ps.iTLB-load-misses 19831973 ± 4% +11.1% 22040029 ± 4% perf-stat.ps.iTLB-loads 5.064e+10 +1.4% 5.137e+10 perf-stat.ps.instructions 5454694 ± 9% +26.4% 6892365 ± 6% perf-stat.ps.node-load-misses 4263688 ± 4% +24.9% 5325279 ± 4% perf-stat.ps.node-store-misses 3.001e+13 +1.7% 3.052e+13 perf-stat.total.instructions 18550 -74.9% 4650 ±173% interrupts.76:IR-PCI-MSI.512000-edge.ahci[0000:00:1f.2] 7642 ± 9% -20.4% 6086 ± 2% interrupts.CPU0.CAL:Function_call_interrupts 4376 ± 22% -75.4% 1077 ± 41% interrupts.CPU0.TLB:TLB_shootdowns 8402 ± 5% -19.0% 6806 interrupts.CPU1.CAL:Function_call_interrupts 4559 ± 20% -73.7% 1199 ± 15% interrupts.CPU1.TLB:TLB_shootdowns 8423 ± 4% -20.2% 6725 ± 2% interrupts.CPU10.CAL:Function_call_interrupts 4536 ± 14% -75.0% 1135 ± 20% interrupts.CPU10.TLB:TLB_shootdowns 8303 ± 3% -18.2% 6795 ± 2% interrupts.CPU11.CAL:Function_call_interrupts 4404 ± 11% -71.6% 1250 ± 35% interrupts.CPU11.TLB:TLB_shootdowns 8491 ± 6% -21.3% 6683 interrupts.CPU12.CAL:Function_call_interrupts 4723 ± 20% -77.2% 1077 ± 17% interrupts.CPU12.TLB:TLB_shootdowns 8403 ± 5% -20.3% 6700 ± 2% interrupts.CPU13.CAL:Function_call_interrupts 4557 ± 19% -74.2% 1175 ± 22% interrupts.CPU13.TLB:TLB_shootdowns 8459 ± 4% -18.6% 6884 interrupts.CPU14.CAL:Function_call_interrupts 4559 ± 18% -69.8% 1376 ± 13% interrupts.CPU14.TLB:TLB_shootdowns 8305 ± 7% -17.7% 6833 ± 2% interrupts.CPU15.CAL:Function_call_interrupts 4261 ± 25% -67.6% 1382 ± 24% interrupts.CPU15.TLB:TLB_shootdowns 8277 ± 5% -19.1% 6696 ± 3% interrupts.CPU16.CAL:Function_call_interrupts 4214 ± 22% -69.6% 1282 ± 8% interrupts.CPU16.TLB:TLB_shootdowns 8258 ± 5% -18.9% 6694 ± 3% interrupts.CPU17.CAL:Function_call_interrupts 4461 ± 19% -74.1% 1155 ± 21% interrupts.CPU17.TLB:TLB_shootdowns 8457 ± 6% -20.6% 6717 interrupts.CPU18.CAL:Function_call_interrupts 4889 ± 34% +60.0% 7822 interrupts.CPU18.NMI:Non-maskable_interrupts 4889 ± 34% +60.0% 7822 interrupts.CPU18.PMI:Performance_monitoring_interrupts 4731 ± 22% -77.2% 1078 ± 10% interrupts.CPU18.TLB:TLB_shootdowns 8160 ± 5% -18.1% 6684 interrupts.CPU19.CAL:Function_call_interrupts 4311 ± 20% -74.2% 1114 ± 13% interrupts.CPU19.TLB:TLB_shootdowns 8464 ± 2% -18.2% 6927 ± 3% interrupts.CPU2.CAL:Function_call_interrupts 4938 ± 14% -70.5% 1457 ± 18% interrupts.CPU2.TLB:TLB_shootdowns 8358 ± 6% -19.7% 6715 ± 3% interrupts.CPU20.CAL:Function_call_interrupts 4567 ± 24% -74.6% 1160 ± 35% interrupts.CPU20.TLB:TLB_shootdowns 8460 ± 4% -22.3% 6577 ± 2% interrupts.CPU21.CAL:Function_call_interrupts 4514 ± 18% -76.0% 1084 ± 22% interrupts.CPU21.TLB:TLB_shootdowns 6677 ± 6% +19.6% 7988 ± 9% interrupts.CPU22.CAL:Function_call_interrupts 1288 ± 14% +209.1% 3983 ± 35% interrupts.CPU22.TLB:TLB_shootdowns 6751 ± 2% +24.0% 8370 ± 9% interrupts.CPU23.CAL:Function_call_interrupts 1037 ± 29% +323.0% 4388 ± 36% interrupts.CPU23.TLB:TLB_shootdowns 6844 +20.6% 8251 ± 9% interrupts.CPU24.CAL:Function_call_interrupts 1205 ± 17% +229.2% 3967 ± 40% interrupts.CPU24.TLB:TLB_shootdowns 6880 +21.9% 8389 ± 7% interrupts.CPU25.CAL:Function_call_interrupts 1228 ± 19% +245.2% 4240 ± 35% interrupts.CPU25.TLB:TLB_shootdowns 6494 ± 8% +25.1% 8123 ± 9% interrupts.CPU26.CAL:Function_call_interrupts 1141 ± 13% +262.5% 4139 ± 32% interrupts.CPU26.TLB:TLB_shootdowns 6852 +19.2% 8166 ± 7% interrupts.CPU27.CAL:Function_call_interrupts 1298 ± 8% +197.1% 3857 ± 31% interrupts.CPU27.TLB:TLB_shootdowns 6563 ± 6% +25.2% 8214 ± 8% interrupts.CPU28.CAL:Function_call_interrupts 1176 ± 8% +237.1% 3964 ± 33% interrupts.CPU28.TLB:TLB_shootdowns 6842 ± 2% +21.4% 8308 ± 8% interrupts.CPU29.CAL:Function_call_interrupts 1271 ± 11% +223.8% 4118 ± 33% interrupts.CPU29.TLB:TLB_shootdowns 8418 ± 3% -21.1% 6643 ± 2% interrupts.CPU3.CAL:Function_call_interrupts 4677 ± 11% -75.1% 1164 ± 16% interrupts.CPU3.TLB:TLB_shootdowns 6798 ± 3% +21.8% 8284 ± 7% interrupts.CPU30.CAL:Function_call_interrupts 1219 ± 12% +236.3% 4102 ± 30% interrupts.CPU30.TLB:TLB_shootdowns 6503 ± 4% +25.9% 8186 ± 6% interrupts.CPU31.CAL:Function_call_interrupts 1046 ± 15% +289.1% 4072 ± 32% interrupts.CPU31.TLB:TLB_shootdowns 6949 ± 3% +17.2% 8141 ± 8% interrupts.CPU32.CAL:Function_call_interrupts 1241 ± 23% +210.6% 3854 ± 34% interrupts.CPU32.TLB:TLB_shootdowns 1487 ± 26% +161.6% 3889 ± 46% interrupts.CPU33.TLB:TLB_shootdowns 1710 ± 44% +140.1% 4105 ± 36% interrupts.CPU34.TLB:TLB_shootdowns 6957 ± 2% +15.2% 8012 ± 9% interrupts.CPU35.CAL:Function_call_interrupts 1165 ± 8% +223.1% 3765 ± 38% interrupts.CPU35.TLB:TLB_shootdowns 1423 ± 24% +173.4% 3892 ± 33% interrupts.CPU36.TLB:TLB_shootdowns 1279 ± 29% +224.2% 4148 ± 39% interrupts.CPU37.TLB:TLB_shootdowns 1301 ± 20% +226.1% 4244 ± 35% interrupts.CPU38.TLB:TLB_shootdowns 6906 ± 2% +18.5% 8181 ± 8% interrupts.CPU39.CAL:Function_call_interrupts 368828 ± 20% +96.2% 723710 ± 7% interrupts.CPU39.RES:Rescheduling_interrupts 1438 ± 12% +174.8% 3951 ± 33% interrupts.CPU39.TLB:TLB_shootdowns 8399 ± 5% -19.2% 6788 ± 2% interrupts.CPU4.CAL:Function_call_interrupts 4567 ± 18% -72.7% 1245 ± 28% interrupts.CPU4.TLB:TLB_shootdowns 6895 +22.4% 8439 ± 9% interrupts.CPU40.CAL:Function_call_interrupts 1233 ± 11% +247.1% 4280 ± 36% interrupts.CPU40.TLB:TLB_shootdowns 6819 ± 2% +21.3% 8274 ± 9% interrupts.CPU41.CAL:Function_call_interrupts 1260 ± 14% +207.1% 3871 ± 38% interrupts.CPU41.TLB:TLB_shootdowns 1301 ± 9% +204.7% 3963 ± 36% interrupts.CPU42.TLB:TLB_shootdowns 6721 ± 3% +22.3% 8221 ± 7% interrupts.CPU43.CAL:Function_call_interrupts 1237 ± 19% +224.8% 4017 ± 35% interrupts.CPU43.TLB:TLB_shootdowns 8422 ± 8% -22.7% 6506 ± 5% interrupts.CPU44.CAL:Function_call_interrupts 15261375 ± 7% -7.8% 14064176 interrupts.CPU44.LOC:Local_timer_interrupts 4376 ± 25% -75.7% 1063 ± 26% interrupts.CPU44.TLB:TLB_shootdowns 8451 ± 5% -23.7% 6448 ± 6% interrupts.CPU45.CAL:Function_call_interrupts 4351 ± 18% -74.9% 1094 ± 12% interrupts.CPU45.TLB:TLB_shootdowns 8705 ± 6% -21.2% 6860 ± 2% interrupts.CPU46.CAL:Function_call_interrupts 4787 ± 20% -69.5% 1462 ± 16% interrupts.CPU46.TLB:TLB_shootdowns 8334 ± 3% -18.9% 6763 interrupts.CPU47.CAL:Function_call_interrupts 4126 ± 10% -71.3% 1186 ± 18% interrupts.CPU47.TLB:TLB_shootdowns 8578 ± 4% -21.7% 6713 interrupts.CPU48.CAL:Function_call_interrupts 4520 ± 15% -74.5% 1154 ± 23% interrupts.CPU48.TLB:TLB_shootdowns 8450 ± 8% -18.8% 6863 ± 3% interrupts.CPU49.CAL:Function_call_interrupts 4494 ± 24% -66.5% 1505 ± 22% interrupts.CPU49.TLB:TLB_shootdowns 8307 ± 4% -18.0% 6816 ± 2% interrupts.CPU5.CAL:Function_call_interrupts 7845 -37.4% 4908 ± 34% interrupts.CPU5.NMI:Non-maskable_interrupts 7845 -37.4% 4908 ± 34% interrupts.CPU5.PMI:Performance_monitoring_interrupts 4429 ± 17% -69.8% 1339 ± 20% interrupts.CPU5.TLB:TLB_shootdowns 8444 ± 4% -21.7% 6613 interrupts.CPU50.CAL:Function_call_interrupts 4282 ± 16% -76.0% 1029 ± 17% interrupts.CPU50.TLB:TLB_shootdowns 8750 ± 6% -22.2% 6803 interrupts.CPU51.CAL:Function_call_interrupts 4755 ± 20% -73.1% 1277 ± 15% interrupts.CPU51.TLB:TLB_shootdowns 8478 ± 6% -20.2% 6766 ± 2% interrupts.CPU52.CAL:Function_call_interrupts 4337 ± 20% -72.6% 1190 ± 22% interrupts.CPU52.TLB:TLB_shootdowns 8604 ± 7% -21.5% 6750 ± 4% interrupts.CPU53.CAL:Function_call_interrupts 4649 ± 17% -74.3% 1193 ± 23% interrupts.CPU53.TLB:TLB_shootdowns 8317 ± 9% -19.4% 6706 ± 3% interrupts.CPU54.CAL:Function_call_interrupts 4372 ± 12% -75.4% 1076 ± 29% interrupts.CPU54.TLB:TLB_shootdowns 8439 ± 3% -18.5% 6876 interrupts.CPU55.CAL:Function_call_interrupts 4415 ± 11% -71.6% 1254 ± 17% interrupts.CPU55.TLB:TLB_shootdowns 8869 ± 6% -22.6% 6864 ± 2% interrupts.CPU56.CAL:Function_call_interrupts 517594 ± 13% +123.3% 1155539 ± 25% interrupts.CPU56.RES:Rescheduling_interrupts 5085 ± 22% -74.9% 1278 ± 17% interrupts.CPU56.TLB:TLB_shootdowns 8682 ± 4% -21.7% 6796 ± 2% interrupts.CPU57.CAL:Function_call_interrupts 4808 ± 19% -74.1% 1243 ± 13% interrupts.CPU57.TLB:TLB_shootdowns 8626 ± 7% -21.8% 6746 ± 2% interrupts.CPU58.CAL:Function_call_interrupts 4816 ± 20% -79.1% 1007 ± 28% interrupts.CPU58.TLB:TLB_shootdowns 8759 ± 8% -20.3% 6984 interrupts.CPU59.CAL:Function_call_interrupts 4840 ± 22% -70.6% 1423 ± 14% interrupts.CPU59.TLB:TLB_shootdowns 8167 ± 6% -19.0% 6615 ± 2% interrupts.CPU6.CAL:Function_call_interrupts 4129 ± 21% -75.4% 1017 ± 24% interrupts.CPU6.TLB:TLB_shootdowns 8910 ± 4% -23.7% 6794 ± 3% interrupts.CPU60.CAL:Function_call_interrupts 5017 ± 12% -77.8% 1113 ± 15% interrupts.CPU60.TLB:TLB_shootdowns 8689 ± 5% -21.6% 6808 interrupts.CPU61.CAL:Function_call_interrupts 4715 ± 20% -77.6% 1055 ± 19% interrupts.CPU61.TLB:TLB_shootdowns 8574 ± 4% -18.9% 6953 ± 2% interrupts.CPU62.CAL:Function_call_interrupts 4494 ± 17% -72.3% 1244 ± 7% interrupts.CPU62.TLB:TLB_shootdowns 8865 ± 3% -25.4% 6614 ± 7% interrupts.CPU63.CAL:Function_call_interrupts 4870 ± 12% -76.8% 1130 ± 12% interrupts.CPU63.TLB:TLB_shootdowns 8724 ± 7% -20.2% 6958 ± 3% interrupts.CPU64.CAL:Function_call_interrupts 4736 ± 16% -72.6% 1295 ± 7% interrupts.CPU64.TLB:TLB_shootdowns 8717 ± 6% -23.7% 6653 ± 4% interrupts.CPU65.CAL:Function_call_interrupts 4626 ± 19% -76.5% 1087 ± 21% interrupts.CPU65.TLB:TLB_shootdowns 6671 +24.7% 8318 ± 9% interrupts.CPU66.CAL:Function_call_interrupts 1091 ± 8% +249.8% 3819 ± 32% interrupts.CPU66.TLB:TLB_shootdowns 6795 ± 2% +26.9% 8624 ± 9% interrupts.CPU67.CAL:Function_call_interrupts 1098 ± 24% +299.5% 4388 ± 39% interrupts.CPU67.TLB:TLB_shootdowns 6704 ± 5% +25.8% 8431 ± 8% interrupts.CPU68.CAL:Function_call_interrupts 1214 ± 15% +236.1% 4083 ± 36% interrupts.CPU68.TLB:TLB_shootdowns 1049 ± 15% +326.2% 4473 ± 33% interrupts.CPU69.TLB:TLB_shootdowns 8554 ± 6% -19.6% 6874 ± 2% interrupts.CPU7.CAL:Function_call_interrupts 4753 ± 19% -71.7% 1344 ± 16% interrupts.CPU7.TLB:TLB_shootdowns 1298 ± 13% +227.4% 4249 ± 38% interrupts.CPU70.TLB:TLB_shootdowns 6976 +19.9% 8362 ± 7% interrupts.CPU71.CAL:Function_call_interrupts 1232748 ± 18% -57.3% 525824 ± 33% interrupts.CPU71.RES:Rescheduling_interrupts 1253 ± 9% +211.8% 3909 ± 31% interrupts.CPU71.TLB:TLB_shootdowns 1316 ± 22% +188.7% 3800 ± 33% interrupts.CPU72.TLB:TLB_shootdowns 6665 ± 5% +26.5% 8429 ± 8% interrupts.CPU73.CAL:Function_call_interrupts 1202 ± 13% +234.1% 4017 ± 37% interrupts.CPU73.TLB:TLB_shootdowns 6639 ± 5% +27.0% 8434 ± 8% interrupts.CPU74.CAL:Function_call_interrupts 1079 ± 16% +269.4% 3986 ± 36% interrupts.CPU74.TLB:TLB_shootdowns 1055 ± 12% +301.2% 4235 ± 34% interrupts.CPU75.TLB:TLB_shootdowns 7011 ± 3% +21.6% 8522 ± 8% interrupts.CPU76.CAL:Function_call_interrupts 1223 ± 13% +230.7% 4047 ± 35% interrupts.CPU76.TLB:TLB_shootdowns 6886 ± 7% +25.6% 8652 ± 10% interrupts.CPU77.CAL:Function_call_interrupts 1316 ± 16% +229.8% 4339 ± 36% interrupts.CPU77.TLB:TLB_shootdowns 7343 ± 5% +19.1% 8743 ± 9% interrupts.CPU78.CAL:Function_call_interrupts 1699 ± 37% +144.4% 4152 ± 31% interrupts.CPU78.TLB:TLB_shootdowns 7136 ± 4% +21.4% 8666 ± 9% interrupts.CPU79.CAL:Function_call_interrupts 1094 ± 13% +276.2% 4118 ± 34% interrupts.CPU79.TLB:TLB_shootdowns 8531 ± 5% -19.5% 6869 ± 2% interrupts.CPU8.CAL:Function_call_interrupts 4764 ± 16% -71.0% 1382 ± 14% interrupts.CPU8.TLB:TLB_shootdowns 1387 ± 29% +181.8% 3910 ± 38% interrupts.CPU80.TLB:TLB_shootdowns 1114 ± 30% +259.7% 4007 ± 36% interrupts.CPU81.TLB:TLB_shootdowns 7012 +23.9% 8685 ± 8% interrupts.CPU82.CAL:Function_call_interrupts 1274 ± 12% +255.4% 4530 ± 27% interrupts.CPU82.TLB:TLB_shootdowns 6971 ± 3% +23.8% 8628 ± 9% interrupts.CPU83.CAL:Function_call_interrupts 1156 ± 18% +260.1% 4162 ± 34% interrupts.CPU83.TLB:TLB_shootdowns 7030 ± 4% +21.0% 8504 ± 8% interrupts.CPU84.CAL:Function_call_interrupts 1286 ± 23% +224.0% 4166 ± 31% interrupts.CPU84.TLB:TLB_shootdowns 7059 +22.4% 8644 ± 11% interrupts.CPU85.CAL:Function_call_interrupts 1421 ± 22% +208.8% 4388 ± 33% interrupts.CPU85.TLB:TLB_shootdowns 7018 ± 2% +22.8% 8615 ± 9% interrupts.CPU86.CAL:Function_call_interrupts 1258 ± 8% +231.1% 4167 ± 34% interrupts.CPU86.TLB:TLB_shootdowns 1338 ± 3% +217.9% 4255 ± 31% interrupts.CPU87.TLB:TLB_shootdowns 8376 ± 4% -19.0% 6787 ± 2% interrupts.CPU9.CAL:Function_call_interrupts 4466 ± 17% -71.2% 1286 ± 18% interrupts.CPU9.TLB:TLB_shootdowns Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 2 months

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[sched] 2802bafd8f: will-it-scale.per_thread_ops 2.0% improvement

by kernel test robot

Greeting, FYI, we noticed a 2.0% improvement of will-it-scale.per_thread_ops due to commit: commit: 2802bafd8f4b449471c2276f2f7a18eb17766d68 ("sched: Optimize pick_next_task()") https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git sched/core in testcase: will-it-scale on test machine: 104 threads Skylake with 192G memory with following parameters: nr_task: 100% mode: thread test: sched_yield cpufreq_governor: performance ucode: 0x2000064 test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two. test-url: https://github.com/antonblanchard/will-it-scale In addition to that, the commit also has significant impact on the following tests: Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-rhel-7.6/thread/100%/debian-x86_64-2019-09-23.cgz/lkp-skl-fpga01/sched_yield/will-it-scale/0x2000064 commit: 8629787388 ("sched/fair: Fix pick_next_task_fair() slow path") 2802bafd8f ("sched: Optimize pick_next_task()") 8629787388c77c01 2802bafd8f4b449471c2276f2f7 ---------------- --------------------------- %stddev %change %stddev \ | \ 1121358 +2.0% 1144146 will-it-scale.per_thread_ops 1.166e+08 +2.0% 1.19e+08 will-it-scale.workload 4728 ± 4% -10.6% 4226 ± 6% slabinfo.eventpoll_pwq.active_objs 4728 ± 4% -10.6% 4226 ± 6% slabinfo.eventpoll_pwq.num_objs 4088 ± 4% +6.8% 4368 ± 4% slabinfo.skbuff_head_cache.num_objs 4.25 ± 25% +8523.5% 366.50 ±170% interrupts.CPU13.RES:Rescheduling_interrupts 1488 ± 97% -97.7% 34.75 ± 87% interrupts.CPU52.RES:Rescheduling_interrupts 23.00 ±108% +1737.0% 422.50 ±147% interrupts.CPU61.RES:Rescheduling_interrupts 10.25 ± 89% +3724.4% 392.00 ±160% interrupts.CPU72.RES:Rescheduling_interrupts 34590 ± 4% +16.0% 40113 ± 12% softirqs.CPU17.RCU 29850 ± 7% +16.6% 34795 ± 15% softirqs.CPU26.RCU 32834 ± 2% +12.5% 36942 ± 11% softirqs.CPU59.RCU 30388 ± 2% +15.5% 35088 ± 13% softirqs.CPU69.RCU 28450 ± 6% +16.7% 33189 ± 13% softirqs.CPU7.RCU 31881 ± 4% +18.4% 37741 ± 13% softirqs.CPU84.RCU 0.00 +2.8e+09% 28.00 ± 18% sched_debug.cfs_rq:/.MIN_vruntime.avg 0.00 +2.4e+11% 2428 ± 25% sched_debug.cfs_rq:/.MIN_vruntime.max 0.00 +1.4e+25% 259.04 ± 22% sched_debug.cfs_rq:/.MIN_vruntime.stddev 22810 ± 5% +573.5% 153632 ± 92% sched_debug.cfs_rq:/.load.max 2145 ± 9% +659.3% 16290 ± 93% sched_debug.cfs_rq:/.load.stddev 0.00 +2.8e+09% 28.00 ± 18% sched_debug.cfs_rq:/.max_vruntime.avg 0.00 +2.4e+11% 2428 ± 25% sched_debug.cfs_rq:/.max_vruntime.max 0.00 +1.4e+25% 259.04 ± 22% sched_debug.cfs_rq:/.max_vruntime.stddev 553.67 ± 8% +34.0% 741.77 ± 14% sched_debug.cfs_rq:/.util_est_enqueued.avg 30374 ± 40% +86.5% 56651 ± 15% numa-vmstat.node0.nr_active_anon 28090 ± 41% +90.5% 53524 ± 7% numa-vmstat.node0.nr_anon_pages 2775 ± 31% +81.1% 5024 ± 19% numa-vmstat.node0.nr_inactive_anon 588.50 ± 18% +44.6% 851.25 ± 14% numa-vmstat.node0.nr_page_table_pages 30374 ± 40% +86.5% 56651 ± 15% numa-vmstat.node0.nr_zone_active_anon 2775 ± 31% +81.1% 5024 ± 19% numa-vmstat.node0.nr_zone_inactive_anon 59807 ± 21% -44.3% 33333 ± 26% numa-vmstat.node1.nr_active_anon 50347 ± 23% -50.8% 24791 ± 15% numa-vmstat.node1.nr_anon_pages 4226 ± 20% -53.6% 1962 ± 51% numa-vmstat.node1.nr_inactive_anon 747.75 ± 14% -35.1% 485.50 ± 24% numa-vmstat.node1.nr_page_table_pages 59807 ± 21% -44.3% 33333 ± 26% numa-vmstat.node1.nr_zone_active_anon 4226 ± 20% -53.6% 1962 ± 51% numa-vmstat.node1.nr_zone_inactive_anon 121684 ± 40% +86.3% 226672 ± 15% numa-meminfo.node0.Active 121544 ± 40% +86.4% 226576 ± 15% numa-meminfo.node0.Active(anon) 66420 ± 58% +122.1% 147493 ± 7% numa-meminfo.node0.AnonHugePages 112439 ± 42% +90.4% 214081 ± 7% numa-meminfo.node0.AnonPages 11302 ± 29% +79.4% 20281 ± 19% numa-meminfo.node0.Inactive 11102 ± 30% +81.0% 20097 ± 19% numa-meminfo.node0.Inactive(anon) 14296 ± 19% +26.0% 18013 ± 10% numa-meminfo.node0.Mapped 2355 ± 18% +44.6% 3405 ± 14% numa-meminfo.node0.PageTables 239300 ± 21% -44.3% 133379 ± 26% numa-meminfo.node1.Active 239256 ± 21% -44.3% 133295 ± 26% numa-meminfo.node1.Active(anon) 142814 ± 27% -56.6% 61957 ± 18% numa-meminfo.node1.AnonHugePages 201352 ± 23% -50.7% 99169 ± 16% numa-meminfo.node1.AnonPages 16931 ± 18% -52.4% 8067 ± 51% numa-meminfo.node1.Inactive 16782 ± 19% -53.0% 7888 ± 51% numa-meminfo.node1.Inactive(anon) 1123002 ± 4% -10.3% 1007152 ± 5% numa-meminfo.node1.MemUsed 2991 ± 14% -35.0% 1945 ± 24% numa-meminfo.node1.PageTables 1.52 -0.5 1.03 perf-stat.i.branch-miss-rate% 3.529e+08 -31.5% 2.417e+08 perf-stat.i.branch-misses 2.57 -1.2% 2.54 perf-stat.i.cpi 1.166e+08 +2.0% 1.189e+08 perf-stat.i.dTLB-load-misses 3.438e+10 +1.6% 3.494e+10 perf-stat.i.dTLB-loads 69.72 +13.8 83.55 ± 4% perf-stat.i.iTLB-load-miss-rate% 1.167e+08 +11.7% 1.303e+08 perf-stat.i.iTLB-load-misses 52564786 ± 2% -45.0% 28903742 ± 27% perf-stat.i.iTLB-loads 1.116e+11 +1.5% 1.132e+11 perf-stat.i.instructions 956.44 -9.0% 870.82 perf-stat.i.instructions-per-iTLB-miss 0.39 +1.3% 0.39 perf-stat.i.ipc 94.33 -1.0 93.31 perf-stat.i.node-store-miss-rate% 1.52 -0.5 1.03 perf-stat.overall.branch-miss-rate% 2.57 -1.2% 2.54 perf-stat.overall.cpi 68.94 +13.1 82.07 ± 4% perf-stat.overall.iTLB-load-miss-rate% 956.38 -9.1% 869.22 perf-stat.overall.instructions-per-iTLB-miss 0.39 +1.3% 0.39 perf-stat.overall.ipc 3.518e+08 -31.5% 2.409e+08 perf-stat.ps.branch-misses 1.162e+08 +2.0% 1.185e+08 perf-stat.ps.dTLB-load-misses 3.426e+10 +1.6% 3.482e+10 perf-stat.ps.dTLB-loads 1.163e+08 +11.7% 1.299e+08 perf-stat.ps.iTLB-load-misses 52389145 ± 2% -45.0% 28807970 ± 27% perf-stat.ps.iTLB-loads 1.112e+11 +1.5% 1.128e+11 perf-stat.ps.instructions 3.357e+13 +1.5% 3.406e+13 perf-stat.total.instructions 7.97 -3.1 4.87 perf-profile.calltrace.cycles-pp.do_sched_yield.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.__sched_yield 38.18 -2.5 35.67 perf-profile.calltrace.cycles-pp.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.__sched_yield 3.28 -1.9 1.38 perf-profile.calltrace.cycles-pp.yield_task_fair.do_sched_yield.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe 28.01 -1.4 26.62 perf-profile.calltrace.cycles-pp.__schedule.schedule.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe 28.71 -1.4 27.33 perf-profile.calltrace.cycles-pp.schedule.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.__sched_yield 20.20 -1.3 18.90 perf-profile.calltrace.cycles-pp.pick_next_task_fair.__schedule.schedule.__x64_sys_sched_yield.do_syscall_64 61.90 -1.2 60.72 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__sched_yield 2.31 ± 4% -1.1 1.19 perf-profile.calltrace.cycles-pp._raw_spin_lock.do_sched_yield.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe 63.36 -1.0 62.41 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__sched_yield 1.35 ± 2% -0.2 1.17 ± 2% perf-profile.calltrace.cycles-pp.clear_buddies.pick_next_entity.pick_next_task_fair.__schedule.schedule 2.91 -0.1 2.80 perf-profile.calltrace.cycles-pp.__calc_delta.update_curr.pick_next_task_fair.__schedule.schedule 1.86 +0.0 1.88 perf-profile.calltrace.cycles-pp.native_sched_clock.sched_clock.sched_clock_cpu.update_rq_clock.__schedule 2.07 +0.0 2.09 perf-profile.calltrace.cycles-pp.sched_clock_cpu.update_rq_clock.__schedule.schedule.__x64_sys_sched_yield 1.39 +0.1 1.46 perf-profile.calltrace.cycles-pp.update_min_vruntime.update_curr.pick_next_task_fair.__schedule.schedule 3.16 ± 2% +0.2 3.33 ± 2% perf-profile.calltrace.cycles-pp.pick_next_entity.pick_next_task_fair.__schedule.schedule.__x64_sys_sched_yield 18.63 +0.9 19.52 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.__sched_yield 8.14 -3.2 4.89 perf-profile.children.cycles-pp.do_sched_yield 38.36 -2.5 35.87 perf-profile.children.cycles-pp.__x64_sys_sched_yield 3.29 -1.9 1.40 perf-profile.children.cycles-pp.yield_task_fair 28.72 -1.4 27.34 perf-profile.children.cycles-pp.schedule 28.20 -1.4 26.83 perf-profile.children.cycles-pp.__schedule 20.57 -1.3 19.31 perf-profile.children.cycles-pp.pick_next_task_fair 3.52 ± 3% -1.2 2.37 perf-profile.children.cycles-pp._raw_spin_lock 62.08 -0.9 61.15 perf-profile.children.cycles-pp.do_syscall_64 63.45 -0.9 62.52 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 1.10 -0.2 0.87 ± 2% perf-profile.children.cycles-pp.__x86_indirect_thunk_rax 1.41 ± 2% -0.1 1.29 ± 2% perf-profile.children.cycles-pp.clear_buddies 3.14 -0.1 3.03 perf-profile.children.cycles-pp.__calc_delta 0.41 ± 2% -0.1 0.35 ± 2% perf-profile.children.cycles-pp.rcu_note_context_switch 99.52 -0.0 99.50 perf-profile.children.cycles-pp.__sched_yield 0.40 ± 2% +0.0 0.43 perf-profile.children.cycles-pp.__list_add_valid 0.77 ± 2% +0.0 0.82 ± 2% perf-profile.children.cycles-pp.testcase 1.49 +0.1 1.57 perf-profile.children.cycles-pp.update_min_vruntime 0.29 ± 4% +0.1 0.40 ± 3% perf-profile.children.cycles-pp.check_cfs_rq_runtime 17.47 +0.3 17.75 perf-profile.children.cycles-pp.syscall_return_via_sysret 16.89 +0.8 17.73 perf-profile.children.cycles-pp.entry_SYSCALL_64 3.15 -1.9 1.29 perf-profile.self.cycles-pp.yield_task_fair 4.83 -1.3 3.56 perf-profile.self.cycles-pp.pick_next_task_fair 3.44 ± 3% -1.1 2.30 perf-profile.self.cycles-pp._raw_spin_lock 0.86 -0.3 0.55 ± 2% perf-profile.self.cycles-pp.__x86_indirect_thunk_rax 2.36 ± 3% -0.2 2.12 perf-profile.self.cycles-pp.do_sched_yield 3.07 -0.1 2.96 perf-profile.self.cycles-pp.__calc_delta 1.14 ± 2% -0.1 1.06 ± 2% perf-profile.self.cycles-pp.clear_buddies 0.28 ± 2% -0.1 0.23 ± 3% perf-profile.self.cycles-pp.rcu_note_context_switch 0.30 +0.0 0.33 perf-profile.self.cycles-pp.__raw_spin_unlock_irq 0.39 +0.0 0.41 perf-profile.self.cycles-pp.__list_add_valid 1.33 +0.0 1.38 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.21 ± 5% +0.1 0.30 ± 3% perf-profile.self.cycles-pp.check_cfs_rq_runtime 1.40 +0.1 1.49 perf-profile.self.cycles-pp.update_min_vruntime 4.17 +0.1 4.31 perf-profile.self.cycles-pp.update_curr 2.22 ± 2% +0.2 2.38 ± 2% perf-profile.self.cycles-pp.pick_next_entity 17.44 +0.3 17.73 perf-profile.self.cycles-pp.syscall_return_via_sysret 15.10 +0.8 15.89 perf-profile.self.cycles-pp.entry_SYSCALL_64 23.08 +1.5 24.62 perf-profile.self.cycles-pp.do_syscall_64 1.52 ± 3% +2.1 3.58 perf-profile.self.cycles-pp.__x64_sys_sched_yield will-it-scale.per_thread_ops 1.155e+06 +-+-------------------------------------------------------------+ | | 1.15e+06 +-O O O O | O O | 1.145e+06 +-+ O O O O O O O O | | O O O | 1.14e+06 +-+ O O | | | 1.135e+06 +-+ | | | 1.13e+06 +-+ | |.+.+.+..+ .+. .+ .+.+.+.+.+. .+ | 1.125e+06 +-+ + .+ +. .+ + .+.+. +.+ + | | + +.+.+..+ +.+ + .+. .| 1.12e+06 +-+-------------------------------------------------------------+ will-it-scale.workload 1.2e+08 +-+-------------------------------------------------------------+ | O O | 1.195e+08 O-+ O O | | O | 1.19e+08 +-+ O O O O O O O O O O O | | | 1.185e+08 +-+ O O | | | 1.18e+08 +-+ | | | 1.175e+08 +-+ | |.+.+.+..+ .+. .+ .+.+.+.+.+. .+ | 1.17e+08 +-+ + .+ +. .+ + .+.+. +.+ + | | + +.+.+..+ +.+ + .+. .| 1.165e+08 +-+-------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample *************************************************************************************************** lkp-cfl-e1: 16 threads Intel(R) Xeon(R) E-2278G CPU @ 3.40GHz with 32G memory ========================================================================================= compiler/cpufreq_governor/ipc/kconfig/mode/nr_threads/rootfs/tbox_group/testcase/ucode: gcc-7/performance/pipe/x86_64-rhel-7.6/process/100%/debian-x86_64-2019-09-23.cgz/lkp-cfl-e1/hackbench/0xb8 commit: 8629787388 ("sched/fair: Fix pick_next_task_fair() slow path") 2802bafd8f ("sched: Optimize pick_next_task()") 8629787388c77c01 2802bafd8f4b449471c2276f2f7 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | 2:2 -100% :4 dmesg.WARNING:at#for_ip_interrupt_entry/0x %stddev %change %stddev \ | \ 319243 +1.0% 322577 vmstat.system.in 44734 ± 67% -97.1% 1299 ± 35% interrupts.133:IR-PCI-MSI.2097154-edge.eth1-TxRx-1 44734 ± 67% -97.1% 1299 ± 35% interrupts.CPU1.133:IR-PCI-MSI.2097154-edge.eth1-TxRx-1 1.015e+08 -2.3% 99090799 proc-vmstat.numa_hit 1.015e+08 -2.3% 99090799 proc-vmstat.numa_local 1.016e+08 -2.4% 99233446 proc-vmstat.pgalloc_normal 1.016e+08 -2.4% 99212634 proc-vmstat.pgfree 4661 +25.8% 5865 ± 15% sched_debug.cfs_rq:/.runnable_weight.min 15464 ± 66% -298.6% -30718 sched_debug.cfs_rq:/.spread0.avg -24756 +182.0% -69800 sched_debug.cfs_rq:/.spread0.min 184.62 ± 3% -12.9% 160.72 ± 3% sched_debug.cfs_rq:/.util_avg.stddev 128525 ± 25% -26.0% 95064 sched_debug.cpu.avg_idle.max 41958 ± 20% -46.0% 22660 ± 13% sched_debug.cpu.avg_idle.stddev 0.82 +38.9% 1.14 ± 6% sched_debug.cpu.nr_running.min 1859930 -65.9% 634915 ± 2% cpuidle.C1E.time 16778 -47.2% 8858 cpuidle.C1E.usage 526113 ± 2% +214.4% 1653841 ± 12% cpuidle.C3.time 2677 ± 4% +170.2% 7233 ± 6% cpuidle.C3.usage 19880613 +98.2% 39413282 ± 42% cpuidle.C6.time 26687 +221.8% 85874 ± 41% cpuidle.C6.usage 9751983 -42.2% 5639021 ± 7% cpuidle.C8.time 10643 -39.5% 6435 ± 7% cpuidle.C8.usage 23713 ± 69% -96.8% 756.75 ± 34% softirqs.CPU1.NET_RX 88898 ± 24% -26.5% 65346 ± 3% softirqs.CPU1.RCU 91011 ± 26% -28.9% 64686 softirqs.CPU13.RCU 90901 ± 27% -29.5% 64076 ± 2% softirqs.CPU14.RCU 89193 ± 27% -27.6% 64601 ± 2% softirqs.CPU2.RCU 90478 ± 26% -28.5% 64684 softirqs.CPU5.RCU 91912 ± 25% -29.8% 64548 ± 2% softirqs.CPU6.RCU 90295 ± 25% -27.2% 65713 softirqs.CPU9.RCU 25645 ± 62% -71.6% 7288 ± 38% softirqs.NET_RX 1441859 ± 27% -27.9% 1040000 softirqs.RCU 16685 -47.6% 8747 turbostat.C1E 0.02 -0.0 0.01 turbostat.C1E% 2604 ± 4% +175.0% 7161 ± 6% turbostat.C3 26241 +225.0% 85284 ± 41% turbostat.C6 0.20 +0.2 0.40 ± 43% turbostat.C6% 10506 -40.9% 6209 ± 8% turbostat.C8 0.10 -0.0 0.05 ± 9% turbostat.C8% 0.01 +100.0% 0.02 turbostat.CPU%c3 0.15 +76.7% 0.26 ± 37% turbostat.CPU%c6 0.06 -62.5% 0.02 ± 36% turbostat.CPU%c7 45.92 +1.7% 46.70 perf-stat.i.MPKI 97193839 -1.5% 95703183 perf-stat.i.branch-misses 0.98 -0.0 0.96 perf-stat.i.cache-miss-rate% 19893530 -1.9% 19511719 perf-stat.i.cache-misses 78.80 -0.9 77.91 perf-stat.i.iTLB-load-miss-rate% 51185994 -4.1% 49062994 perf-stat.i.iTLB-load-misses 904.82 +4.0% 940.91 perf-stat.i.instructions-per-iTLB-miss 1239044 -2.0% 1214362 perf-stat.i.node-loads 1032724 -3.0% 1001536 perf-stat.i.node-stores 45.07 +1.5% 45.73 perf-stat.overall.MPKI 1.08 -0.0 1.07 perf-stat.overall.branch-miss-rate% 0.95 -0.0 0.93 perf-stat.overall.cache-miss-rate% 3116 +1.9% 3176 perf-stat.overall.cycles-between-cache-misses 78.91 -0.9 78.06 perf-stat.overall.iTLB-load-miss-rate% 903.47 +3.9% 938.56 perf-stat.overall.instructions-per-iTLB-miss 97034122 -1.5% 95545924 perf-stat.ps.branch-misses 19860860 -1.9% 19479750 perf-stat.ps.cache-misses 51101833 -4.1% 48982450 perf-stat.ps.iTLB-load-misses 1237005 -2.0% 1212368 perf-stat.ps.node-loads 1031069 -3.0% 999913 perf-stat.ps.node-stores 35.95 -14.8 21.14 ± 71% perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 34.48 -14.2 20.29 ± 71% perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.81 ± 3% -1.0 0.85 ±100% perf-profile.calltrace.cycles-pp.__fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.91 -0.5 0.44 ±100% perf-profile.calltrace.cycles-pp.__fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.79 -0.2 2.56 ± 5% perf-profile.calltrace.cycles-pp.mutex_lock.pipe_write.new_sync_write.vfs_write.ksys_write 1.70 ± 2% -0.2 1.47 ± 15% perf-profile.calltrace.cycles-pp.__fget_light.__fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.69 ± 5% -0.2 0.48 ± 57% perf-profile.calltrace.cycles-pp.update_load_avg.enqueue_task_fair.activate_task.ttwu_do_activate.try_to_wake_up 2.49 ± 2% -0.2 2.29 ± 8% perf-profile.calltrace.cycles-pp.mutex_unlock.pipe_write.new_sync_write.vfs_write.ksys_write 0.89 -0.1 0.77 ± 14% perf-profile.calltrace.cycles-pp.__inode_security_revalidate.selinux_file_permission.security_file_permission.vfs_write.ksys_write 1.42 -0.1 1.33 ± 4% perf-profile.calltrace.cycles-pp.pick_next_task_fair.__schedule.schedule.pipe_wait.pipe_read 2.21 -0.1 2.16 perf-profile.calltrace.cycles-pp.copy_user_enhanced_fast_string.copyout.copy_page_to_iter.pipe_read.new_sync_read 35.98 -0.5 35.52 perf-profile.children.cycles-pp.ksys_read 34.58 -0.5 34.12 perf-profile.children.cycles-pp.vfs_read 4.95 -0.3 4.68 ± 2% perf-profile.children.cycles-pp.mutex_lock 3.48 -0.2 3.26 ± 4% perf-profile.children.cycles-pp.mutex_unlock 2.81 -0.1 2.66 perf-profile.children.cycles-pp.__fdget_pos 2.53 -0.1 2.40 perf-profile.children.cycles-pp.__fget_light 1.03 -0.1 0.94 ± 8% perf-profile.children.cycles-pp.__mutex_unlock_slowpath 1.83 ± 2% -0.1 1.75 ± 4% perf-profile.children.cycles-pp.__might_sleep 0.23 ± 8% -0.0 0.18 ± 13% perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64 0.42 ± 3% -0.0 0.38 ± 3% perf-profile.children.cycles-pp.sched_clock 0.45 ± 3% -0.0 0.41 ± 3% perf-profile.children.cycles-pp.sched_clock_cpu 0.52 -0.0 0.49 ± 3% perf-profile.children.cycles-pp.inode_has_perm 0.40 ± 3% -0.0 0.37 ± 4% perf-profile.children.cycles-pp.native_sched_clock 0.15 ± 6% -0.0 0.12 ± 6% perf-profile.children.cycles-pp.bpf_fd_pass 0.22 ± 4% -0.0 0.20 ± 4% perf-profile.children.cycles-pp.wake_q_add 0.17 ± 2% -0.0 0.15 ± 9% perf-profile.children.cycles-pp.rb_next 0.29 -0.0 0.27 ± 5% perf-profile.children.cycles-pp.iov_iter_init 0.11 ± 4% -0.0 0.10 ± 7% perf-profile.children.cycles-pp.finish_wait 0.18 +0.0 0.20 ± 4% perf-profile.children.cycles-pp.rb_erase 0.12 ± 4% +0.0 0.15 ± 5% perf-profile.children.cycles-pp.resched_curr 0.45 +0.0 0.48 ± 3% perf-profile.children.cycles-pp.pick_next_entity 0.72 +0.0 0.77 ± 2% perf-profile.children.cycles-pp.__switch_to_asm 0.60 +0.1 0.66 perf-profile.children.cycles-pp.check_preempt_wakeup 0.82 ± 3% +0.1 0.89 ± 2% perf-profile.children.cycles-pp.check_preempt_curr 0.91 ± 2% +0.1 0.97 ± 2% perf-profile.children.cycles-pp.ttwu_do_wakeup 3.32 +0.1 3.46 perf-profile.children.cycles-pp.select_task_rq_fair 3.05 -0.2 2.80 ± 4% perf-profile.self.cycles-pp.mutex_lock 3.41 -0.2 3.19 ± 5% perf-profile.self.cycles-pp.mutex_unlock 2.44 -0.1 2.33 perf-profile.self.cycles-pp.__fget_light 0.57 ± 4% -0.1 0.50 perf-profile.self.cycles-pp.pick_next_task_fair 1.09 ± 2% -0.1 1.02 ± 2% perf-profile.self.cycles-pp.vfs_read 0.80 -0.1 0.73 ± 3% perf-profile.self.cycles-pp.copy_page_from_iter 0.45 ± 2% -0.1 0.39 ± 5% perf-profile.self.cycles-pp.ksys_write 1.27 -0.1 1.21 ± 3% perf-profile.self.cycles-pp.do_syscall_64 0.62 ± 3% -0.0 0.58 ± 4% perf-profile.self.cycles-pp.__inode_security_revalidate 0.19 ± 10% -0.0 0.15 ± 16% perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64 0.39 ± 3% -0.0 0.35 ± 3% perf-profile.self.cycles-pp.native_sched_clock 0.17 ± 2% -0.0 0.14 ± 10% perf-profile.self.cycles-pp.rb_next 0.45 -0.0 0.42 ± 2% perf-profile.self.cycles-pp.inode_has_perm 0.21 ± 2% -0.0 0.18 ± 2% perf-profile.self.cycles-pp.set_next_entity 0.21 ± 4% -0.0 0.19 ± 5% perf-profile.self.cycles-pp.wake_q_add 0.05 +0.0 0.06 ± 6% perf-profile.self.cycles-pp.exit_to_usermode_loop 0.06 +0.0 0.08 ± 8% perf-profile.self.cycles-pp.wakeup_preempt_entity 0.12 ± 4% +0.0 0.15 ± 5% perf-profile.self.cycles-pp.resched_curr 0.72 +0.0 0.77 ± 2% perf-profile.self.cycles-pp.__switch_to_asm 0.55 ± 2% +0.1 0.61 ± 4% perf-profile.self.cycles-pp.select_task_rq_fair Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 2 months

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[pipe] d60337eff1: phoronix-test-suite.noise-level.0.activity_level 144.0% improvement

by lkp report check

Greeting, FYI, we noticed a 144.0% improvement of phoronix-test-suite.noise-level.0.activity_level due to commit: commit: d60337eff18a3c587832ab8053a567f1da9710d2 ("[RFC PATCH 04/11] pipe: Use head and tail pointers for the ring, not cursor and length [ver #3]") url: https://github.com/0day-ci/linux/commits/David-Howells/pipe-Notification-... in testcase: phoronix-test-suite on test machine: 16 threads Intel(R) Xeon(R) CPU X5570 @ 2.93GHz with 48G memory with following parameters: test: noise-level-1.1.0 cpufreq_governor: performance ucode: 0x1d test-description: The Phoronix Test Suite is the most comprehensive testing and benchmarking platform available that provides an extensible framework for which new tests can be easily added. test-url: http://www.phoronix-test-suite.com/ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-rhel-7.6/debian-x86_64-phoronix/lkp-nhm-2ep1/noise-level-1.1.0/phoronix-test-suite/0x1d commit: 77a98a59a1 ("Add wake_up_interruptible_sync_poll_locked() [ver #3]") d60337eff1 ("pipe: Use head and tail pointers for the ring, not cursor and length [ver #3]") 77a98a59a1ec5e35 d60337eff18a3c587832ab8053a ---------------- --------------------------- fail:runs %reproduction fail:runs | | | :4 25% 1:4 kmsg.de###] :4 100% 4:4 kmsg.head=#,tail=#,buffers= :4 100% 4:4 kmsg.idx=#,offset= :4 100% 4:4 dmesg.RIP:sanity 1:4 -25% :4 dmesg.WARNING:at#for_ip_swapgs_restore_regs_and_return_to_usermode/0x :4 100% 4:4 dmesg.WARNING:at_lib/iov_iter.c:#sanity 1:4 -25% :4 dmesg.WARNING:stack_recursion %stddev %change %stddev \ | \ 75726 ± 2% +144.0% 184798 ± 8% phoronix-test-suite.noise-level.0.activity_level 46.75 ±115% -84.0% 7.50 ±157% interrupts.CPU0.TLB:TLB_shootdowns 36.05 ± 4% +26.1% 45.47 ± 4% boot-time.boot 504.75 ± 4% +21.9% 615.34 ± 3% boot-time.idle 84041 -1.2% 83015 proc-vmstat.nr_inactive_file 84041 -1.2% 83015 proc-vmstat.nr_zone_inactive_file 1016 ± 6% +10.9% 1126 ± 4% vmstat.system.cs 31702 -47.1% 16758 vmstat.system.in 2596 ± 19% -59.5% 1051 ± 70% numa-numastat.node0.other_node 111841 ± 34% +42.4% 159231 ± 28% numa-numastat.node1.local_node 112390 ± 34% +43.6% 161373 ± 28% numa-numastat.node1.numa_hit 548.75 ± 96% +290.6% 2143 ± 35% numa-numastat.node1.other_node 1.228e+09 ± 28% +52.4% 1.872e+09 ± 35% cpuidle.C3.time 2650850 ± 15% +87.2% 4961279 ± 36% cpuidle.C6.time 3765 ± 18% +70.5% 6419 ± 40% cpuidle.C6.usage 552648 ± 27% +374.5% 2622569 ± 48% cpuidle.POLL.time 8453 ± 12% +150.4% 21166 ± 30% cpuidle.POLL.usage 23.38 ± 43% -57.0% 10.04 ± 53% sched_debug.cfs_rq:/.load_avg.min 7840 ± 7% +74.8% 13701 ± 4% sched_debug.cfs_rq:/.min_vruntime.avg 16419 ± 8% +105.1% 33672 ± 10% sched_debug.cfs_rq:/.min_vruntime.max 3796 ± 4% +101.9% 7666 ± 11% sched_debug.cfs_rq:/.min_vruntime.stddev 3799 ± 4% +101.8% 7667 ± 11% sched_debug.cfs_rq:/.spread0.stddev 0.73 ± 28% -44.7% 0.41 ± 40% sched_debug.cpu.nr_running.avg 0.72 ± 20% -35.9% 0.46 ± 18% sched_debug.cpu.nr_running.stddev 6932 ± 23% +80.9% 12543 ± 12% sched_debug.cpu.nr_switches.avg 3053 ± 27% +78.6% 5452 ± 7% sched_debug.cpu.nr_switches.min 16201 ± 32% -70.7% 4750 ± 38% numa-vmstat.node0.nr_active_file 215951 ± 35% -56.4% 94255 ± 60% numa-vmstat.node0.nr_file_pages 151995 ± 50% -61.0% 59210 ± 57% numa-vmstat.node0.nr_inactive_anon 152629 ± 50% -60.9% 59672 ± 57% numa-vmstat.node0.nr_shmem 16201 ± 32% -70.7% 4750 ± 38% numa-vmstat.node0.nr_zone_active_file 151995 ± 50% -61.0% 59210 ± 57% numa-vmstat.node0.nr_zone_inactive_anon 12930 ±137% -90.0% 1293 ± 54% numa-vmstat.node0.numa_other 9501 ± 58% +123.8% 21263 ± 9% numa-vmstat.node1.nr_active_file 158673 ± 47% +75.9% 279042 ± 20% numa-vmstat.node1.nr_file_pages 2767 ± 11% -15.7% 2334 ± 6% numa-vmstat.node1.nr_kernel_stack 9501 ± 58% +123.8% 21263 ± 9% numa-vmstat.node1.nr_zone_active_file 64781 ± 32% -70.7% 19003 ± 38% numa-meminfo.node0.Active(file) 863806 ± 35% -56.4% 377022 ± 60% numa-meminfo.node0.FilePages 796441 ± 36% -55.3% 356115 ± 61% numa-meminfo.node0.Inactive 607982 ± 50% -61.0% 236841 ± 57% numa-meminfo.node0.Inactive(anon) 1156778 ± 26% -46.6% 617340 ± 46% numa-meminfo.node0.MemUsed 610519 ± 50% -60.9% 238689 ± 57% numa-meminfo.node0.Shmem 163141 ± 13% +58.1% 257940 ± 30% numa-meminfo.node1.Active 38001 ± 58% +123.8% 85055 ± 9% numa-meminfo.node1.Active(file) 634701 ± 47% +75.9% 1116171 ± 20% numa-meminfo.node1.FilePages 593680 ± 49% +72.8% 1026170 ± 21% numa-meminfo.node1.Inactive 2774 ± 11% -15.7% 2338 ± 5% numa-meminfo.node1.KernelStack 884323 ± 34% +60.4% 1418847 ± 20% numa-meminfo.node1.MemUsed 11.10 ± 4% +21.4% 13.47 ± 2% perf-stat.i.MPKI 3.67e+08 ± 13% -48.5% 1.889e+08 ± 3% perf-stat.i.branch-instructions 6020544 ± 72% -60.4% 2383477 ± 2% perf-stat.i.branch-misses 4.82 ± 6% -0.9 3.92 ± 3% perf-stat.i.cache-miss-rate% 754312 ± 8% -45.6% 410529 ± 7% perf-stat.i.cache-misses 15105378 -35.5% 9742537 ± 2% perf-stat.i.cache-references 951.84 ± 7% +12.5% 1070 ± 3% perf-stat.i.context-switches 5.32e+09 ± 5% -47.6% 2.79e+09 ± 4% perf-stat.i.cpu-cycles 0.11 ± 9% +0.1 0.17 ± 7% perf-stat.i.dTLB-load-miss-rate% 4.238e+08 ± 13% -46.4% 2.273e+08 ± 2% perf-stat.i.dTLB-loads 0.22 ± 5% +0.1 0.35 ± 3% perf-stat.i.dTLB-store-miss-rate% 1.705e+08 ± 7% -38.9% 1.042e+08 ± 3% perf-stat.i.dTLB-stores 365420 ± 3% -38.8% 223608 ± 5% perf-stat.i.iTLB-load-misses 1.533e+09 ± 15% -48.4% 7.915e+08 ± 2% perf-stat.i.iTLB-loads 1.511e+09 ± 15% -50.0% 7.565e+08 perf-stat.i.instructions 4573 ± 15% -16.7% 3808 ± 3% perf-stat.i.instructions-per-iTLB-miss 10.20 ± 13% +26.0% 12.85 ± 2% perf-stat.overall.MPKI 4.99 ± 7% -0.8 4.22 ± 4% perf-stat.overall.cache-miss-rate% 0.13 ± 11% +0.1 0.21 ± 12% perf-stat.overall.dTLB-load-miss-rate% 0.27 ± 11% +0.1 0.39 ± 11% perf-stat.overall.dTLB-store-miss-rate% 4142 ± 15% -18.1% 3392 ± 6% perf-stat.overall.instructions-per-iTLB-miss 3.623e+08 ± 13% -48.2% 1.877e+08 ± 3% perf-stat.ps.branch-instructions 5944803 ± 72% -60.1% 2372479 ± 2% perf-stat.ps.branch-misses 744148 ± 8% -45.2% 408044 ± 6% perf-stat.ps.cache-misses 14895664 -35.2% 9653768 perf-stat.ps.cache-references 939.36 ± 6% +12.9% 1060 ± 2% perf-stat.ps.context-switches 5.252e+09 ± 5% -47.2% 2.771e+09 ± 4% perf-stat.ps.cpu-cycles 4.185e+08 ± 13% -46.0% 2.259e+08 ± 2% perf-stat.ps.dTLB-loads 1.684e+08 ± 7% -38.3% 1.038e+08 ± 3% perf-stat.ps.dTLB-stores 360508 ± 3% -38.4% 222217 ± 5% perf-stat.ps.iTLB-load-misses 1.514e+09 ± 15% -48.0% 7.866e+08 ± 2% perf-stat.ps.iTLB-loads 1.492e+09 ± 15% -49.6% 7.515e+08 perf-stat.ps.instructions 17337 ± 23% +98.0% 34327 ± 16% softirqs.CPU0.SCHED 50316 ± 20% +74.0% 87563 ± 29% softirqs.CPU0.TIMER 15541 ± 23% +75.0% 27190 ± 25% softirqs.CPU1.SCHED 46536 ± 26% +81.8% 84612 ± 18% softirqs.CPU1.TIMER 14140 ± 27% +90.7% 26969 ± 29% softirqs.CPU10.SCHED 44353 ± 23% +88.2% 83495 ± 23% softirqs.CPU10.TIMER 14456 ± 22% +109.7% 30308 ± 23% softirqs.CPU11.SCHED 45458 ± 22% +89.8% 86266 ± 28% softirqs.CPU11.TIMER 14745 ± 29% +113.5% 31485 ± 18% softirqs.CPU12.SCHED 45475 ± 28% +79.8% 81785 ± 22% softirqs.CPU12.TIMER 14339 ± 21% +116.7% 31070 ± 22% softirqs.CPU13.SCHED 45935 ± 20% +90.1% 87325 ± 25% softirqs.CPU13.TIMER 14439 ± 21% +95.7% 28260 ± 17% softirqs.CPU14.SCHED 45691 ± 20% +90.0% 86793 ± 19% softirqs.CPU14.TIMER 14234 ± 24% +107.0% 29466 ± 23% softirqs.CPU15.SCHED 47195 ± 23% +83.0% 86374 ± 21% softirqs.CPU15.TIMER 14252 ± 26% +101.4% 28710 ± 20% softirqs.CPU2.SCHED 50804 ± 23% +62.1% 82341 ± 20% softirqs.CPU2.TIMER 46701 ± 30% +81.4% 84697 ± 22% softirqs.CPU3.TIMER 14081 ± 26% +104.9% 28858 ± 28% softirqs.CPU4.SCHED 44533 ± 29% +91.5% 85281 ± 21% softirqs.CPU4.TIMER 14698 ± 23% +93.4% 28431 ± 24% softirqs.CPU5.SCHED 48080 ± 26% +68.6% 81081 ± 23% softirqs.CPU5.TIMER 14040 ± 25% +93.9% 27217 ± 18% softirqs.CPU6.SCHED 41048 ± 28% +100.0% 82104 ± 20% softirqs.CPU6.TIMER 13985 ± 20% +100.3% 28012 ± 28% softirqs.CPU7.SCHED 44020 ± 23% +85.0% 81425 ± 27% softirqs.CPU7.TIMER 14187 ± 24% +100.1% 28390 ± 17% softirqs.CPU8.SCHED 44349 ± 26% +84.9% 81992 ± 24% softirqs.CPU8.TIMER 14201 ± 24% +104.2% 29004 ± 19% softirqs.CPU9.SCHED 45976 ± 24% +82.6% 83939 ± 22% softirqs.CPU9.TIMER 233752 ± 23% +99.2% 465530 ± 21% softirqs.SCHED 736478 ± 24% +82.9% 1347084 ± 22% softirqs.TIMER 28.76 ±119% -25.5 3.26 ±173% perf-profile.calltrace.cycles-pp.cpu_idle_poll.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 15.99 ± 92% -13.0 3.00 ±173% perf-profile.calltrace.cycles-pp.__libc_start_main 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.ioctl.__libc_start_main 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.ioctl.__libc_start_main 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.event_function_call.perf_event_for_each_child._perf_ioctl.perf_ioctl.do_vfs_ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.smp_call_function_single.event_function_call.perf_event_for_each_child._perf_ioctl.perf_ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.ioctl.__libc_start_main 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.__x64_sys_ioctl.do_syscall_64.entry_SYSCALL_64_after_hwframe.ioctl.__libc_start_main 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.ksys_ioctl.__x64_sys_ioctl.do_syscall_64.entry_SYSCALL_64_after_hwframe.ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.do_vfs_ioctl.ksys_ioctl.__x64_sys_ioctl.do_syscall_64.entry_SYSCALL_64_after_hwframe 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.perf_ioctl.do_vfs_ioctl.ksys_ioctl.__x64_sys_ioctl.do_syscall_64 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp._perf_ioctl.perf_ioctl.do_vfs_ioctl.ksys_ioctl.__x64_sys_ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.calltrace.cycles-pp.perf_event_for_each_child._perf_ioctl.perf_ioctl.do_vfs_ioctl.ksys_ioctl 9.93 ±130% -8.8 1.17 ±173% perf-profile.calltrace.cycles-pp.tick_check_broadcast_expired.cpu_idle_poll.do_idle.cpu_startup_entry.start_secondary 3.69 ±108% -1.0 2.66 ±173% perf-profile.calltrace.cycles-pp.perf_release.__fput.task_work_run.do_exit.do_group_exit 3.69 ±108% -1.0 2.66 ±173% perf-profile.calltrace.cycles-pp.perf_event_release_kernel.perf_release.__fput.task_work_run.do_exit 3.69 ±108% -1.0 2.67 ±173% perf-profile.calltrace.cycles-pp.task_work_run.do_exit.do_group_exit.get_signal.do_signal 3.69 ±108% -1.0 2.67 ±173% perf-profile.calltrace.cycles-pp.__fput.task_work_run.do_exit.do_group_exit.get_signal 3.70 ±108% -1.0 2.69 ±173% perf-profile.calltrace.cycles-pp.do_group_exit.get_signal.do_signal.exit_to_usermode_loop.do_syscall_64 3.70 ±108% -1.0 2.69 ±173% perf-profile.calltrace.cycles-pp.do_exit.do_group_exit.get_signal.do_signal.exit_to_usermode_loop 3.70 ±108% -1.0 2.69 ±173% perf-profile.calltrace.cycles-pp.do_signal.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.70 ±108% -1.0 2.69 ±173% perf-profile.calltrace.cycles-pp.get_signal.do_signal.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.70 ±108% -1.0 2.69 ±173% perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.on_each_cpu.flush_tlb_kernel_range.pmd_free_pte_page.ioremap_page_range.__ioremap_caller 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.smp_call_function_many.on_each_cpu.flush_tlb_kernel_range.pmd_free_pte_page.ioremap_page_range 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.drm_client_buffer_vmap.drm_fb_helper_dirty_work.process_one_work.worker_thread.kthread 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.drm_gem_vmap.drm_client_buffer_vmap.drm_fb_helper_dirty_work.process_one_work.worker_thread 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.drm_gem_vram_object_vmap.drm_gem_vmap.drm_client_buffer_vmap.drm_fb_helper_dirty_work.process_one_work 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.drm_gem_vram_kmap.drm_gem_vram_object_vmap.drm_gem_vmap.drm_client_buffer_vmap.drm_fb_helper_dirty_work 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.ttm_bo_kmap.drm_gem_vram_kmap.drm_gem_vram_object_vmap.drm_gem_vmap.drm_client_buffer_vmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.__ioremap_caller.ttm_bo_kmap.drm_gem_vram_kmap.drm_gem_vram_object_vmap.drm_gem_vmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.ioremap_page_range.__ioremap_caller.ttm_bo_kmap.drm_gem_vram_kmap.drm_gem_vram_object_vmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.pmd_free_pte_page.ioremap_page_range.__ioremap_caller.ttm_bo_kmap.drm_gem_vram_kmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.calltrace.cycles-pp.flush_tlb_kernel_range.pmd_free_pte_page.ioremap_page_range.__ioremap_caller.ttm_bo_kmap 28.76 ±119% -25.5 3.26 ±173% perf-profile.children.cycles-pp.cpu_idle_poll 15.19 ± 82% -13.2 1.95 ±164% perf-profile.children.cycles-pp.smp_call_function_single 10.12 ± 67% -9.2 0.94 ±173% perf-profile.children.cycles-pp.ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.children.cycles-pp.__x64_sys_ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.children.cycles-pp.ksys_ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.children.cycles-pp.do_vfs_ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.children.cycles-pp.perf_ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.children.cycles-pp._perf_ioctl 10.12 ± 67% -9.2 0.94 ±173% perf-profile.children.cycles-pp.perf_event_for_each_child 10.18 ±125% -9.0 1.22 ±163% perf-profile.children.cycles-pp.tick_check_broadcast_expired 10.55 ± 69% -8.7 1.87 ±173% perf-profile.children.cycles-pp.event_function_call 3.08 ± 73% -3.1 0.00 perf-profile.children.cycles-pp.perf_event_ctx_lock_nested 3.08 ± 73% -3.1 0.00 perf-profile.children.cycles-pp.__mutex_lock 3.08 ± 73% -3.1 0.00 perf-profile.children.cycles-pp.mutex_spin_on_owner 3.69 ±108% -1.0 2.66 ±173% perf-profile.children.cycles-pp.perf_release 3.69 ±108% -1.0 2.66 ±173% perf-profile.children.cycles-pp.perf_event_release_kernel 3.70 ±108% -1.0 2.69 ±173% perf-profile.children.cycles-pp.do_signal 3.70 ±108% -1.0 2.69 ±173% perf-profile.children.cycles-pp.get_signal 3.69 ±108% -1.0 2.68 ±173% perf-profile.children.cycles-pp.task_work_run 3.69 ±108% -1.0 2.68 ±173% perf-profile.children.cycles-pp.__fput 3.70 ±108% -1.0 2.70 ±173% perf-profile.children.cycles-pp.exit_to_usermode_loop 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.drm_client_buffer_vmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.drm_gem_vmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.drm_gem_vram_object_vmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.drm_gem_vram_kmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.ttm_bo_kmap 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.__ioremap_caller 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.ioremap_page_range 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.pmd_free_pte_page 8.19 ± 96% +2.2 10.43 ±173% perf-profile.children.cycles-pp.flush_tlb_kernel_range 9.71 ± 94% +2.4 12.15 ±173% perf-profile.children.cycles-pp.on_each_cpu 9.71 ± 94% +2.4 12.15 ±173% perf-profile.children.cycles-pp.smp_call_function_many 0.07 ± 65% +6.3 6.34 ±169% perf-profile.children.cycles-pp.handle_mm_fault 0.06 ± 68% +6.3 6.34 ±170% perf-profile.children.cycles-pp.__handle_mm_fault 18.50 ±116% -16.4 2.09 ±173% perf-profile.self.cycles-pp.cpu_idle_poll 15.18 ± 82% -13.8 1.35 ±161% perf-profile.self.cycles-pp.smp_call_function_single 10.18 ±125% -9.0 1.22 ±163% perf-profile.self.cycles-pp.tick_check_broadcast_expired 2.84 ± 85% -2.8 0.00 perf-profile.self.cycles-pp.mutex_spin_on_owner 9.32 ± 99% +2.8 12.11 ±173% perf-profile.self.cycles-pp.smp_call_function_many phoronix-test-suite.noise-level.0.activity_level 220000 +-O----------------------------------------------------------------+ | O O | 200000 +-+ O O 180000 +-+ O O O O | | O O | 160000 +-+ O O O O O O O O O | O O O O O O | 140000 +-+ O O O | | | 120000 +-+ | 100000 +-+ | | | 80000 +-+ .+.. .+. .+. .+. .+.+.+..+.+.+.. .+.. .+.. | |.+..+ + +. +..+.+.+. +. + +.+ +.+ | 60000 +-+----------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 2 months

3
2
0 / 0

[sched] 10e7071b2f: BUG:kernel_NULL_pointer_dereference,address

by kernel test robot

FYI, we noticed the following commit (built with gcc-7): commit: 10e7071b2f491b0fb981717ea0a585c441906ede ("sched: Rework CPU hotplug task selection") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: kernel_selftests with following parameters: group: kselftests-01 test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel. test-url: https://www.kernel.org/doc/Documentation/kselftest.txt on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +-------------------------------------------------+------------+------------+ | | f95d4eaee6 | 10e7071b2f | +-------------------------------------------------+------------+------------+ | boot_successes | 54 | 12 | | boot_failures | 0 | 82 | | BUG:kernel_NULL_pointer_dereference,address | 0 | 79 | | Oops:#[##] | 0 | 79 | | RIP:pick_next_task_dl | 0 | 79 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 79 | | BUG:kernel_reboot-without-warning_in_test_stage | 0 | 3 | +-------------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 84.432464] BUG: kernel NULL pointer dereference, address: 0000000000000064 [ 84.433700] #PF: supervisor read access in kernel mode [ 84.434589] #PF: error_code(0x0000) - not-present page [ 84.435499] PGD 0 P4D 0 [ 84.435933] Oops: 0000 [#1] SMP PTI [ 84.436581] CPU: 1 PID: 15 Comm: migration/1 Not tainted 5.3.0-rc1-00086-g10e7071b2f491 #1 [ 84.438004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 84.439461] RIP: 0010:pick_next_task_dl+0xe/0xf0 [ 84.440266] Code: ed bd 70 01 01 e8 42 2d fb ff 0f 0b e9 6b ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55 53 48 89 fb 48 83 ec 10 <8b> 46 64 85 c0 78 73 48 81 7e 78 a0 3f e2 a7 74 57 48 83 bb 10 09 [ 84.443485] RSP: 0000:ffffa5518008bd40 EFLAGS: 00010082 [ 84.444423] RAX: ffffffffa6eeeae0 RBX: ffff98ebbfd2b0c0 RCX: ffff98ebbfd2d040 [ 84.445641] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff98ebbfd2b0c0 [ 84.446877] RBP: ffffa5518008bdc0 R08: 0000001ac1016512 R09: 0000000000000001 [ 84.448128] R10: ffffffffa863e640 R11: 0000000000000003 R12: ffff98ebbfd2b0c0 [ 84.449349] R13: ffffffffa7e23fa0 R14: ffffffffa7e24060 R15: 0000000000000000 [ 84.450603] FS: 0000000000000000(0000) GS:ffff98ebbfd00000(0000) knlGS:0000000000000000 [ 84.452007] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.453022] CR2: 0000000000000064 CR3: 00000001aab84000 CR4: 00000000000406e0 [ 84.454244] Call Trace: [ 84.455263] ? update_rq_clock+0x6d/0xe0 [ 84.456081] sched_cpu_dying+0x104/0x380 [ 84.456777] ? sched_cpu_starting+0xf0/0xf0 [ 84.457510] cpuhp_invoke_callback+0x86/0x5d0 [ 84.458279] ? cpu_disable_common+0x292/0x2b0 [ 84.459047] take_cpu_down+0x60/0xb0 [ 84.459649] multi_cpu_stop+0x6b/0x100 [ 84.460339] ? stop_machine_yield+0x10/0x10 [ 84.461078] cpu_stopper_thread+0x9e/0x110 [ 84.461809] ? smpboot_thread_fn+0x2f/0x1e0 [ 84.462539] ? smpboot_thread_fn+0x74/0x1e0 [ 84.463280] ? smpboot_thread_fn+0x14e/0x1e0 [ 84.464024] smpboot_thread_fn+0x149/0x1e0 [ 84.464768] ? sort_range+0x20/0x20 [ 84.465389] kthread+0x11e/0x140 [ 84.465961] ? kthread_park+0xa0/0xa0 [ 84.466605] ret_from_fork+0x35/0x40 [ 84.467236] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver binfmt_misc intel_rapl_msr intel_rapl_common sr_mod crct10dif_pclmul cdrom crc32_pclmul sg crc32c_intel ghash_clmulni_intel ata_generic pata_acpi ppdev bochs_drm drm_vram_helper ttm drm_kms_helper syscopyarea sysfillrect snd_pcm sysimgblt fb_sys_fops drm aesni_intel snd_timer ata_piix crypto_simd snd cryptd glue_helper libata soundcore pcspkr joydev serio_raw parport_pc i2c_piix4 parport floppy ip_tables [ 84.474471] CR2: 0000000000000064 [ 84.475066] ---[ end trace af8f1919a81ca744 ]--- To reproduce: # build kernel cd linux cp config-5.3.0-rc1-00086-g10e7071b2f491 .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

1 year, 2 months

4
7
0 / 0

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LKP November 2019