June 2014 - LKP - Ml01.01.Org

[rcu] e552592e038: +39.2% vm-scalability.throughput, +19.7% turbostat.Pkg_W

by Fengguang Wu

Hi Paul, We noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git urgent.2014.06.21a commit e552592e0383bc72e35eb21a9fabd84ad873cff1 ("rcu: Reduce overhead of cond_resched() checks for RCU") Test case: brickland3/vm-scalability/300s-anon-w-seq-mt-64G v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 89766370 ~ 6% +39.2% 1.25e+08 ~ 9% TOTAL vm-scalability.throughput 1.317e+09 ~ 8% -45.2% 7.21e+08 ~10% TOTAL cpuidle.C6-IVT-4S.time 9 ~ 6% +58.8% 15 ~ 5% TOTAL vmstat.procs.r 12.27 ~14% +44.7% 17.74 ~12% TOTAL turbostat.%c1 20538 ~ 4% -21.3% 16155 ~ 4% TOTAL cpuidle.C6-IVT-4S.usage 77.66 ~ 2% -15.0% 65.98 ~ 5% TOTAL turbostat.%c6 260 ~ 2% -16.4% 217 ~ 4% TOTAL vmstat.memory.buff 51920 ~ 7% -14.3% 44489 ~ 5% TOTAL numa-meminfo.node0.PageTables 53822 ~ 5% -15.6% 45404 ~ 6% TOTAL proc-vmstat.nr_page_table_pages 215196 ~ 5% -15.7% 181409 ~ 6% TOTAL meminfo.PageTables 52182 ~ 4% -15.2% 44271 ~ 6% TOTAL proc-vmstat.nr_anon_transparent_hugepages 12881 ~ 7% -13.4% 11150 ~ 5% TOTAL numa-vmstat.node0.nr_page_table_pages 1.068e+08 ~ 4% -15.2% 90492587 ~ 6% TOTAL meminfo.AnonHugePages 26983682 ~ 4% -14.5% 23071571 ~ 6% TOTAL proc-vmstat.nr_anon_pages 1.079e+08 ~ 4% -14.5% 92289854 ~ 6% TOTAL meminfo.AnonPages 1.083e+08 ~ 4% -14.2% 92897630 ~ 6% TOTAL meminfo.Active(anon) 1.084e+08 ~ 4% -14.2% 92970821 ~ 6% TOTAL meminfo.Active 27067517 ~ 4% -14.2% 23232055 ~ 6% TOTAL proc-vmstat.nr_active_anon 52565 ~ 3% -12.0% 46273 ~ 3% TOTAL proc-vmstat.nr_shmem 52499 ~ 3% -12.0% 46215 ~ 3% TOTAL proc-vmstat.nr_inactive_anon 214447 ~ 3% -10.5% 191862 ~ 2% TOTAL meminfo.Shmem 214197 ~ 3% -10.5% 191636 ~ 2% TOTAL meminfo.Inactive(anon) 2779 ~13% -53.5% 1291 ~19% TOTAL time.involuntary_context_switches 1156 ~ 8% +82.3% 2108 ~ 9% TOTAL time.percent_of_cpu_this_job_got 11.58 ~10% -44.4% 6.45 ~ 9% TOTAL time.elapsed_time 1008 ~ 5% +79.5% 1810 ~ 7% TOTAL time.voluntary_context_switches 9.23 ~ 8% +72.8% 15.95 ~ 8% TOTAL turbostat.%c0 12679 ~ 8% +70.8% 21659 ~ 9% TOTAL vmstat.system.in 145 ~ 7% +60.6% 234 ~ 8% TOTAL vmstat.io.bo 3721 ~ 7% +35.2% 5029 ~ 8% TOTAL vmstat.system.cs ~ 1% +26.7% ~ 5% TOTAL turbostat.Cor_W ~ 2% +21.2% ~ 3% TOTAL turbostat.RAM_W ~ 1% +19.7% ~ 4% TOTAL turbostat.Pkg_W All test cases: v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 89766370 ~ 6% +39.2% 1.25e+08 ~ 9% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 89766370 ~ 6% +39.2% 1.25e+08 ~ 9% TOTAL vm-scalability.throughput v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 0.36 ~ 1% -9.8% 0.32 ~ 2% lkp-nex05/will-it-scale/open1 0.36 ~ 1% -9.8% 0.32 ~ 2% TOTAL will-it-scale.scalability v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 466616 ~ 1% -2.6% 454267 ~ 1% lkp-nex05/will-it-scale/open1 511556 ~ 0% -1.3% 504762 ~ 0% lkp-snb01/will-it-scale/signal1 978172 ~ 0% -2.0% 959029 ~ 0% TOTAL will-it-scale.per_process_ops v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1381706 ~ 1% +2.3% 1413190 ~ 0% lkp-snb01/will-it-scale/futex2 299558 ~ 0% -1.8% 294312 ~ 0% lkp-snb01/will-it-scale/signal1 1681264 ~ 1% +1.6% 1707503 ~ 0% TOTAL will-it-scale.per_thread_ops v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 84771 ~ 2% +575.2% 572390 ~ 1% lkp-nex05/will-it-scale/open1 84771 ~ 2% +575.2% 572390 ~ 1% TOTAL slabinfo.kmalloc-256.active_objs v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 2656 ~ 2% +573.8% 17896 ~ 1% lkp-nex05/will-it-scale/open1 2656 ~ 2% +573.8% 17896 ~ 1% TOTAL slabinfo.kmalloc-256.num_slabs v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 85011 ~ 2% +573.7% 572697 ~ 1% lkp-nex05/will-it-scale/open1 85011 ~ 2% +573.7% 572697 ~ 1% TOTAL slabinfo.kmalloc-256.num_objs v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 2656 ~ 2% +573.8% 17896 ~ 1% lkp-nex05/will-it-scale/open1 2656 ~ 2% +573.8% 17896 ~ 1% TOTAL slabinfo.kmalloc-256.active_slabs v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1533310 ~ 2% -83.7% 250652 ~ 1% lkp-nex05/will-it-scale/open1 289790 ~ 4% -67.2% 94913 ~ 4% lkp-snb01/will-it-scale/futex2 204559 ~ 4% -62.6% 76449 ~ 7% lkp-snb01/will-it-scale/signal1 2027660 ~ 3% -79.2% 422015 ~ 3% TOTAL softirqs.RCU v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 47388 ~ 5% +147.5% 117277 ~ 1% lkp-nex05/will-it-scale/open1 47388 ~ 5% +147.5% 117277 ~ 1% TOTAL numa-meminfo.node0.SUnreclaim v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 11836 ~ 5% +149.4% 29520 ~ 2% lkp-nex05/will-it-scale/open1 11836 ~ 5% +149.4% 29520 ~ 2% TOTAL numa-vmstat.node0.nr_slab_unreclaimable v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 97325 ~ 0% +125.2% 219188 ~ 1% lkp-nex05/will-it-scale/open1 97325 ~ 0% +125.2% 219188 ~ 1% TOTAL meminfo.SUnreclaim v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 24304 ~ 0% +125.0% 54686 ~ 0% lkp-nex05/will-it-scale/open1 24304 ~ 0% +125.0% 54686 ~ 0% TOTAL proc-vmstat.nr_slab_unreclaimable v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 6364 ~ 8% +117.8% 13864 ~ 3% lkp-nex05/will-it-scale/open1 6364 ~ 8% +117.8% 13864 ~ 3% TOTAL numa-vmstat.node1.nr_slab_unreclaimable v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 25487 ~ 8% +115.7% 54988 ~ 4% lkp-nex05/will-it-scale/open1 25487 ~ 8% +115.7% 54988 ~ 4% TOTAL numa-meminfo.node1.SUnreclaim v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 63365 ~ 5% +110.5% 133379 ~ 1% lkp-nex05/will-it-scale/open1 63365 ~ 5% +110.5% 133379 ~ 1% TOTAL numa-meminfo.node0.Slab v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 6335 ~11% +83.5% 11625 ~ 4% lkp-nex05/will-it-scale/open1 6335 ~11% +83.5% 11625 ~ 4% TOTAL numa-vmstat.node3.nr_slab_unreclaimable v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 25370 ~11% +82.1% 46193 ~ 5% lkp-nex05/will-it-scale/open1 25370 ~11% +82.1% 46193 ~ 5% TOTAL numa-meminfo.node3.SUnreclaim v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 140861 ~ 0% +86.5% 262647 ~ 1% lkp-nex05/will-it-scale/open1 140861 ~ 0% +86.5% 262647 ~ 1% TOTAL meminfo.Slab v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.317e+09 ~ 8% -45.2% 7.21e+08 ~10% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 1.317e+09 ~ 8% -45.2% 7.21e+08 ~10% TOTAL cpuidle.C6-IVT-4S.time v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 38627 ~ 5% +77.8% 68673 ~ 5% lkp-nex05/will-it-scale/open1 38627 ~ 5% +77.8% 68673 ~ 5% TOTAL numa-meminfo.node1.Slab v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.10 ~ 5% +70.3% 1.88 ~ 0% lkp-nex05/will-it-scale/open1 1.10 ~ 5% +70.3% 1.88 ~ 0% TOTAL perf-profile.cpu-cycles.setup_object.isra.47.__slab_alloc.kmem_cache_alloc.get_empty_filp.path_openat v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 2.54 ~ 6% -37.7% 1.58 ~ 5% lkp-snb01/will-it-scale/futex2 2.54 ~ 6% -37.7% 1.58 ~ 5% TOTAL perf-profile.cpu-cycles.get_futex_key.futex_wait_setup.futex_wait.do_futex.sys_futex v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 9 ~ 6% +58.8% 15 ~ 5% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 9 ~ 6% +58.8% 15 ~ 5% TOTAL vmstat.procs.r v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 12.27 ~14% +44.7% 17.74 ~12% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 12.27 ~14% +44.7% 17.74 ~12% TOTAL turbostat.%c1 v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 661578 ~ 2% -33.4% 440676 ~ 0% lkp-nex05/will-it-scale/open1 661578 ~ 2% -33.4% 440676 ~ 0% TOTAL cpuidle.C3-NHM.usage v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 39783 ~ 9% +50.5% 59862 ~ 5% lkp-nex05/will-it-scale/open1 39783 ~ 9% +50.5% 59862 ~ 5% TOTAL numa-meminfo.node3.Slab v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 2.03 ~ 8% +34.1% 2.73 ~ 2% lkp-nex05/will-it-scale/open1 2.03 ~ 8% +34.1% 2.73 ~ 2% TOTAL perf-profile.cpu-cycles.rcu_nocb_kthread.kthread.ret_from_fork v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 20538 ~ 4% -21.3% 16155 ~ 4% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 20538 ~ 4% -21.3% 16155 ~ 4% TOTAL cpuidle.C6-IVT-4S.usage v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.07 ~ 4% -17.3% 0.88 ~ 8% lkp-nex05/will-it-scale/open1 1.07 ~ 4% -17.3% 0.88 ~ 8% TOTAL perf-profile.cpu-cycles.__alloc_fd.get_unused_fd_flags.do_sys_open.sys_open.system_call_fastpath v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 77.66 ~ 2% -15.0% 65.98 ~ 5% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 77.66 ~ 2% -15.0% 65.98 ~ 5% TOTAL turbostat.%c6 v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 0.96 ~ 3% -14.8% 0.82 ~ 5% lkp-snb01/will-it-scale/futex2 0.96 ~ 3% -14.8% 0.82 ~ 5% TOTAL perf-profile.cpu-cycles.put_page.get_futex_key.futex_wait_setup.futex_wait.do_futex v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.08 ~ 4% +22.4% 1.33 ~ 2% lkp-nex05/will-it-scale/open1 1.08 ~ 4% +22.4% 1.33 ~ 2% TOTAL perf-profile.cpu-cycles.memset.get_empty_filp.path_openat.do_filp_open.do_sys_open v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 260 ~ 2% -16.4% 217 ~ 4% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 260 ~ 2% -16.4% 217 ~ 4% TOTAL vmstat.memory.buff v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 51920 ~ 7% -14.3% 44489 ~ 5% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 51920 ~ 7% -14.3% 44489 ~ 5% TOTAL numa-meminfo.node0.PageTables v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 53822 ~ 5% -15.6% 45404 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 53822 ~ 5% -15.6% 45404 ~ 6% TOTAL proc-vmstat.nr_page_table_pages v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 215196 ~ 5% -15.7% 181409 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 215196 ~ 5% -15.7% 181409 ~ 6% TOTAL meminfo.PageTables v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 52182 ~ 4% -15.2% 44271 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 52182 ~ 4% -15.2% 44271 ~ 6% TOTAL proc-vmstat.nr_anon_transparent_hugepages v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 12881 ~ 7% -13.4% 11150 ~ 5% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 12881 ~ 7% -13.4% 11150 ~ 5% TOTAL numa-vmstat.node0.nr_page_table_pages v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.068e+08 ~ 4% -15.2% 90492587 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 1.068e+08 ~ 4% -15.2% 90492587 ~ 6% TOTAL meminfo.AnonHugePages v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 26983682 ~ 4% -14.5% 23071571 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 26983682 ~ 4% -14.5% 23071571 ~ 6% TOTAL proc-vmstat.nr_anon_pages v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.83 ~ 6% +19.3% 2.18 ~ 5% lkp-nex05/will-it-scale/open1 1.83 ~ 6% +19.3% 2.18 ~ 5% TOTAL perf-profile.cpu-cycles.get_empty_filp.path_openat.do_filp_open.do_sys_open.sys_open v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.079e+08 ~ 4% -14.5% 92289854 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 1.079e+08 ~ 4% -14.5% 92289854 ~ 6% TOTAL meminfo.AnonPages v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 254457 ~ 2% -12.2% 223290 ~ 1% lkp-nex05/will-it-scale/open1 254457 ~ 2% -12.2% 223290 ~ 1% TOTAL softirqs.SCHED v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.083e+08 ~ 4% -14.2% 92897630 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 1.083e+08 ~ 4% -14.2% 92897630 ~ 6% TOTAL meminfo.Active(anon) v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1.084e+08 ~ 4% -14.2% 92970821 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 1.084e+08 ~ 4% -14.2% 92970821 ~ 6% TOTAL meminfo.Active v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 27067517 ~ 4% -14.2% 23232055 ~ 6% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 27067517 ~ 4% -14.2% 23232055 ~ 6% TOTAL proc-vmstat.nr_active_anon v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 52565 ~ 3% -12.0% 46273 ~ 3% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 52565 ~ 3% -12.0% 46273 ~ 3% TOTAL proc-vmstat.nr_shmem v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 52499 ~ 3% -12.0% 46215 ~ 3% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 52499 ~ 3% -12.0% 46215 ~ 3% TOTAL proc-vmstat.nr_inactive_anon v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 214447 ~ 3% -10.5% 191862 ~ 2% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 214447 ~ 3% -10.5% 191862 ~ 2% TOTAL meminfo.Shmem v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 214197 ~ 3% -10.5% 191636 ~ 2% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 214197 ~ 3% -10.5% 191636 ~ 2% TOTAL meminfo.Inactive(anon) v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 681017 ~ 0% +10.3% 751298 ~ 0% lkp-nex05/will-it-scale/open1 681017 ~ 0% +10.3% 751298 ~ 0% TOTAL numa-meminfo.node0.MemUsed v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 2779 ~13% -53.5% 1291 ~19% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 65403 ~ 4% -10.8% 58332 ~ 0% lkp-nex05/will-it-scale/open1 9638 ~ 2% +109.9% 20234 ~ 1% lkp-snb01/will-it-scale/futex2 10665 ~ 2% +103.8% 21733 ~ 2% lkp-snb01/will-it-scale/signal1 88486 ~ 4% +14.8% 101591 ~ 1% TOTAL time.involuntary_context_switches v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1156 ~ 8% +82.3% 2108 ~ 9% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 1156 ~ 8% +82.3% 2108 ~ 9% TOTAL time.percent_of_cpu_this_job_got v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 11.58 ~10% -44.4% 6.45 ~ 9% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 11.58 ~10% -44.4% 6.45 ~ 9% TOTAL time.elapsed_time v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 1008 ~ 5% +79.5% 1810 ~ 7% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 1008 ~ 5% +79.5% 1810 ~ 7% TOTAL time.voluntary_context_switches v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 9.23 ~ 8% +72.8% 15.95 ~ 8% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 9.23 ~ 8% +72.8% 15.95 ~ 8% TOTAL turbostat.%c0 v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 12679 ~ 8% +70.8% 21659 ~ 9% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 12679 ~ 8% +70.8% 21659 ~ 9% TOTAL vmstat.system.in v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 145 ~ 7% +60.6% 234 ~ 8% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 145 ~ 7% +60.6% 234 ~ 8% TOTAL vmstat.io.bo v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- 3721 ~ 7% +35.2% 5029 ~ 8% brickland3/vm-scalability/300s-anon-w-seq-mt-64G 5805 ~ 2% -55.9% 2563 ~ 0% lkp-nex05/will-it-scale/open1 897 ~ 1% +10.8% 994 ~ 1% lkp-snb01/will-it-scale/futex2 908 ~ 0% +11.7% 1014 ~ 0% lkp-snb01/will-it-scale/signal1 11332 ~ 3% -15.3% 9601 ~ 4% TOTAL vmstat.system.cs v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- ~ 1% +26.7% ~ 5% brickland3/vm-scalability/300s-anon-w-seq-mt-64G ~ 1% +26.7% ~ 5% TOTAL turbostat.Cor_W v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- ~ 2% +21.2% ~ 3% brickland3/vm-scalability/300s-anon-w-seq-mt-64G ~ 2% +21.2% ~ 3% TOTAL turbostat.RAM_W v3.16-rc1 e552592e0383bc72e35eb21a9 --------------- ------------------------- ~ 1% +19.7% ~ 4% brickland3/vm-scalability/300s-anon-w-seq-mt-64G ~ 1% +19.7% ~ 4% TOTAL turbostat.Pkg_W Legend: ~XX% - stddev percent [+-]XX% - change percent vmstat.system.cs 6000 *+-*------*--*-------------------------------------------------------+ | *. *... .*.. | 5500 ++ *. * | | | 5000 ++ | | | 4500 ++ | | | 4000 ++ | | | 3500 ++ | | | 3000 ++ | | | 2500 O+-O---O--O--O--O---O--O--O---O--O--O--O---O--O--O---O--O--O--O---O--O [*] 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, Fengguang

7 years, 11 months

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[rcu] 0acd7c39a85: +11.0% will-it-scale.scalability

by Fengguang Wu

Hi Paul, FYI, we are pleased to notice big performance gains in some will-it-scale test cases: git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu_cond_resched.2014.06.20c commit 0acd7c39a85836d90451b6c278c5cfdd21c055f3 ("rcu: Add RCU_COND_RESCHED_QS for large systems") acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 0.30 ~ 2% +14.3% 0.34 ~ 3% lkp-sbx04/will-it-scale/open1 0.34 ~ 3% +8.1% 0.37 ~ 1% nhm4/will-it-scale/read1 0.64 ~ 3% +11.0% 0.71 ~ 2% TOTAL will-it-scale.scalability acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 592828 ~ 1% +3.8% 615531 ~ 1% lkp-sbx04/will-it-scale/open1 592828 ~ 1% +3.8% 615531 ~ 1% TOTAL will-it-scale.per_process_ops acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 1689 ~ 0% +498.1% 10107 ~ 2% lkp-sbx04/will-it-scale/unlink2 1689 ~ 0% +498.1% 10107 ~ 2% TOTAL slabinfo.dentry.active_slabs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 72052 ~ 0% +489.8% 424930 ~ 2% lkp-sbx04/will-it-scale/unlink2 72052 ~ 0% +489.8% 424930 ~ 2% TOTAL slabinfo.Acpi-State.num_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 71629 ~ 0% +492.6% 424494 ~ 2% lkp-sbx04/will-it-scale/unlink2 71629 ~ 0% +492.6% 424494 ~ 2% TOTAL slabinfo.Acpi-State.active_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 1689 ~ 0% +498.1% 10107 ~ 2% lkp-sbx04/will-it-scale/unlink2 1689 ~ 0% +498.1% 10107 ~ 2% TOTAL slabinfo.dentry.num_slabs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 1412 ~ 0% +490.0% 8331 ~ 2% lkp-sbx04/will-it-scale/unlink2 1412 ~ 0% +490.0% 8331 ~ 2% TOTAL slabinfo.Acpi-State.active_slabs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 70980 ~ 0% +498.1% 424517 ~ 2% lkp-sbx04/will-it-scale/unlink2 70980 ~ 0% +498.1% 424517 ~ 2% TOTAL slabinfo.dentry.num_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 70444 ~ 0% +502.0% 424054 ~ 2% lkp-sbx04/will-it-scale/unlink2 70444 ~ 0% +502.0% 424054 ~ 2% TOTAL slabinfo.dentry.active_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 472 ~ 0% +1557.0% 7827 ~ 2% lkp-sbx04/will-it-scale/unlink2 472 ~ 0% +1557.0% 7827 ~ 2% TOTAL slabinfo.shmem_inode_cache.num_slabs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 472 ~ 0% +1557.0% 7827 ~ 2% lkp-sbx04/will-it-scale/unlink2 472 ~ 0% +1557.0% 7827 ~ 2% TOTAL slabinfo.shmem_inode_cache.active_slabs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 22697 ~ 0% +1555.5% 375756 ~ 2% lkp-sbx04/will-it-scale/unlink2 22697 ~ 0% +1555.5% 375756 ~ 2% TOTAL slabinfo.shmem_inode_cache.num_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 22297 ~ 0% +1584.0% 375494 ~ 2% lkp-sbx04/will-it-scale/unlink2 22297 ~ 0% +1584.0% 375494 ~ 2% TOTAL slabinfo.shmem_inode_cache.active_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 1412 ~ 0% +490.0% 8331 ~ 2% lkp-sbx04/will-it-scale/unlink2 1412 ~ 0% +490.0% 8331 ~ 2% TOTAL slabinfo.Acpi-State.num_slabs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 230182 ~ 2% +214.7% 724407 ~ 1% lkp-sbx04/will-it-scale/open1 29926 ~ 1% +1179.6% 382938 ~ 2% lkp-sbx04/will-it-scale/unlink2 260108 ~ 2% +325.7% 1107345 ~ 1% TOTAL slabinfo.kmalloc-256.active_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 3605 ~ 2% +214.1% 11325 ~ 1% lkp-sbx04/will-it-scale/open1 478 ~ 1% +1153.4% 5991 ~ 2% lkp-sbx04/will-it-scale/unlink2 4083 ~ 2% +324.1% 17316 ~ 1% TOTAL slabinfo.kmalloc-256.num_slabs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 3605 ~ 2% +214.1% 11325 ~ 1% lkp-sbx04/will-it-scale/open1 478 ~ 1% +1153.4% 5991 ~ 2% lkp-sbx04/will-it-scale/unlink2 4083 ~ 2% +324.1% 17316 ~ 1% TOTAL slabinfo.kmalloc-256.active_slabs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 230776 ~ 2% +214.1% 724862 ~ 1% lkp-sbx04/will-it-scale/open1 30619 ~ 1% +1152.4% 383473 ~ 2% lkp-sbx04/will-it-scale/unlink2 261395 ~ 2% +324.0% 1108335 ~ 1% TOTAL slabinfo.kmalloc-256.num_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 38033 ~ 2% +85.2% 70426 ~ 3% lkp-sbx04/will-it-scale/open1 27083 ~ 8% +375.9% 128878 ~ 1% lkp-sbx04/will-it-scale/unlink2 65116 ~ 4% +206.1% 199305 ~ 2% TOTAL numa-meminfo.node1.SUnreclaim acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 9470 ~ 1% +87.6% 17770 ~ 4% lkp-sbx04/will-it-scale/open1 6769 ~ 8% +375.7% 32201 ~ 1% lkp-sbx04/will-it-scale/unlink2 16240 ~ 4% +207.7% 49971 ~ 2% TOTAL numa-vmstat.node1.nr_slab_unreclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 302149 ~ 1% -73.4% 80465 ~ 0% lkp-nex05/will-it-scale/lock1 853141 ~ 2% -66.6% 284788 ~ 3% lkp-sbx04/will-it-scale/open1 693207 ~ 0% -82.6% 120744 ~ 9% lkp-sbx04/will-it-scale/unlink2 434870 ~ 2% -63.8% 157362 ~ 1% lkp-wsx01/will-it-scale/futex2 55884 ~ 5% -55.3% 24956 ~ 4% nhm4/will-it-scale/read1 2339252 ~ 1% -71.4% 668317 ~ 3% TOTAL softirqs.RCU acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 51492 ~ 3% +75.4% 90311 ~ 2% lkp-sbx04/will-it-scale/open1 39615 ~ 2% +332.8% 171468 ~ 1% lkp-sbx04/will-it-scale/unlink2 91107 ~ 3% +187.3% 261779 ~ 1% TOTAL numa-meminfo.node0.SUnreclaim acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 18566237 ~32% +133.3% 43314913 ~21% lkp-sbx04/will-it-scale/open1 22235565 ~30% +176.7% 61536286 ~21% lkp-sbx04/will-it-scale/unlink2 40801803 ~31% +157.0% 104851199 ~21% TOTAL cpuidle.C1-SNB.time acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 12835 ~ 4% +76.6% 22664 ~ 3% lkp-sbx04/will-it-scale/open1 9928 ~ 2% +331.3% 42820 ~ 1% lkp-sbx04/will-it-scale/unlink2 22764 ~ 3% +187.7% 65484 ~ 1% TOTAL numa-vmstat.node0.nr_slab_unreclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 149956 ~ 1% +81.6% 272270 ~ 1% lkp-sbx04/will-it-scale/open1 112319 ~ 0% +312.8% 463620 ~ 1% lkp-sbx04/will-it-scale/unlink2 262275 ~ 1% +180.6% 735890 ~ 1% TOTAL meminfo.SUnreclaim acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 49308 ~ 4% +66.6% 82136 ~ 3% lkp-sbx04/will-it-scale/open1 38437 ~ 5% +314.4% 159290 ~ 2% lkp-sbx04/will-it-scale/unlink2 87745 ~ 4% +175.1% 241426 ~ 2% TOTAL numa-meminfo.node1.Slab acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 37339 ~ 1% +81.4% 67717 ~ 1% lkp-sbx04/will-it-scale/open1 28028 ~ 0% +313.1% 115797 ~ 1% lkp-sbx04/will-it-scale/unlink2 65368 ~ 1% +180.7% 183514 ~ 1% TOTAL proc-vmstat.nr_slab_unreclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 31729 ~ 8% +79.4% 56907 ~ 2% lkp-sbx04/will-it-scale/open1 22831 ~ 6% +295.0% 90181 ~ 2% lkp-sbx04/will-it-scale/unlink2 54560 ~ 7% +169.6% 147088 ~ 2% TOTAL numa-meminfo.node2.SUnreclaim acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 8014 ~ 9% +77.4% 14215 ~ 3% lkp-sbx04/will-it-scale/open1 5703 ~ 6% +294.5% 22500 ~ 2% lkp-sbx04/will-it-scale/unlink2 13717 ~ 8% +167.6% 36715 ~ 2% TOTAL numa-vmstat.node2.nr_slab_unreclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 14049 ~ 9% +162.8% 36926 ~ 2% lkp-sbx04/will-it-scale/unlink2 14049 ~ 9% +162.8% 36926 ~ 2% TOTAL numa-meminfo.node0.SReclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 3505 ~ 9% +163.0% 9218 ~ 1% lkp-sbx04/will-it-scale/unlink2 3505 ~ 9% +163.0% 9218 ~ 1% TOTAL numa-vmstat.node0.nr_slab_reclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 2840 ~ 6% +167.5% 7598 ~ 4% lkp-sbx04/will-it-scale/unlink2 2840 ~ 6% +167.5% 7598 ~ 4% TOTAL numa-vmstat.node1.nr_slab_reclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 11353 ~ 6% +167.9% 30411 ~ 4% lkp-sbx04/will-it-scale/unlink2 11353 ~ 6% +167.9% 30411 ~ 4% TOTAL numa-meminfo.node1.SReclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 62873 ~ 2% +60.7% 101060 ~ 2% lkp-sbx04/will-it-scale/open1 53665 ~ 2% +288.3% 208395 ~ 1% lkp-sbx04/will-it-scale/unlink2 116538 ~ 2% +165.5% 309456 ~ 1% TOTAL numa-meminfo.node0.Slab acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 195370 ~ 0% +62.8% 318033 ~ 1% lkp-sbx04/will-it-scale/open1 161158 ~ 0% +258.0% 576939 ~ 1% lkp-sbx04/will-it-scale/unlink2 356528 ~ 0% +151.0% 894972 ~ 1% TOTAL meminfo.Slab acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 28175 ~ 2% +78.7% 50339 ~ 4% lkp-sbx04/will-it-scale/open1 22550 ~10% +211.4% 70229 ~ 5% lkp-sbx04/will-it-scale/unlink2 50725 ~ 6% +137.7% 120568 ~ 5% TOTAL numa-meminfo.node3.SUnreclaim acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 7070 ~ 3% +77.8% 12570 ~ 4% lkp-sbx04/will-it-scale/open1 5633 ~10% +211.2% 17532 ~ 5% lkp-sbx04/will-it-scale/unlink2 12704 ~ 6% +137.0% 30102 ~ 5% TOTAL numa-vmstat.node3.nr_slab_unreclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 48838 ~ 1% +132.0% 113319 ~ 1% lkp-sbx04/will-it-scale/unlink2 48838 ~ 1% +132.0% 113319 ~ 1% TOTAL meminfo.SReclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 12200 ~ 1% +132.1% 28313 ~ 1% lkp-sbx04/will-it-scale/unlink2 12200 ~ 1% +132.1% 28313 ~ 1% TOTAL proc-vmstat.nr_slab_reclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 39455 ~ 5% +58.3% 62461 ~ 3% lkp-sbx04/will-it-scale/open1 33103 ~10% +172.9% 90331 ~ 3% lkp-sbx04/will-it-scale/unlink2 72559 ~ 7% +110.6% 152793 ~ 3% TOTAL numa-meminfo.node3.Slab acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 43199 ~ 8% +57.6% 68080 ~ 4% lkp-sbx04/will-it-scale/open1 35542 ~ 7% +224.5% 115339 ~ 2% lkp-sbx04/will-it-scale/unlink2 31726 ~ 7% +15.3% 36592 ~12% lkp-wsx01/will-it-scale/futex2 110469 ~ 7% +99.2% 220012 ~ 4% TOTAL numa-meminfo.node2.Slab acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 12710 ~12% +97.9% 25157 ~ 5% lkp-sbx04/will-it-scale/unlink2 12710 ~12% +97.9% 25157 ~ 5% TOTAL numa-meminfo.node2.SReclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 3179 ~11% +97.5% 6279 ~ 5% lkp-sbx04/will-it-scale/unlink2 3179 ~11% +97.5% 6279 ~ 5% TOTAL numa-vmstat.node2.nr_slab_reclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 10553 ~ 9% +90.5% 20102 ~ 6% lkp-sbx04/will-it-scale/unlink2 10553 ~ 9% +90.5% 20102 ~ 6% TOTAL numa-meminfo.node3.SReclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 2644 ~10% +89.9% 5020 ~ 6% lkp-sbx04/will-it-scale/unlink2 2644 ~10% +89.9% 5020 ~ 6% TOTAL numa-vmstat.node3.nr_slab_reclaimable acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 6034 ~26% +16.1% 7008 ~22% lkp-sbx04/will-it-scale/open1 6034 ~26% +16.1% 7008 ~22% TOTAL numa-vmstat.node2.nr_active_file acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 24139 ~26% +16.1% 28033 ~22% lkp-sbx04/will-it-scale/open1 24139 ~26% +16.1% 28033 ~22% TOTAL numa-meminfo.node2.Active(file) acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 0.55 ~35% +94.2% 1.08 ~14% lkp-sbx04/will-it-scale/unlink2 0.55 ~35% +94.2% 1.08 ~14% TOTAL perf-profile.cpu-cycles.rcu_nocb_kthread.kthread.ret_from_fork acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 498234 ~ 1% -35.9% 319244 ~ 1% lkp-sbx04/will-it-scale/open1 425531 ~ 2% -39.8% 256020 ~ 2% lkp-sbx04/will-it-scale/unlink2 923765 ~ 2% -37.7% 575264 ~ 2% TOTAL cpuidle.C7-SNB.usage acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 327 ~ 9% -26.2% 241 ~21% lkp-nex05/will-it-scale/lock1 327 ~ 9% -26.2% 241 ~21% TOTAL slabinfo.blkdev_ioc.num_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 327 ~ 9% -26.2% 241 ~21% lkp-nex05/will-it-scale/lock1 327 ~ 9% -26.2% 241 ~21% TOTAL slabinfo.blkdev_ioc.active_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 4608661 ~ 5% +15.0% 5300401 ~ 3% lkp-sbx04/will-it-scale/open1 631679 ~ 4% +64.1% 1036539 ~ 1% lkp-sbx04/will-it-scale/unlink2 5240340 ~ 5% +20.9% 6336941 ~ 3% TOTAL numa-numastat.node2.numa_hit acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 4606166 ~ 5% +15.0% 5298738 ~ 3% lkp-sbx04/will-it-scale/open1 630014 ~ 4% +64.4% 1035707 ~ 1% lkp-sbx04/will-it-scale/unlink2 5236180 ~ 5% +21.0% 6334445 ~ 3% TOTAL numa-numastat.node2.local_node acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 6319649 ~ 2% +11.6% 7054325 ~ 3% lkp-sbx04/will-it-scale/open1 1017618 ~ 3% +59.6% 1624227 ~ 1% lkp-sbx04/will-it-scale/unlink2 7337268 ~ 3% +18.3% 8678552 ~ 2% TOTAL numa-numastat.node1.local_node acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 6323803 ~ 2% +11.6% 7058478 ~ 3% lkp-sbx04/will-it-scale/open1 1021772 ~ 3% +59.4% 1628381 ~ 1% lkp-sbx04/will-it-scale/unlink2 7345576 ~ 3% +18.3% 8686859 ~ 2% TOTAL numa-numastat.node1.numa_hit acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 3533020 ~ 7% +16.2% 4106277 ~ 3% lkp-sbx04/will-it-scale/open1 529616 ~ 6% +59.8% 846268 ~ 2% lkp-sbx04/will-it-scale/unlink2 4062636 ~ 7% +21.9% 4952546 ~ 3% TOTAL numa-numastat.node3.local_node acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 3534685 ~ 7% +16.2% 4108772 ~ 3% lkp-sbx04/will-it-scale/open1 532111 ~ 6% +59.7% 849592 ~ 2% lkp-sbx04/will-it-scale/unlink2 4066797 ~ 7% +21.9% 4958364 ~ 3% TOTAL numa-numastat.node3.numa_hit acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 699767 ~ 4% +30.0% 909550 ~ 2% lkp-sbx04/will-it-scale/unlink2 699767 ~ 4% +30.0% 909550 ~ 2% TOTAL numa-vmstat.node1.numa_local acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 710327 ~ 4% +29.5% 920095 ~ 2% lkp-sbx04/will-it-scale/unlink2 710327 ~ 4% +29.5% 920095 ~ 2% TOTAL numa-vmstat.node1.numa_hit acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 355465 ~ 3% +32.2% 469857 ~ 1% lkp-sbx04/will-it-scale/unlink2 355465 ~ 3% +32.2% 469857 ~ 1% TOTAL numa-vmstat.node2.numa_local acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 401800 ~ 0% +30.8% 525635 ~ 1% lkp-sbx04/will-it-scale/unlink2 401800 ~ 0% +30.8% 525635 ~ 1% TOTAL numa-meminfo.node1.MemUsed acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 330376 ~ 1% +11.7% 369194 ~ 1% lkp-sbx04/will-it-scale/open1 327252 ~ 0% +47.0% 480920 ~ 1% lkp-sbx04/will-it-scale/unlink2 657628 ~ 0% +29.3% 850114 ~ 1% TOTAL numa-meminfo.node0.MemUsed acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 395008 ~ 2% +28.8% 508797 ~ 1% lkp-sbx04/will-it-scale/unlink2 395008 ~ 2% +28.8% 508797 ~ 1% TOTAL numa-vmstat.node2.numa_hit acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 84008013 ~ 4% +12.5% 94488610 ~ 1% lkp-sbx04/will-it-scale/open1 20904484 ~ 1% +35.9% 28407692 ~ 0% lkp-sbx04/will-it-scale/unlink2 104912497 ~ 3% +17.1% 122896302 ~ 1% TOTAL proc-vmstat.pgalloc_normal acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 20 ~19% +69.3% 34 ~32% lkp-sbx04/will-it-scale/unlink2 20 ~19% +69.3% 34 ~32% TOTAL cpuidle.C6-SNB.usage acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 90818481 ~ 4% +12.2% 1.019e+08 ~ 1% lkp-sbx04/will-it-scale/open1 24507722 ~ 1% +32.8% 32552022 ~ 0% lkp-sbx04/will-it-scale/unlink2 1.153e+08 ~ 3% +16.6% 1.344e+08 ~ 1% TOTAL proc-vmstat.pgfree acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 23331601 ~ 4% +11.8% 26096052 ~ 1% lkp-sbx04/will-it-scale/open1 7360836 ~ 1% +29.1% 9500981 ~ 0% lkp-sbx04/will-it-scale/unlink2 30692438 ~ 3% +16.0% 35597034 ~ 1% TOTAL proc-vmstat.numa_local acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 23344069 ~ 4% +11.8% 26108517 ~ 1% lkp-sbx04/will-it-scale/open1 7373303 ~ 1% +29.0% 9513445 ~ 0% lkp-sbx04/will-it-scale/unlink2 30717373 ~ 3% +16.0% 35621962 ~ 1% TOTAL proc-vmstat.numa_hit acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 293077 ~ 3% +9.2% 320181 ~ 3% lkp-sbx04/will-it-scale/open1 289901 ~ 3% +29.0% 374077 ~ 2% lkp-sbx04/will-it-scale/unlink2 582978 ~ 3% +19.1% 694258 ~ 2% TOTAL numa-meminfo.node2.MemUsed acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 1.34 ~10% -18.2% 1.10 ~ 6% lkp-sbx04/will-it-scale/open1 1.34 ~10% -18.2% 1.10 ~ 6% TOTAL perf-profile.cpu-cycles.task_work_add.filp_close.__close_fd.sys_close.system_call_fastpath acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 310408 ~ 3% +17.2% 363768 ~ 4% lkp-sbx04/will-it-scale/unlink2 310408 ~ 3% +17.2% 363768 ~ 4% TOTAL numa-vmstat.node3.numa_local acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 278872 ~ 3% +18.9% 331653 ~ 2% lkp-sbx04/will-it-scale/unlink2 278872 ~ 3% +18.9% 331653 ~ 2% TOTAL numa-meminfo.node3.MemUsed acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 1.83 ~ 3% +17.5% 2.15 ~ 3% nhm4/will-it-scale/read1 1.83 ~ 3% +17.5% 2.15 ~ 3% TOTAL perf-profile.cpu-cycles.find_lock_entry.shmem_getpage_gfp.shmem_file_read_iter.new_sync_read.vfs_read acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 350441 ~ 3% +15.4% 404433 ~ 4% lkp-sbx04/will-it-scale/unlink2 350441 ~ 3% +15.4% 404433 ~ 4% TOTAL numa-vmstat.node3.numa_hit acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 11130 ~ 1% +18.7% 13216 ~ 2% lkp-nex05/will-it-scale/lock1 13337 ~ 2% +15.2% 15360 ~ 4% lkp-sbx04/will-it-scale/unlink2 12236 ~ 1% +16.4% 14247 ~ 1% lkp-wsx01/will-it-scale/futex2 36704 ~ 2% +16.7% 42823 ~ 3% TOTAL slabinfo.kmalloc-192.num_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 11130 ~ 1% +18.6% 13206 ~ 2% lkp-nex05/will-it-scale/lock1 13337 ~ 2% +14.8% 15306 ~ 4% lkp-sbx04/will-it-scale/unlink2 12236 ~ 1% +16.4% 14247 ~ 1% lkp-wsx01/will-it-scale/futex2 36704 ~ 2% +16.5% 42760 ~ 3% TOTAL slabinfo.kmalloc-192.active_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 6819069 ~ 3% +8.6% 7407793 ~ 2% lkp-sbx04/will-it-scale/open1 3615190 ~ 1% +15.2% 4164246 ~ 0% lkp-sbx04/will-it-scale/unlink2 10434260 ~ 2% +10.9% 11572039 ~ 1% TOTAL proc-vmstat.pgalloc_dma32 acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 8856248 ~ 3% +8.6% 9619086 ~ 2% lkp-sbx04/will-it-scale/open1 5216071 ~ 2% +14.6% 5979211 ~ 0% lkp-sbx04/will-it-scale/unlink2 14072319 ~ 2% +10.8% 15598298 ~ 1% TOTAL numa-numastat.node0.local_node acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 8860401 ~ 3% +8.6% 9623240 ~ 2% lkp-sbx04/will-it-scale/open1 5220224 ~ 2% +14.6% 5983365 ~ 0% lkp-sbx04/will-it-scale/unlink2 14080626 ~ 2% +10.8% 15606605 ~ 1% TOTAL numa-numastat.node0.numa_hit acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 4865 ~ 2% +13.5% 5524 ~ 6% lkp-sbx04/will-it-scale/open1 4865 ~ 2% +13.5% 5524 ~ 6% TOTAL cpuidle.C1-SNB.usage acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 2231 ~ 5% +9.1% 2434 ~ 7% lkp-sbx04/will-it-scale/unlink2 2231 ~ 5% +9.1% 2434 ~ 7% TOTAL numa-meminfo.node3.KernelStack acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 2438 ~ 2% +10.7% 2700 ~ 1% lkp-nex05/will-it-scale/lock1 2438 ~ 2% +10.7% 2700 ~ 1% TOTAL slabinfo.signal_cache.num_objs acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 17183 ~ 1% +131.6% 39791 ~ 0% lkp-nex05/will-it-scale/lock1 67122 ~ 3% -18.0% 55048 ~ 0% lkp-sbx04/will-it-scale/open1 67648 ~ 6% -18.5% 55135 ~ 0% lkp-sbx04/will-it-scale/unlink2 21242 ~ 0% +99.3% 42326 ~ 0% lkp-wsx01/will-it-scale/futex2 6224 ~ 3% +52.1% 9468 ~ 2% nhm4/will-it-scale/read1 179420 ~ 4% +12.5% 201771 ~ 0% TOTAL time.involuntary_context_switches acf426994c75e38 0acd7c39a85836d90451b6c27 --------------- ------------------------- 1054 ~ 1% +19.4% 1258 ~ 1% lkp-nex05/will-it-scale/lock1 4445 ~ 1% -40.5% 2645 ~ 0% lkp-sbx04/will-it-scale/open1 3861 ~ 0% -55.5% 1717 ~ 1% lkp-sbx04/will-it-scale/unlink2 1142 ~ 1% +15.4% 1318 ~ 1% lkp-wsx01/will-it-scale/futex2 527 ~ 1% +18.1% 622 ~ 1% nhm4/will-it-scale/read1 11030 ~ 1% -31.4% 7562 ~ 1% TOTAL vmstat.system.cs Legend: ~XX% - stddev percent [+-]XX% - change percent time.involuntary_context_switches 75000 *+--*----------------*----------------------------------------------+ | : + | | *...*.. : + * | 70000 ++ *... : + + + | | * *...*.. + + .* | | *...* + .. | 65000 ++ * | | | 60000 ++ | | | | | 55000 O+ O O O O O O O O O O O O O O O O O O | O | | | 50000 ++------------------------------------------------------------------+ vmstat.system.cs 6000 ++-------------------------------------------------------------------+ | | 5500 *+..*..*...*...*..*...*..*... | | *. | 5000 ++ .. | | | 4500 ++ *..*...*...*.. | | * | 4000 ++ | | | 3500 ++ | | | 3000 ++ | | O O O O O O O O O O O O 2500 O+-----O---O------O---O---------------------O------O------O----------+ [*] 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, Fengguang

7 years, 11 months

2
1
0 / 0

[rcu] 34577530114: +247.4% qperf.tcp.bw, -3.3% turbostat.Pkg_W

by Fengguang Wu

Hi Paul, We are pleased to notice huge throughput increases in the qperf/iperf tests, together with noticeable reduce of power consumption! git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/dev commit 34577530114e9b1de10f3aa9665bb28c8ce585ba ("rcu: Bind grace-period kthreads to non-NO_HZ_FULL CPUs") 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 8.23e+08 ~ 6% +247.4% 2.859e+09 ~ 0% bens/qperf/600s 8.23e+08 ~ 6% +247.4% 2.859e+09 ~ 0% TOTAL qperf.tcp.bw 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 7.065e+09 ~ 3% +210.0% 2.19e+10 ~ 8% bens/iperf/300s-tcp 7.065e+09 ~ 3% +210.0% 2.19e+10 ~ 8% TOTAL iperf.tcp.sender.bps 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 7.065e+09 ~ 3% +210.0% 2.19e+10 ~ 8% bens/iperf/300s-tcp 7.065e+09 ~ 3% +210.0% 2.19e+10 ~ 8% TOTAL iperf.tcp.receiver.bps 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 7.718e+08 ~ 3% +177.8% 2.144e+09 ~ 1% bens/qperf/600s 7.718e+08 ~ 3% +177.8% 2.144e+09 ~ 1% TOTAL qperf.udp.recv_bw 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 7.745e+08 ~ 3% +177.0% 2.145e+09 ~ 1% bens/qperf/600s 7.745e+08 ~ 3% +177.0% 2.145e+09 ~ 1% TOTAL qperf.udp.send_bw 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 1.65e+09 ~ 1% +4.3% 1.721e+09 ~ 0% bens/qperf/600s 1.65e+09 ~ 1% +4.3% 1.721e+09 ~ 0% TOTAL qperf.sctp.bw 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 13579 ~ 1% -2.3% 13264 ~ 1% bens/qperf/600s 13579 ~ 1% -2.3% 13264 ~ 1% TOTAL qperf.sctp.latency 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 8545 ~ 0% +1.9% 8705 ~ 0% bens/qperf/600s 8545 ~ 0% +1.9% 8705 ~ 0% TOTAL qperf.udp.latency 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 12770 ~ 0% -1.0% 12637 ~ 0% ivb43/netperf/300s-25%-TCP_CRR 12770 ~ 0% -1.0% 12637 ~ 0% TOTAL netperf.Throughput_tps 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 1015 ~ 2% -92.1% 80 ~24% ivb43/netperf/300s-25%-TCP_CRR 1015 ~ 2% -92.1% 80 ~24% TOTAL cpuidle.POLL.usage 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 104620 ~31% -83.2% 17544 ~11% ivb43/netperf/300s-25%-TCP_CRR 104620 ~31% -83.2% 17544 ~11% TOTAL numa-vmstat.node1.numa_other 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 0.12 ~ 7% -73.3% 0.03 ~12% ivb43/netperf/300s-25%-TCP_CRR 0.12 ~ 7% -73.3% 0.03 ~12% TOTAL turbostat.%c3 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 53226067 ~ 3% -78.2% 11579930 ~14% ivb43/netperf/300s-25%-TCP_CRR 3327687 ~28% +86.6% 6208767 ~42% ivb44/pigz/25%-128K 56553754 ~ 4% -68.5% 17788697 ~24% TOTAL cpuidle.C1E-IVT.time 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 878601 ~ 3% -75.2% 217607 ~12% ivb43/netperf/300s-25%-TCP_CRR 9282 ~27% +99.2% 18495 ~49% ivb44/pigz/25%-128K 887884 ~ 4% -73.4% 236102 ~15% TOTAL cpuidle.C1E-IVT.usage 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 28174239 ~ 6% -61.0% 10981001 ~ 8% ivb43/netperf/300s-25%-TCP_CRR 28174239 ~ 6% -61.0% 10981001 ~ 8% TOTAL cpuidle.C3-IVT.time 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 237 ~20% +141.1% 572 ~ 9% xbm/pigz/25%-512K 237 ~20% +141.1% 572 ~ 9% TOTAL cpuidle.C3-SNB.usage 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 8192746 ~ 3% +202.8% 24806641 ~ 7% bens/iperf/300s-tcp 15458478 ~ 1% +69.2% 26148854 ~ 0% bens/qperf/600s 23651225 ~ 2% +115.4% 50955496 ~ 4% TOTAL proc-vmstat.numa_hit 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 8192746 ~ 3% +202.8% 24806641 ~ 7% bens/iperf/300s-tcp 15458478 ~ 1% +69.2% 26148854 ~ 0% bens/qperf/600s 23651225 ~ 2% +115.4% 50955496 ~ 4% TOTAL proc-vmstat.numa_local 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 63502648 ~ 3% +209.1% 1.963e+08 ~ 8% bens/iperf/300s-tcp 2.191e+08 ~ 1% +55.9% 3.416e+08 ~ 0% bens/qperf/600s 2.826e+08 ~ 2% +90.3% 5.379e+08 ~ 3% TOTAL proc-vmstat.pgfree 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 15752293 ~ 3% +209.0% 48677753 ~ 8% bens/iperf/300s-tcp 54168455 ~ 1% +56.0% 84483873 ~ 0% bens/qperf/600s 69920749 ~ 2% +90.4% 133161627 ~ 3% TOTAL proc-vmstat.pgalloc_normal 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 9737163 ~ 2% -56.7% 4213811 ~ 6% ivb43/netperf/300s-25%-TCP_CRR 9737163 ~ 2% -56.7% 4213811 ~ 6% TOTAL cpuidle.C6-IVT.usage 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 5033341 ~ 3% +192.9% 14743041 ~12% bens/iperf/300s-tcp 21147143 ~ 0% +30.9% 27679992 ~ 0% bens/qperf/600s 26180485 ~ 1% +62.0% 42423033 ~ 4% TOTAL softirqs.NET_RX 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 0.45 ~37% +109.7% 0.95 ~34% bens/qperf/600s 0.45 ~37% +109.7% 0.95 ~34% TOTAL perf-profile.cpu-cycles.copy_user_generic_string.skb_copy_datagram_iovec.tcp_recvmsg.inet_recvmsg.sock_aio_read 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 87907 ~29% +145.9% 216127 ~27% xbm/pigz/25%-512K 87907 ~29% +145.9% 216127 ~27% TOTAL cpuidle.C3-SNB.time 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 646521 ~ 7% -49.5% 326622 ~ 9% ivb43/netperf/300s-25%-TCP_CRR 646521 ~ 7% -49.5% 326622 ~ 9% TOTAL cpuidle.C3-IVT.usage 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 658 ~13% +109.3% 1377 ~11% xbm/pigz/25%-512K 658 ~13% +109.3% 1377 ~11% TOTAL cpuidle.C1E-SNB.usage 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 47748828 ~ 3% +209.2% 1.476e+08 ~ 8% bens/iperf/300s-tcp 1.65e+08 ~ 1% +55.9% 2.571e+08 ~ 0% bens/qperf/600s 2741315 ~ 3% +7.4% 2943780 ~ 5% ivb43/netperf/300s-25%-TCP_CRR 2.155e+08 ~ 2% +89.2% 4.077e+08 ~ 3% TOTAL proc-vmstat.pgalloc_dma32 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 2.826e+08 ~ 9% -31.4% 1.938e+08 ~16% lkp-sb03/nuttcp/300s 2.826e+08 ~ 9% -31.4% 1.938e+08 ~16% TOTAL cpuidle.C1-SNB.time 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 47008 ~ 4% +52.7% 71784 ~ 4% bens/qperf/600s 20704 ~ 4% +49.2% 30899 ~ 3% xbm/pigz/25%-512K 67712 ~ 4% +51.6% 102683 ~ 4% TOTAL softirqs.RCU 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 8643 ~ 7% -32.8% 5805 ~ 1% ivb43/netperf/300s-25%-TCP_CRR 8643 ~ 7% -32.8% 5805 ~ 1% TOTAL proc-vmstat.numa_hint_faults 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 8949 ~ 7% -31.5% 6129 ~ 1% ivb43/netperf/300s-25%-TCP_CRR 8949 ~ 7% -31.5% 6129 ~ 1% TOTAL proc-vmstat.numa_pte_updates 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 29.25 ~ 0% +41.8% 41.49 ~ 1% ivb43/netperf/300s-25%-TCP_CRR 29.25 ~ 0% +41.8% 41.49 ~ 1% TOTAL turbostat.%c6 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 486 ~ 6% -26.3% 358 ~ 8% ivb43/netperf/300s-25%-TCP_CRR 524 ~ 9% -24.4% 396 ~ 6% ivb44/pigz/25%-128K 486 ~ 6% -31.6% 332 ~ 7% lkp-sb03/nuttcp/300s 1497 ~ 7% -27.4% 1088 ~ 7% TOTAL slabinfo.kmem_cache.num_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 486 ~ 6% -26.3% 358 ~ 8% ivb43/netperf/300s-25%-TCP_CRR 524 ~ 9% -24.4% 396 ~ 6% ivb44/pigz/25%-128K 486 ~ 6% -31.6% 332 ~ 7% lkp-sb03/nuttcp/300s 1497 ~ 7% -27.4% 1088 ~ 7% TOTAL slabinfo.kmem_cache.active_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 7914 ~ 6% -29.6% 5575 ~ 1% ivb43/netperf/300s-25%-TCP_CRR 7914 ~ 6% -29.6% 5575 ~ 1% TOTAL proc-vmstat.numa_hint_faults_local 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 37.08 ~ 0% -34.3% 24.36 ~ 2% ivb43/netperf/300s-25%-TCP_CRR 12.48 ~ 3% -13.8% 10.76 ~ 6% lkp-sb03/nuttcp/300s 49.56 ~ 1% -29.2% 35.11 ~ 3% TOTAL turbostat.%c1 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 596 ~ 5% -21.5% 468 ~ 6% ivb43/netperf/300s-25%-TCP_CRR 634 ~ 7% -20.2% 506 ~ 5% ivb44/pigz/25%-128K 596 ~ 5% -25.8% 442 ~ 5% lkp-sb03/nuttcp/300s 1827 ~ 6% -22.4% 1418 ~ 5% TOTAL slabinfo.kmem_cache_node.active_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 98347 ~ 1% +66.0% 163290 ~ 9% bens/iperf/300s-tcp 263164 ~ 0% +15.4% 303781 ~ 1% bens/qperf/600s 181866 ~ 3% -15.0% 154551 ~ 7% ivb44/pigz/25%-128K 16865 ~ 1% +14.6% 19322 ~ 4% xbm/pigz/25%-512K 560243 ~ 1% +14.4% 640945 ~ 5% TOTAL softirqs.SCHED 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 614 ~ 5% -20.8% 486 ~ 6% ivb43/netperf/300s-25%-TCP_CRR 652 ~ 7% -19.6% 524 ~ 4% ivb44/pigz/25%-128K 614 ~ 5% -25.0% 460 ~ 5% lkp-sb03/nuttcp/300s 1881 ~ 5% -21.8% 1472 ~ 5% TOTAL slabinfo.kmem_cache_node.num_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 1.05 ~ 6% -20.1% 0.84 ~ 5% bens/qperf/600s 1.05 ~ 6% -20.1% 0.84 ~ 5% TOTAL perf-profile.cpu-cycles.tcp_rcv_established.tcp_v4_do_rcv.tcp_prequeue_process.tcp_recvmsg.inet_recvmsg 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 10097 ~ 0% +26.7% 12797 ~ 2% bens/qperf/600s 10097 ~ 0% +26.7% 12797 ~ 2% TOTAL softirqs.HRTIMER 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 0.78 ~ 3% +22.5% 0.96 ~ 3% bens/qperf/600s 0.78 ~ 3% +22.5% 0.96 ~ 3% TOTAL perf-profile.cpu-cycles.tcp_v4_rcv.ip_local_deliver_finish.ip_local_deliver.ip_rcv_finish.ip_rcv 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 2.835e+09 ~ 0% -16.5% 2.368e+09 ~ 0% ivb43/netperf/300s-25%-TCP_CRR 2.835e+09 ~ 0% -16.5% 2.368e+09 ~ 0% TOTAL cpuidle.C1-IVT.time 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 5915033 ~13% +14.3% 6761676 ~ 7% ivb43/netperf/300s-25%-TCP_CRR 5915033 ~13% +14.3% 6761676 ~ 7% TOTAL meminfo.DirectMap2M 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 264559 ~ 0% +15.6% 305707 ~ 0% bens/iperf/300s-tcp 264559 ~ 0% +15.6% 305707 ~ 0% TOTAL softirqs.TIMER 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 92365 ~ 3% -12.9% 80487 ~ 9% ivb44/pigz/25%-128K 92365 ~ 3% -12.9% 80487 ~ 9% TOTAL meminfo.DirectMap4k 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 24143956 ~ 3% -8.1% 22198708 ~ 5% ivb43/netperf/300s-25%-TCP_CRR 24143956 ~ 3% -8.1% 22198708 ~ 5% TOTAL numa-numastat.node1.numa_hit 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 24140149 ~ 3% -8.1% 22196166 ~ 5% ivb43/netperf/300s-25%-TCP_CRR 24140149 ~ 3% -8.1% 22196166 ~ 5% TOTAL numa-numastat.node1.local_node 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 12512229 ~ 3% -7.6% 11556940 ~ 6% ivb43/netperf/300s-25%-TCP_CRR 12512229 ~ 3% -7.6% 11556940 ~ 6% TOTAL numa-vmstat.node1.numa_hit 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 12407607 ~ 3% -7.0% 11539395 ~ 6% ivb43/netperf/300s-25%-TCP_CRR 12407607 ~ 3% -7.0% 11539395 ~ 6% TOTAL numa-vmstat.node1.numa_local 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 25536237 ~ 3% +6.8% 27272147 ~ 5% ivb43/netperf/300s-25%-TCP_CRR 25536237 ~ 3% +6.8% 27272147 ~ 5% TOTAL numa-numastat.node0.local_node 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 25538777 ~ 3% +6.8% 27275952 ~ 5% ivb43/netperf/300s-25%-TCP_CRR 25538777 ~ 3% +6.8% 27275952 ~ 5% TOTAL numa-numastat.node0.numa_hit 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 1159 ~ 3% -10.9% 1033 ~ 1% xbm/pigz/25%-512K 1159 ~ 3% -10.9% 1033 ~ 1% TOTAL slabinfo.kmalloc-96.num_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 1159 ~ 3% -10.9% 1033 ~ 1% xbm/pigz/25%-512K 1159 ~ 3% -10.9% 1033 ~ 1% TOTAL slabinfo.kmalloc-96.active_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 1.33 ~ 2% -10.5% 1.19 ~ 3% bens/qperf/600s 1.33 ~ 2% -10.5% 1.19 ~ 3% TOTAL perf-profile.cpu-cycles.tcp_sendmsg.inet_sendmsg.sock_aio_write.do_sync_write.vfs_write 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 1126 ~ 1% -9.7% 1017 ~ 1% bens/iperf/300s-tcp 1126 ~ 1% -9.7% 1017 ~ 1% TOTAL proc-vmstat.pgactivate 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 12269 ~ 4% +5.5% 12946 ~ 4% ivb43/netperf/300s-25%-TCP_CRR 12269 ~ 4% +5.5% 12946 ~ 4% TOTAL slabinfo.kmalloc-192.num_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 12258 ~ 4% +5.6% 12946 ~ 4% ivb43/netperf/300s-25%-TCP_CRR 12258 ~ 4% +5.6% 12946 ~ 4% TOTAL slabinfo.kmalloc-192.active_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 1.16 ~ 4% +9.2% 1.26 ~ 3% ivb43/netperf/300s-25%-TCP_CRR 1.16 ~ 4% +9.2% 1.26 ~ 3% TOTAL perf-profile.cpu-cycles.get_next_timer_interrupt.tick_nohz_stop_sched_tick.__tick_nohz_idle_enter.tick_nohz_idle_enter.cpu_idle_loop 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 3135 ~ 2% +8.4% 3398 ~ 1% ivb44/pigz/25%-128K 3135 ~ 2% +8.4% 3398 ~ 1% TOTAL slabinfo.task_xstate.active_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 3135 ~ 2% +8.4% 3398 ~ 1% ivb44/pigz/25%-128K 3135 ~ 2% +8.4% 3398 ~ 1% TOTAL slabinfo.task_xstate.num_objs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 11496 ~ 5% -96.2% 435 ~12% bens/iperf/300s-tcp 23777 ~ 1% -86.3% 3264 ~10% bens/qperf/600s 22961 ~ 1% -76.7% 5351 ~ 4% ivb44/pigz/25%-128K 13976 ~ 2% -97.5% 349 ~22% lkp-sb03/nuttcp/300s 11345 ~ 0% -88.0% 1361 ~25% xbm/pigz/25%-512K 83555 ~ 2% -87.1% 10761 ~ 9% TOTAL time.involuntary_context_switches 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 36820683 ~ 0% +17.5% 43253042 ~ 0% bens/qperf/600s 36820683 ~ 0% +17.5% 43253042 ~ 0% TOTAL time.voluntary_context_switches 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 13302 ~ 0% +49.0% 19817 ~14% bens/iperf/300s-tcp 62977 ~ 0% +17.3% 73856 ~ 0% bens/qperf/600s 76279 ~ 0% +22.8% 93674 ~ 3% TOTAL vmstat.system.in 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 23681 ~ 0% +48.9% 35273 ~15% bens/iperf/300s-tcp 122654 ~ 0% +17.4% 143989 ~ 0% bens/qperf/600s 759769 ~ 0% -10.5% 680088 ~ 0% ivb43/netperf/300s-25%-TCP_CRR 906105 ~ 0% -5.2% 859351 ~ 1% TOTAL vmstat.system.cs 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 144 ~ 0% +5.4% 152 ~ 0% bens/qperf/600s 144 ~ 0% +5.4% 152 ~ 0% TOTAL time.percent_of_cpu_this_job_got 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 122 ~ 0% -4.2% 116 ~ 0% ivb43/netperf/300s-25%-TCP_CRR ~ 0% -4.2% ~ 0% TOTAL turbostat.Cor_W 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 299 ~ 0% -2.8% 290 ~ 2% bens/iperf/300s-tcp 863 ~ 0% +5.2% 908 ~ 0% bens/qperf/600s 1162 ~ 0% +3.2% 1199 ~ 0% TOTAL time.system_time 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 153 ~ 0% -3.3% 147 ~ 0% ivb43/netperf/300s-25%-TCP_CRR ~ 0% -3.3% ~ 0% TOTAL turbostat.Pkg_W 221031cb1b33258 34577530114e9b1de10f3aa96 --------------- ------------------------- 33.55 ~ 0% +1.7% 34.12 ~ 0% ivb43/netperf/300s-25%-TCP_CRR 33.55 ~ 0% +1.7% 34.12 ~ 0% TOTAL turbostat.%c0 Legend: ~XX% - stddev percent [+-]XX% - change percent iperf.tcp.sender.bps 2.4e+10 ++----------O--------------------------------------O--------------+ O O O O O O O O O O O O O O | 2.2e+10 ++ O O O | 2e+10 ++ | | O | 1.8e+10 ++ | 1.6e+10 ++ | | | 1.4e+10 ++ | 1.2e+10 ++ | | | 1e+10 ++ | 8e+09 ++ | *..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..* 6e+09 ++----------------------------------------------------------------+ iperf.tcp.receiver.bps 2.4e+10 ++----------O--------------------------------------O--------------+ O O O O O O O O O O O O O O | 2.2e+10 ++ O O O | 2e+10 ++ | | O | 1.8e+10 ++ | 1.6e+10 ++ | | | 1.4e+10 ++ | 1.2e+10 ++ | | | 1e+10 ++ | 8e+09 ++ | *..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..* 6e+09 ++----------------------------------------------------------------+ time.involuntary_context_switches 14000 ++------------------------------------------------------------------+ | | 12000 *+. .*.. ..*..*..*..*.. .*..*..*..*..*.. ..*..*..*..*.. * | .*..*. *. *. *. ..| 10000 ++ *. * | | | 8000 ++ | | | 6000 ++ | | | 4000 ++ | | | 2000 ++ | | O O | 0 O+-O-----O--O--O---O--O--O--O--O--O--O--O--O--O------O--O--O--------+ [*] 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, Fengguang

7 years, 11 months

2
1
0 / 0

[block] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028

by Fengguang Wu

Tejun, In commit 09571194a9846177bea3afd18458312546112702 ("block, blk-mq: draining can't be skipped even if bypass_depth was non-zero") +------------------------------------------------------+------------+------------+ | | f5372ab3d2 | 09571194a9 | +------------------------------------------------------+------------+------------+ | boot_successes | 25 | 19 | | early-boot-hang | 1 | | | boot_failures | 0 | 6 | | BUG:kernel_test_crashed | 0 | 1 | | BUG:unable_to_handle_kernel_NULL_pointer_dereference | 0 | 5 | | Oops | 0 | 5 | | RIP:blk_throtl_drain | 0 | 5 | | kernel_BUG_at_arch/x86/mm/pageattr.c | 0 | 5 | | invalid_opcode | 0 | 5 | | RIP:change_page_attr_set_clr | 0 | 5 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 5 | | backtrace:scsi_debug_exit | 0 | 5 | | backtrace:SyS_delete_module | 0 | 5 | +------------------------------------------------------+------------+------------+ [ 5703.793032] sda: unknown partition table [ 5703.798102] sd 2:0:0:0: [sda] Attached SCSI disk [ 5706.076059] sd 2:0:0:0: [sda] Synchronizing SCSI cache [ 5706.078586] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 5706.079351] IP: [<ffffffff813cdbb0>] blk_throtl_drain+0x30/0x150 [ 5706.079351] PGD 0 [ 5706.079351] Oops: 0000 [#1] SMP [ 5706.079351] Modules linked in: sd_mod scsi_debug(-) crct10dif_generic crc_t10dif crct10dif_common loop dm_mod fuse sg sr_mod cdrom ata_generic pata_acpi parport_pc parport snd_pcm floppy cirrus syscopyarea sysfillrect sysimgblt ttm drm_kms_helper snd_timer snd soundcore drm pcspkr ata_piix libata i2c_piix4 [ 5706.079351] CPU: 3 PID: 22026 Comm: rmmod Not tainted 3.16.0-rc1-wl-00737-g114249b #1 [ 5706.079351] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5706.079351] task: ffff8801155f1d80 ti: ffff880100e9c000 task.ti: ffff880100e9c000 [ 5706.079351] RIP: 0010:[<ffffffff813cdbb0>] [<ffffffff813cdbb0>] blk_throtl_drain+0x30/0x150 [ 5706.079351] RSP: 0018:ffff880100e9fb60 EFLAGS: 00010046 [ 5706.079351] RAX: 0000000000000000 RBX: ffff88007f8b2eb0 RCX: ffff8800974c77a0 [ 5706.079351] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 5706.079351] RBP: ffff880100e9fb78 R08: 0000000000000000 R09: 0000000000000046 [ 5706.079351] R10: ffff880100e9fb78 R11: 0000000000000000 R12: ffff88007f8b2eb0 [ 5706.079351] R13: ffff8800863ef300 R14: ffff88007f8b3508 R15: ffff88008a3c2120 [ 5706.079351] FS: 00007fac6a962700(0000) GS:ffff88011fd80000(0000) knlGS:0000000000000000 [ 5706.079351] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 5706.079351] CR2: 0000000000000028 CR3: 0000000110261000 CR4: 00000000000006e0 [ 5706.079351] Stack: [ 5706.079351] ffff88007f8b2eb0 0000000000000000 ffff88007f8b3518 ffff880100e9fb88 [ 5706.079351] ffffffff813cabee ffff880100e9fbb8 ffffffff813afcec ffff88007f8b2eb0 [ 5706.079351] ffffffff81cf8760 ffff88007f8b2eb0 ffff88008a3c2000 ffff880100e9fbd0 [ 5706.079351] Call Trace: [ 5706.079351] [<ffffffff813cabee>] blkcg_drain_queue+0xe/0x10 [ 5706.079351] [<ffffffff813afcec>] __blk_drain_queue+0x7c/0x180 [ 5706.079351] [<ffffffff813afe7e>] blk_queue_bypass_start+0x8e/0xd0 [ 5706.079351] [<ffffffff813c9d98>] blkcg_deactivate_policy+0x38/0x140 [ 5706.079351] [<ffffffff813cde04>] blk_throtl_exit+0x34/0x50 [ 5706.079351] [<ffffffff813cac38>] blkcg_exit_queue+0x48/0x70 [ 5706.079351] [<ffffffff813b3546>] blk_release_queue+0x26/0x100 [ 5706.079351] [<ffffffff813dbd17>] kobject_cleanup+0x77/0x1b0 [ 5706.079351] [<ffffffff813dbbc8>] kobject_put+0x28/0x60 [ 5706.079351] [<ffffffff813acb85>] blk_put_queue+0x15/0x20 [ 5706.079351] [<ffffffff8151ed0b>] scsi_device_dev_release_usercontext+0xbb/0x120 [ 5706.079351] [<ffffffff810876c7>] execute_in_process_context+0x67/0x70 [ 5706.079351] [<ffffffff8151ec4c>] scsi_device_dev_release+0x1c/0x20 [ 5706.079351] [<ffffffff814ddc02>] device_release+0x32/0xa0 [ 5706.079351] [<ffffffff813dbd17>] kobject_cleanup+0x77/0x1b0 [ 5706.079351] [<ffffffff813dbbc8>] kobject_put+0x28/0x60 [ 5706.079351] [<ffffffff814ddef7>] put_device+0x17/0x20 [ 5706.079351] [<ffffffff8151f759>] __scsi_remove_device+0xa9/0xe0 [ 5706.079351] [<ffffffff8151dd04>] scsi_forget_host+0x64/0x70 [ 5706.079351] [<ffffffff81512207>] scsi_remove_host+0x77/0x120 [ 5706.079351] [<ffffffffa01c75a9>] sdebug_driver_remove+0x29/0x90 [scsi_debug] [ 5706.079351] [<ffffffff814e218f>] __device_release_driver+0x7f/0xf0 [ 5706.079351] [<ffffffff814e2223>] device_release_driver+0x23/0x30 [ 5706.079351] [<ffffffff814e1b28>] bus_remove_device+0x108/0x180 [ 5706.079351] [<ffffffff814de429>] device_del+0x129/0x1c0 [ 5706.079351] [<ffffffff814de4de>] device_unregister+0x1e/0x60 [ 5706.079351] [<ffffffffa01c6efc>] sdebug_remove_adapter+0x4c/0x70 [scsi_debug] [ 5706.079351] [<ffffffffa01cb52d>] scsi_debug_exit+0x19/0xaec [scsi_debug] [ 5706.079351] [<ffffffff810ea4fe>] SyS_delete_module+0x12e/0x1c0 [ 5706.079351] [<ffffffff818363a2>] ? int_signal+0x12/0x17 [ 5706.079351] [<ffffffff818360e9>] system_call_fastpath+0x16/0x1b [ 5706.079351] Code: 55 65 ff 04 25 a0 c7 00 00 48 89 e5 41 55 41 54 49 89 fc 53 4c 8b af 40 07 00 00 49 8b 85 a0 00 00 00 31 ff 48 8b 80 c8 05 00 00 <48> 8b 70 28 e8 f7 9b d2 ff 48 85 c0 48 89 c3 74 61 0f 1f 80 00 [ 5706.079351] RIP [<ffffffff813cdbb0>] blk_throtl_drain+0x30/0x150 [ 5706.079351] RSP <ffff880100e9fb60> [ 5706.079351] CR2: 0000000000000028 [ 5706.079351] ------------[ cut here ]------------ Thanks, Fengguang

7 years, 11 months

1
0
0 / 0

[cpufreq] kernel BUG at kernel/irq_work.c:175!

by Fengguang Wu

FYI, we find similar bug message in Viresh's tree, which contains 8 cpufreq patches based on next-20140625. tree: git://git.linaro.org/people/vireshk/linux cpufreq/cpu0-exynos head: d51c9fbdf49983fc3303ec576d02e8ef97da3d8b commit: d51c9fbdf49983fc3303ec576d02e8ef97da3d8b [8/8] cpufreq: cpu0: Add support for multiple 'struct cpufreq_policy' instances +-----------------------------------------------------------------------------+-----------+---------------+------------+ | | v3.16-rc2 | next-20140625 | d51c9fbdf4 | +-----------------------------------------------------------------------------+-----------+---------------+------------+ | boot_successes | 3 | 3 | 1 | | boot_failures | 0 | 0 | 2 | | kernel_BUG_at_kernel/irq_work.c | 0 | 0 | 2 | | invalid_opcode | 0 | 0 | 2 | | RIP:irq_work_run | 0 | 0 | 2 | | BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c | 0 | 0 | 2 | | backtrace:smpboot_thread_fn | 0 | 0 | 2 | +-----------------------------------------------------------------------------+-----------+---------------+------------+ mount.nfs: access denied by server while mounting bee:/nfsroot/trinity run-parts: /etc/kernel-tests/99-trinity exited with return code 32 [ 66.841357] ------------[ cut here ]------------ [ 66.841772] kernel BUG at kernel/irq_work.c:175! [ 66.842302] invalid opcode: 0000 [#1] SMP [ 66.842686] Modules linked in: [ 66.842969] CPU: 1 PID: 10 Comm: migration/1 Not tainted 3.16.0-rc2-next-20140625-00008-gd51c9fb #6 [ 66.843747] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 66.844010] task: ffff88001eb75e60 ti: ffff88001e03c000 task.ti: ffff88001e03c000 [ 66.844010] RIP: 0010:[<ffffffff811820fd>] [<ffffffff811820fd>] irq_work_run+0xf/0x22 [ 66.844010] RSP: 0018:ffff88001e03fcc0 EFLAGS: 00010046 [ 66.844010] RAX: 0000000080000001 RBX: 0000000000000000 RCX: 0000000000000005 [ 66.844010] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000000 [ 66.844010] RBP: ffff88001e03fce0 R08: 0000000000000200 R09: ffffffff82137030 [ 66.844010] R10: 0000000000001c24 R11: 0000000000007c00 R12: ffff88001fd13940 [ 66.844010] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff82073270 [ 66.844010] FS: 0000000000000000(0000) GS:ffff88001fd00000(0000) knlGS:0000000000000000 [ 66.844010] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 66.844010] CR2: 00007f10054a6000 CR3: 0000000000030000 CR4: 00000000000006e0 [ 66.844010] Stack: [ 66.844010] ffffffff811412f7 0000000000000001 ffff88001fd13980 ffffffff82055fb0 [ 66.844010] ffff88001e03fd00 ffffffff811413ea 0000000000000001 00000000fffffff0 [ 66.844010] ffff88001e03fd48 ffffffff81105027 0000000000000001 0000000000000008 [ 66.844010] Call Trace: [ 66.844010] [<ffffffff811412f7>] ? flush_smp_call_function_queue+0xab/0x10e [ 66.844010] [<ffffffff811413ea>] hotplug_cfd+0x90/0x97 [ 66.844010] [<ffffffff81105027>] notifier_call_chain+0x6d/0x93 [ 66.844010] [<ffffffff811050c5>] __raw_notifier_call_chain+0xe/0x10 [ 66.844010] [<ffffffff810e5408>] __cpu_notify+0x20/0x37 [ 66.844010] [<ffffffff810e5432>] cpu_notify+0x13/0x15 [ 66.844010] [<ffffffff819bd4ab>] take_cpu_down+0x27/0x3a [ 66.844010] [<ffffffff81155737>] multi_cpu_stop+0x93/0xed [ 66.844010] [<ffffffff811556a4>] ? cpu_stop_park+0x63/0x63 [ 66.844010] [<ffffffff811559b3>] cpu_stopper_thread+0x92/0x114 [ 66.844010] [<ffffffff819d1e64>] ? retint_restore_args+0x13/0x13 [ 66.844010] [<ffffffff819d0bbf>] ? _raw_spin_lock_irqsave+0x25/0x56 [ 66.844010] [<ffffffff81107069>] smpboot_thread_fn+0x187/0x1a5 [ 66.844010] [<ffffffff81106ee2>] ? SyS_setgroups+0x10c/0x10c [ 66.844010] [<ffffffff81101627>] kthread+0xdb/0xe3 [ 66.844010] [<ffffffff8110154c>] ? kthread_create_on_node+0x174/0x174 [ 66.844010] [<ffffffff819d127c>] ret_from_fork+0x7c/0xb0 [ 66.844010] [<ffffffff8110154c>] ? kthread_create_on_node+0x174/0x174 [ 66.844010] Code: cd 81 e8 dc 31 f6 ff c6 05 46 c3 f8 00 01 eb 05 e8 91 ff ff ff b8 01 00 00 00 5d c3 65 8b 04 25 50 b9 00 00 a9 00 00 0f 00 75 02 <0f> 0b 55 48 89 e5 e8 70 ff ff ff 5d c3 55 48 89 e5 5d c3 55 48 [ 66.844010] RIP [<ffffffff811820fd>] irq_work_run+0xf/0x22 [ 66.844010] RSP <ffff88001e03fcc0> [ 66.844010] ---[ end trace 043717361af3ed47 ]--- [ 66.844010] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:41 Thanks, Fengguang

7 years, 11 months

2
2
0 / 0

[migration] kernel BUG at kernel/irq_work.c:175!

by Fengguang Wu

Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 68c90b2c635f18ad51ae7440162f6c082ea1288d Merge: f08af6f ec11f8c Author: Stephen Rothwell <sfr(a)canb.auug.org.au> AuthorDate: Mon Jun 23 14:12:48 2014 +1000 Merge branch 'akpm-current/current' +---------------------------------+------------+------------+------------+---------------+ | | f08af6fa87 | ec11f8c81f | 68c90b2c63 | next-20140623 | +---------------------------------+------------+------------+------------+---------------+ | boot_successes | 60 | 60 | 0 | 0 | | boot_failures | 0 | 0 | 20 | 13 | | kernel_BUG_at_kernel/irq_work.c | 0 | 0 | 20 | 13 | | invalid_opcode | 0 | 0 | 20 | 13 | | RIP:irq_work_run | 0 | 0 | 20 | 13 | | backtrace:smpboot_thread_fn | 0 | 0 | 20 | 13 | +---------------------------------+------------+------------+------------+---------------+ [ 2.194744] EDD information not available. [ 2.195290] Unregister pv shared memory for cpu 0 [ 2.206025] ------------[ cut here ]------------ [ 2.206025] kernel BUG at kernel/irq_work.c:175! [ 2.206025] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC [ 2.206025] CPU: 0 PID: 9 Comm: migration/0 Not tainted 3.16.0-rc2-02039-g68c90b2 #1 [ 2.206025] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.206025] task: ffff88001219a7e0 ti: ffff8800121a4000 task.ti: ffff8800121a4000 [ 2.206025] RIP: 0010:[<ffffffff810f9318>] [<ffffffff810f9318>] irq_work_run+0xf/0x1c [ 2.206025] RSP: 0000:ffff8800121a7c48 EFLAGS: 00010046 [ 2.206025] RAX: 0000000080000001 RBX: 0000000000000000 RCX: 0000000000000005 [ 2.206025] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 [ 2.206025] RBP: ffff8800121a7c68 R08: 0000000000000002 R09: 0000000000000001 [ 2.206025] R10: ffffffff810e2a10 R11: ffffffff810b9de3 R12: ffff880012412340 [ 2.206025] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff81c83e50 [ 2.206025] FS: 0000000000000000(0000) GS:ffff880012400000(0000) knlGS:0000000000000000 [ 2.206025] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 2.206025] CR2: 0000000000000000 CR3: 0000000001c0c000 CR4: 00000000000006b0 [ 2.206025] Stack: [ 2.206025] ffffffff810e87e0 ffff880012412380 00000000fffffff0 ffffffff81c81ba0 [ 2.206025] ffff8800121a7c88 ffffffff810e88f0 0000000000000001 00000000fffffff0 [ 2.206025] ffff8800121a7cd0 ffffffff810b6e23 0000000000000000 0000000000000008 [ 2.206025] Call Trace: [ 2.206025] [<ffffffff810e87e0>] ? flush_smp_call_function_queue+0xa4/0x107 [ 2.206025] [<ffffffff810e88f0>] hotplug_cfd+0xad/0xbb [ 2.206025] [<ffffffff810b6e23>] notifier_call_chain+0x68/0x8e [ 2.206025] [<ffffffff810b70c0>] __raw_notifier_call_chain+0x9/0xb [ 2.206025] [<ffffffff8109b39e>] __cpu_notify+0x1b/0x32 [ 2.206025] [<ffffffff8109b3c3>] cpu_notify+0xe/0x10 [ 2.206025] [<ffffffff817e2817>] take_cpu_down+0x22/0x35 [ 2.206025] [<ffffffff810f4153>] multi_cpu_stop+0x8c/0xe2 [ 2.206025] [<ffffffff810f40c7>] ? cpu_stopper_thread+0x126/0x126 [ 2.206025] [<ffffffff810f402e>] cpu_stopper_thread+0x8d/0x126 [ 2.206025] [<ffffffff810cdab4>] ? lock_acquire+0x94/0x9d [ 2.206025] [<ffffffff817f25af>] ? _raw_spin_unlock_irqrestore+0x40/0x55 [ 2.206025] [<ffffffff810cbdcd>] ? trace_hardirqs_on_caller+0x171/0x18d [ 2.206025] [<ffffffff817f25b7>] ? _raw_spin_unlock_irqrestore+0x48/0x55 [ 2.206025] [<ffffffff810b8e39>] smpboot_thread_fn+0x182/0x1a0 [ 2.206025] [<ffffffff810b8cb7>] ? in_egroup_p+0x2e/0x2e [ 2.206025] [<ffffffff810b372c>] kthread+0xcd/0xd5 [ 2.206025] [<ffffffff810b365f>] ? __kthread_parkme+0x5c/0x5c [ 2.206025] [<ffffffff817f2f3c>] ret_from_fork+0x7c/0xb0 [ 2.206025] [<ffffffff810b365f>] ? __kthread_parkme+0x5c/0x5c [ 2.206025] Code: 48 c7 c7 65 cd b0 81 e8 43 20 fa ff c6 05 50 e1 c9 00 01 eb 02 31 db 88 d8 5b 5d c3 65 8b 04 25 10 b8 00 00 a9 00 00 0f 00 75 02 <0f> 0b 55 48 89 e5 e8 b5 fd ff ff 5d c3 55 48 89 e5 53 48 89 fb [ 2.206025] RIP [<ffffffff810f9318>] irq_work_run+0xf/0x1c [ 2.206025] RSP <ffff8800121a7c48> [ 2.206025] ---[ end trace f7f1564c3a1f35d0 ]--- [ 2.206025] note: migration/0[9] exited with preempt_count 1 git bisect start 58ae500a03a6bf68eee323c342431bfdd3f460b6 f08af6fa87ea33262fe2fe5167119fb55ad9dd2c -- git bisect bad 68c90b2c635f18ad51ae7440162f6c082ea1288d # 14:19 0- 20 Merge branch 'akpm-current/current' git bisect good 6b11d02e25c79a8961983a966b7fafcdc36c7a91 # 14:23 20+ 0 slab: do not keep free objects/slabs on dead memcg caches git bisect good 11709212b3a5479fcc63dda3160f4f4b0251f914 # 14:27 20+ 0 mm/util.c: add kstrimdup() git bisect good 6af20930dcfcd13270de4f29f3830312f3c36a17 # 14:33 20+ 0 fork: reset mm->pinned_vm git bisect good 8e7c32fb574ec1b49fd0e451cb25febf51430dd9 # 14:38 20+ 0 fs/qnx6: use pr_fmt and __func__ in logging git bisect good 6873969c750b85734bc7d06be3c51ad381b3c85a # 14:41 20+ 0 shm: remove unneeded extern for function git bisect good 2b9ed79abc340e15bc9652048d2e8d8a283bd8a1 # 14:48 20+ 0 um: use asm-generic/scatterlist.h git bisect good ec11f8c81fbc76534c1374e29bdf36f085ed859a # 15:12 20+ 0 lib/scatterlist: clean up useless architecture versions of scatterlist.h # first bad commit: [68c90b2c635f18ad51ae7440162f6c082ea1288d] Merge branch 'akpm-current/current' git bisect good f08af6fa87ea33262fe2fe5167119fb55ad9dd2c # 15:14 60+ 0 Merge branch 'rd-docs/master' git bisect good ec11f8c81fbc76534c1374e29bdf36f085ed859a # 15:19 60+ 0 lib/scatterlist: clean up useless architecture versions of scatterlist.h git bisect bad 58ae500a03a6bf68eee323c342431bfdd3f460b6 # 15:19 0- 13 Add linux-next specific files for 20140623 git bisect good a497c3ba1d97fc69c1e78e7b96435ba8c2cb42ee # 15:25 60+ 0 Linux 3.16-rc2 git bisect bad 58ae500a03a6bf68eee323c342431bfdd3f460b6 # 15:25 0- 13 Add linux-next specific files for 20140623 This script may reproduce the error. ----------------------------------------------------------------------------- #!/bin/bash kernel=$1 initrd=quantal-core-x86_64.cgz wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/blob/master/initrd/$initrd kvm=( qemu-system-x86_64 -cpu kvm64 -enable-kvm -kernel $kernel -initrd $initrd -smp 2 -m 256M -net nic,vlan=0,macaddr=00:00:00:00:00:00,model=virtio -net user,vlan=0 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot -watchdog i6300esb -serial stdio -display none -monitor null ) append=( debug sched_debug apic=debug ignore_loglevel sysrq_always_enabled panic=10 prompt_ramdisk=0 earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw ) "${kvm[@]}" --append "${append[*]}" ----------------------------------------------------------------------------- Thanks, Fengguang

7 years, 11 months

2
1
0 / 0

[lockdep] BUG: 9 unexpected failures (out of 253) - debugging disabled!

by Fengguang Wu

Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/core commit b7e4888bad0c84db587a2beae72dcf1c40ec0e52 Author: Waiman Long <Waiman.Long(a)hp.com> AuthorDate: Mon Jun 23 14:25:00 2014 -0400 Commit: Peter Zijlstra <a.p.zijlstra(a)chello.nl> CommitDate: Tue Jun 24 16:39:40 2014 +0200 lockdep: restrict the use of recursive read_lock with qrwlock Unlike the original unfair rwlock implementation, queued rwlock will grant lock according to the chronological sequence of the lock requests except when the lock requester is in the interrupt context. Consequently, recursive read_lock calls will now hang the process if there is a write_lock call somewhere in between the read_lock calls. This patch updates the lockdep implementation to look for recursive read_lock calls when queued rwlock is being used. A new read state (3) is used to mark those read_lock call that cannot be recursively called except in the interrupt context. The new read state does exhaust the 2 bits available in held_lock:read bit field. The addition of any new read state in the future may require a redesign of how all those bits are squeezed together in the held_lock structure. Cc: Scott J Norton <scott.norton(a)hp.com> Cc: Ingo Molnar <mingo(a)kernel.org> Signed-off-by: Waiman Long <Waiman.Long(a)hp.com> Signed-off-by: Peter Zijlstra <peterz(a)infradead.org> Link: http://lkml.kernel.org/r/1403547900-40658-2-git-send-email-Waiman.Long@hp... +----------------------------------------------------+------------+------------+------------+ | | 6cc620bc8e | b7e4888bad | 5fe00a37f7 | +----------------------------------------------------+------------+------------+------------+ | boot_successes | 60 | 0 | 0 | | boot_failures | 0 | 20 | 13 | | BUG:unexpected_failures(out_of)-debugging_disabled | 0 | 20 | 13 | +----------------------------------------------------+------------+------------+------------+ [ 0.000000] -------------------------------------------------------------------------- [ 0.000000] A-A deadlock: ok | ok |FAILED| [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00024-gb7e4888 #12 [ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] 00000000 00000000 c1633f8c c141223b 00000001 c1633fb4 c141248b c159ffe8 [ 0.000000] c140fce6 00000000 00000004 00000002 c16bf390 00020800 c1844800 c1633fc8 [ 0.000000] c121fe62 c15a01b7 c15a01aa 00000780 c1633fe8 c1688a0d 000000ea ffffffff [ 0.000000] Call Trace: [ 0.000000] [<c141223b>] dump_stack+0x48/0x60 [ 0.000000] [<c141248b>] dotest+0x58/0x4bc [ 0.000000] [<c140fce6>] ? printk+0x38/0x3a [ 0.000000] [<c121fe62>] locking_selftest+0xd4/0x1ddb [ 0.000000] [<c1688a0d>] start_kernel+0x2e5/0x3a1 [ 0.000000] [<c16884c5>] ? set_init_arg+0x49/0x49 [ 0.000000] [<c16882af>] i386_start_kernel+0x79/0x7d [ 0.000000] ok | ok | ok | [ 0.000000] A-B-B-A deadlock: ok | ok |FAILED| [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00024-gb7e4888 #12 [ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] 00000000 00000000 c1633f8c c141223b 00000001 c1633fb4 c141248b c159ffe8 [ 0.000000] c140fce6 00000000 00000004 00000002 c16bf390 00020800 c1844800 c1633fc8 [ 0.000000] c121feeb c15a01b7 c15a01bd 00000780 c1633fe8 c1688a0d 000000ea ffffffff [ 0.000000] Call Trace: [ 0.000000] [<c141223b>] dump_stack+0x48/0x60 [ 0.000000] [<c141248b>] dotest+0x58/0x4bc [ 0.000000] [<c140fce6>] ? printk+0x38/0x3a [ 0.000000] [<c121feeb>] locking_selftest+0x15d/0x1ddb [ 0.000000] [<c1688a0d>] start_kernel+0x2e5/0x3a1 [ 0.000000] [<c16884c5>] ? set_init_arg+0x49/0x49 [ 0.000000] [<c16882af>] i386_start_kernel+0x79/0x7d [ 0.000000] ok | ok | ok | [ 0.000000] A-B-B-C-C-A deadlock: ok | ok |FAILED| [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00024-gb7e4888 #12 [ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] 00000000 00000000 c1633f8c c141223b 00000001 c1633fb4 c141248b c159ffe8 [ 0.000000] c140fce6 00000000 00000004 00000002 c16bf390 00020800 c1844800 c1633fc8 [ 0.000000] c121ff74 c15a01b7 c15a01ce 00000780 c1633fe8 c1688a0d 000000ea ffffffff [ 0.000000] Call Trace: [ 0.000000] [<c141223b>] dump_stack+0x48/0x60 [ 0.000000] [<c141248b>] dotest+0x58/0x4bc [ 0.000000] [<c140fce6>] ? printk+0x38/0x3a [ 0.000000] [<c121ff74>] locking_selftest+0x1e6/0x1ddb [ 0.000000] [<c1688a0d>] start_kernel+0x2e5/0x3a1 [ 0.000000] [<c16884c5>] ? set_init_arg+0x49/0x49 [ 0.000000] [<c16882af>] i386_start_kernel+0x79/0x7d [ 0.000000] ok | ok | ok | [ 0.000000] A-B-C-A-B-C deadlock: ok | ok |FAILED| [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00024-gb7e4888 #12 [ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] 00000000 00000000 c1633f8c c141223b 00000001 c1633fb4 c141248b c159ffe8 [ 0.000000] c140fce6 00000000 00000004 00000002 c16bf390 00020800 c1844800 c1633fc8 [ 0.000000] c121fffd c15a01b7 c15a01e3 00000780 c1633fe8 c1688a0d 000000ea ffffffff [ 0.000000] Call Trace: [ 0.000000] [<c141223b>] dump_stack+0x48/0x60 [ 0.000000] [<c141248b>] dotest+0x58/0x4bc [ 0.000000] [<c140fce6>] ? printk+0x38/0x3a [ 0.000000] [<c121fffd>] locking_selftest+0x26f/0x1ddb [ 0.000000] [<c1688a0d>] start_kernel+0x2e5/0x3a1 [ 0.000000] [<c16884c5>] ? set_init_arg+0x49/0x49 [ 0.000000] [<c16882af>] i386_start_kernel+0x79/0x7d [ 0.000000] ok | ok | ok | [ 0.000000] A-B-B-C-C-D-D-A deadlock: ok | ok |FAILED| [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00024-gb7e4888 #12 [ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] 00000000 00000000 c1633f8c c141223b 00000001 c1633fb4 c141248b c159ffe8 [ 0.000000] c140fce6 00000000 00000004 00000002 c16bf390 00020800 c1844800 c1633fc8 [ 0.000000] c1220086 c15a01b7 c15a01f8 00000780 c1633fe8 c1688a0d 000000ea ffffffff [ 0.000000] Call Trace: [ 0.000000] [<c141223b>] dump_stack+0x48/0x60 [ 0.000000] [<c141248b>] dotest+0x58/0x4bc [ 0.000000] [<c140fce6>] ? printk+0x38/0x3a [ 0.000000] [<c1220086>] locking_selftest+0x2f8/0x1ddb [ 0.000000] [<c1688a0d>] start_kernel+0x2e5/0x3a1 [ 0.000000] [<c16884c5>] ? set_init_arg+0x49/0x49 [ 0.000000] [<c16882af>] i386_start_kernel+0x79/0x7d [ 0.000000] ok | ok | ok | [ 0.000000] A-B-C-D-B-D-D-A deadlock: ok | ok |FAILED| [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00024-gb7e4888 #12 [ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] 00000000 00000000 c1633f8c c141223b 00000001 c1633fb4 c141248b c159ffe8 [ 0.000000] c140fce6 00000000 00000004 00000002 c16bf390 00020800 c1844800 c1633fc8 [ 0.000000] c122010f c15a01b7 c15a0211 00000780 c1633fe8 c1688a0d 000000ea ffffffff [ 0.000000] Call Trace: [ 0.000000] [<c141223b>] dump_stack+0x48/0x60 [ 0.000000] [<c141248b>] dotest+0x58/0x4bc [ 0.000000] [<c140fce6>] ? printk+0x38/0x3a [ 0.000000] [<c122010f>] locking_selftest+0x381/0x1ddb [ 0.000000] [<c1688a0d>] start_kernel+0x2e5/0x3a1 [ 0.000000] [<c16884c5>] ? set_init_arg+0x49/0x49 [ 0.000000] [<c16882af>] i386_start_kernel+0x79/0x7d [ 0.000000] ok | ok | ok | [ 0.000000] A-B-C-D-B-C-D-A deadlock: ok | ok |FAILED| [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00024-gb7e4888 #12 [ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.000000] 00000000 00000000 c1633f8c c141223b 00000001 c1633fb4 c141248b c159ffe8 [ 0.000000] c140fce6 00000000 00000004 00000002 c16bf390 00020800 c1844800 c1633fc8 [ 0.000000] c1220198 c15a01b7 c15a022a 00000780 c1633fe8 c1688a0d 000000ea ffffffff [ 0.000000] Call Trace: [ 0.000000] [<c141223b>] dump_stack+0x48/0x60 [ 0.000000] [<c141248b>] dotest+0x58/0x4bc [ 0.000000] [<c140fce6>] ? printk+0x38/0x3a [ 0.000000] [<c1220198>] locking_selftest+0x40a/0x1ddb [ 0.000000] [<c1688a0d>] start_kernel+0x2e5/0x3a1 [ 0.000000] [<c16884c5>] ? set_init_arg+0x49/0x49 [ 0.000000] [<c16882af>] i386_start_kernel+0x79/0x7d [ 0.000000] ok | ok | ok | [ 0.000000] double unlock: ok | ok | ok | ok | ok | ok | [ 0.000000] initialize held: ok | ok | ok | ok | ok | ok | git bisect start 5fe00a37f7eb81f306abdffbf4d7093da51b8ccc a497c3ba1d97fc69c1e78e7b96435ba8c2cb42ee -- git bisect bad f07035a109af7964e8446cb7ffc1721a1c2ce43c # 23:40 0- 20 Merge 'peterz-queue/locking/core' into devel-lkp-hsx01-i386-201406242318 git bisect good 4dda92923e85460ff9299b486176f09cc25ca104 # 23:56 20+ 0 Merge 'amirv/for-net' into devel-lkp-hsx01-i386-201406242318 git bisect good 5054910c90f25564062e9a1c78e4d37a51077955 # 00:18 20+ 0 Merge 'amirv/for-netdev' into devel-lkp-hsx01-i386-201406242318 git bisect good 88f2b4c15e561bb5c28709d666364f273bf54b98 # 00:51 20+ 0 rtmutex: Simplify rtmutex_slowtrylock() git bisect good a57594a13a446d1a6ab1dcd48339f799ce586843 # 01:01 20+ 0 rtmutex: Clarify the boost/deboost part git bisect good 6cc620bc8e9b521e61f04eefbec0c41c01fb03b9 # 01:09 20+ 0 rtmutex: Make the rtmutex tester depend on BROKEN git bisect bad b7e4888bad0c84db587a2beae72dcf1c40ec0e52 # 01:13 0- 20 lockdep: restrict the use of recursive read_lock with qrwlock # first bad commit: [b7e4888bad0c84db587a2beae72dcf1c40ec0e52] lockdep: restrict the use of recursive read_lock with qrwlock git bisect good 6cc620bc8e9b521e61f04eefbec0c41c01fb03b9 # 01:16 60+ 0 rtmutex: Make the rtmutex tester depend on BROKEN git bisect bad 5fe00a37f7eb81f306abdffbf4d7093da51b8ccc # 01:16 0- 13 0day head guard for 'devel-lkp-hsx01-i386-201406242318' git bisect good 8b8f5d9715845f9ae2b89ce406e71877965b29ca # 01:20 60+ 0 Merge tag 'compress-3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core git bisect good 3ab63dc6b2912b76632e34889ec26355096aaead # 01:21 60+ 63 Add linux-next specific files for 20140624 This script may reproduce the error. ----------------------------------------------------------------------------- #!/bin/bash kernel=$1 initrd=quantal-core-i386.cgz wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/blob/master/initrd/$initrd kvm=( qemu-system-x86_64 -cpu kvm64 -enable-kvm -kernel $kernel -initrd $initrd -smp 2 -m 256M -net nic,vlan=0,macaddr=00:00:00:00:00:00,model=virtio -net user,vlan=0 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot -watchdog i6300esb -serial stdio -display none -monitor null ) append=( debug sched_debug apic=debug ignore_loglevel sysrq_always_enabled panic=10 prompt_ramdisk=0 earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw ) "${kvm[@]}" --append "${append[*]}" ----------------------------------------------------------------------------- Thanks, Fengguang _______________________________________________ LKP mailing list LKP(a)linux.intel.com

7 years, 11 months

1
0
0 / 0

[regulator] BUG: kernel early hang without any printk output

by Fengguang Wu

Hi Mark, It seems this merge commit makes the kernel not 100% bootable. 5 out of 53 boots block w/o any dmesg output. git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next commit a920677c35627d1baac9776dfba0286e7a1e1f0f Merge: 3b9f3f3 ce44beb 03187c7 c969faa 53ddddc Author: Mark Brown <broonie(a)linaro.org> AuthorDate: Sun Jun 22 11:58:45 2014 +0100 Merge remote-tracking branches 'regulator/topic/88pm800', 'regulator/topic/ab8500', 'regulator/topic/bcm590xx' and 'regulator/topic/ltc3589' into regulator-next Attached dmesg for the parent commit, too, to help confirm whether it is a noise error. +------------------------------------------------------------+------------+------------+------------+------------+------------+------------+------------------+ | | 3b9f3f33ad | ce44beb7c0 | 03187c72db | c969faadf0 | 53ddddcad5 | a920677c35 | v3.16-rc2_062302 | +------------------------------------------------------------+------------+------------+------------+------------+------------+------------+------------------+ | boot_successes | 0 | 306 | 0 | 391 | 0 | 0 | 0 | | boot_failures | 408 | 0 | 306 | 17 | 408 | 102 | 53 | | genirq:Flags_mismatch_irq.(serial)vs.(goldfish_pdev_bus) | 408 | 0 | 306 | 0 | 408 | 96 | 48 | | WARNING:CPU:PID:at_kernel/events/core.c:perf_swevent_add() | 0 | 0 | 0 | 16 | | | | | WARNING:CPU:PID:at_mm/slab_common.c:kmalloc_slab() | 0 | 0 | 0 | 1 | | | | | backtrace:netlink_setsockopt | 0 | 0 | 0 | 1 | | | | | backtrace:SyS_setsockopt | 0 | 0 | 0 | 1 | | | | | backtrace:SyS_socketcall | 0 | 0 | 0 | 1 | | | | | BUG:kernel_early_hang_without_any_printk_output | 0 | 0 | 0 | 0 | 0 | 6 | 5 | +------------------------------------------------------------+------------+------------+------------+------------+------------+------------+------------------+ BUG: kernel early hang without any printk output Command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=10 softlockup_panic=1 nmi_watchdog=panic prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/i386-randconfig-c1-06230242/linux-devel:devel-hourly-2014062302:a920677c35627d1baac9776dfba0286e7a1e1f0f:bisect-linux4/.vmlinuz-a920677c35627d1baac9776dfba0286e7a1e1f0f-20140623053514-40-ivb42 branch=linux-devel/devel-hourly-2014062302 BOOT_IMAGE=/kernel/i386-randconfig-c1-06230242/a920677c35627d1baac9776dfba0286e7a1e1f0f/vmlinuz-3.16.0-rc1-00017-ga920677 drbd.minor_count=8 Early hang kernel: vmlinuz-3.16.0-rc1-00017-ga920677 3.16.0-rc1-00017-ga920677 #6 Elapsed time: 35 git bisect start 375e99ffd57ef530588f58288bc5fe39cf94cbae a497c3ba1d97fc69c1e78e7b96435ba8c2cb42ee -- git bisect good b3aa7a29807dac2dd7355ac97eb1462e97acf9e0 # 03:43 102+ 102 Merge 'rcu/dev.2014.06.19c' into devel-hourly-2014062302 git bisect bad 9e6424f1b56fc78818b92a5954fe8e37da497f32 # 04:05 0- 1 Merge 'regulator/for-next' into devel-hourly-2014062302 git bisect good e9ffadad61b2af6372be2e06802c0faeb5550250 # 04:26 102+ 102 Merge 'arm-jcooper/irqchip/urgent' into devel-hourly-2014062302 git bisect good 12318f8cc77eab9ca20188257664a2fc9f63a8a9 # 04:48 102+ 102 Merge 'arm-soc/for-next' into devel-hourly-2014062302 git bisect good 222980021ed94fe1201ad129ac7672cb7275ecec # 05:05 102+ 102 Merge 'spi/for-next' into devel-hourly-2014062302 git bisect good 3b9f3f33ad71b863673388f88cd2ba7df803e730 # 05:20 102+ 102 Merge remote-tracking branch 'regulator/topic/core' into regulator-next git bisect bad a920677c35627d1baac9776dfba0286e7a1e1f0f # 05:48 0- 1 Merge remote-tracking branches 'regulator/topic/88pm800', 'regulator/topic/ab8500', 'regulator/topic/bcm590xx' and 'regulator/topic/ltc3589' into regulator-next git bisect good c969faadf02076641a81197f2e8641c40d232edd # 06:07 102+ 3 regulator: bcm590xx: remove unnecessary OOM messages git bisect good ce44beb7c0b12d33ce88b396aeaea0ba4ca1bbfc # 06:29 102+ 0 regulator: 88pm800: remove duplicate PM800_BUCK3 define git bisect good 53ddddcad5a4fc41db3e2f16c22344d8da58cf74 # 06:44 102+ 102 regulator: ltc3589: Staticize ltc3589_reg_defaults # first bad commit: [a920677c35627d1baac9776dfba0286e7a1e1f0f] Merge remote-tracking branches 'regulator/topic/88pm800', 'regulator/topic/ab8500', 'regulator/topic/bcm590xx' and 'regulator/topic/ltc3589' into regulator-next git bisect good 3b9f3f33ad71b863673388f88cd2ba7df803e730 # 06:52 306+ 408 Merge remote-tracking branch 'regulator/topic/core' into regulator-next git bisect good ce44beb7c0b12d33ce88b396aeaea0ba4ca1bbfc # 06:57 306+ 0 regulator: 88pm800: remove duplicate PM800_BUCK3 define git bisect good 03187c72db60e20354aca6802bc5cc3e42c1d6e1 # 07:10 306+ 306 regulator: ab8500: Remove ab8500_regulator_debug_init/exit() git bisect good c969faadf02076641a81197f2e8641c40d232edd # 07:16 306+ 17 regulator: bcm590xx: remove unnecessary OOM messages git bisect good 53ddddcad5a4fc41db3e2f16c22344d8da58cf74 # 07:23 306+ 408 regulator: ltc3589: Staticize ltc3589_reg_defaults git bisect bad 375e99ffd57ef530588f58288bc5fe39cf94cbae # 07:23 0- 53 0day head guard for 'devel-hourly-2014062302' git bisect good a497c3ba1d97fc69c1e78e7b96435ba8c2cb42ee # 07:41 306+ 408 Linux 3.16-rc2 git bisect good 633594bb2d3890711a887897f2003f41735f0dfa # 08:08 306+ 306 Add linux-next specific files for 20140620 This script may reproduce the error. ----------------------------------------------------------------------------- #!/bin/bash kernel=$1 kvm=( qemu-system-x86_64 -cpu kvm64 -enable-kvm -kernel $kernel -smp 2 -m 256M -net nic,vlan=0,macaddr=00:00:00:00:00:00,model=virtio -net user,vlan=0 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot -watchdog i6300esb -serial stdio -display none -monitor null ) append=( debug sched_debug apic=debug ignore_loglevel sysrq_always_enabled panic=10 prompt_ramdisk=0 earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw ) "${kvm[@]}" --append "${append[*]}" ----------------------------------------------------------------------------- Thanks, Fengguang _______________________________________________ LKP mailing list LKP(a)linux.intel.com

7 years, 11 months

1
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0 / 0

[block, blk] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028

by Jet Chen

Hi Tejun, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git review-mq-percpu_ref commit c924ec35e72ce0d6c289b858d323f7eb3f5076a5 ("block, blk-mq: draining can't be skipped even if bypass_depth was non-zero") +------------------------------------------------------+------------+------------+ | | ea854572ee | c924ec35e7 | +------------------------------------------------------+------------+------------+ | boot_successes | 26 | 10 | | boot_failures | 0 | 6 | | BUG:unable_to_handle_kernel_NULL_pointer_dereference | 0 | 6 | | Oops | 0 | 6 | | RIP:blk_throtl_drain | 0 | 6 | | kernel_BUG_at_arch/x86/mm/pageattr.c | 0 | 6 | | invalid_opcode | 0 | 6 | | RIP:change_page_attr_set_clr | 0 | 6 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 6 | | backtrace:scsi_debug_exit | 0 | 6 | | backtrace:SyS_delete_module | 0 | 6 | +------------------------------------------------------+------------+------------+ [ 6254.898035] sda: unknown partition table [ 6254.903049] sd 2:0:0:0: [sda] Attached SCSI disk [ 6257.214012] sd 2:0:0:0: [sda] Synchronizing SCSI cache [ 6257.216452] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 6257.217194] IP: [<ffffffff813ceae0>] blk_throtl_drain+0x30/0x150 [ 6257.217194] PGD 0 [ 6257.217194] Oops: 0000 [#1] SMP [ 6257.217194] Modules linked in: sd_mod scsi_debug(-) crct10dif_generic crc_t10dif crct10dif_common loop dm_mod fuse sg sr_mod cdrom ata_generic pata_acpi parport_pc snd_pcm floppy parport snd_timer snd cirrus syscopyarea sysfillrect soundcore sysimgblt ata_piix ttm drm_kms_helper pcspkr i2c_piix4 libata drm [ 6257.217194] CPU: 2 PID: 28645 Comm: rmmod Not tainted 3.16.0-rc1-01107-ge1fff86 #1 [ 6257.217194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 6257.217194] task: ffff8801156c0000 ti: ffff88006af74000 task.ti: ffff88006af74000 [ 6257.217194] RIP: 0010:[<ffffffff813ceae0>] [<ffffffff813ceae0>] blk_throtl_drain+0x30/0x150 [ 6257.217194] RSP: 0018:ffff88006af77b60 EFLAGS: 00010046 [ 6257.217194] RAX: 0000000000000000 RBX: ffff88006aec0000 RCX: ffff880052240620 [ 6257.217194] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 6257.217194] RBP: ffff88006af77b78 R08: 0000000000000000 R09: 0000000000000046 [ 6257.240049] R10: ffff88006af77b78 R11: 0000000000000000 R12: ffff88006aec0000 [ 6257.240049] R13: ffff88007e093600 R14: ffff88006aec0658 R15: ffff88007eb8f120 [ 6257.240049] FS: 00007fbe3f39b700(0000) GS:ffff88011fd00000(0000) knlGS:0000000000000000 [ 6257.240049] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 6257.240049] CR2: 0000000000000028 CR3: 000000006aeaf000 CR4: 00000000000006e0 [ 6257.240049] Stack: [ 6257.240049] ffff88006aec0000 0000000000000000 ffff88006aec0668 ffff88006af77b88 [ 6257.240049] ffffffff813cbb1e ffff88006af77bb8 ffffffff813b0c1c ffff88006aec0000 [ 6257.240049] ffffffff81cf7940 ffff88006aec0000 ffff88007eb8f000 ffff88006af77bd0 [ 6257.240049] Call Trace: [ 6257.240049] [<ffffffff813cbb1e>] blkcg_drain_queue+0xe/0x10 [ 6257.240049] [<ffffffff813b0c1c>] __blk_drain_queue+0x7c/0x180 [ 6257.240049] [<ffffffff813b0dae>] blk_queue_bypass_start+0x8e/0xd0 [ 6257.240049] [<ffffffff813cacc8>] blkcg_deactivate_policy+0x38/0x140 [ 6257.240049] [<ffffffff813ced34>] blk_throtl_exit+0x34/0x50 [ 6257.240049] [<ffffffff813cbb68>] blkcg_exit_queue+0x48/0x70 [ 6257.240049] [<ffffffff813b4476>] blk_release_queue+0x26/0x100 [ 6257.240049] [<ffffffff813dcc47>] kobject_cleanup+0x77/0x1b0 [ 6257.240049] [<ffffffff813dcaf8>] kobject_put+0x28/0x60 [ 6257.240049] [<ffffffff813adab5>] blk_put_queue+0x15/0x20 [ 6257.240049] [<ffffffff8151d9cb>] scsi_device_dev_release_usercontext+0xbb/0x120 [ 6257.240049] [<ffffffff81087727>] execute_in_process_context+0x67/0x70 [ 6257.240049] [<ffffffff8151d90c>] scsi_device_dev_release+0x1c/0x20 [ 6257.240049] [<ffffffff814deda2>] device_release+0x32/0xa0 [ 6257.240049] [<ffffffff813dcc47>] kobject_cleanup+0x77/0x1b0 [ 6257.240049] [<ffffffff813dcaf8>] kobject_put+0x28/0x60 [ 6257.240049] [<ffffffff814df097>] put_device+0x17/0x20 [ 6257.240049] [<ffffffff8151e419>] __scsi_remove_device+0xa9/0xe0 [ 6257.240049] [<ffffffff8151c9c4>] scsi_forget_host+0x64/0x70 [ 6257.240049] [<ffffffff81510ec7>] scsi_remove_host+0x77/0x120 [ 6257.240049] [<ffffffffa01c25a9>] sdebug_driver_remove+0x29/0x90 [scsi_debug] [ 6257.240049] [<ffffffff814e332f>] __device_release_driver+0x7f/0xf0 [ 6257.240049] [<ffffffff814e33c3>] device_release_driver+0x23/0x30 [ 6257.240049] [<ffffffff814e2cc8>] bus_remove_device+0x108/0x180 [ 6257.240049] [<ffffffff814df5c9>] device_del+0x129/0x1c0 [ 6257.240049] [<ffffffff814df67e>] device_unregister+0x1e/0x60 [ 6257.240049] [<ffffffffa01c1efc>] sdebug_remove_adapter+0x4c/0x70 [scsi_debug] [ 6257.240049] [<ffffffffa01c652d>] scsi_debug_exit+0x19/0xaec [scsi_debug] [ 6257.240049] [<ffffffff810ea52e>] SyS_delete_module+0x12e/0x1c0 [ 6257.240049] [<ffffffff81835162>] ? int_signal+0x12/0x17 [ 6257.240049] [<ffffffff81834ea9>] system_call_fastpath+0x16/0x1b [ 6257.240049] Code: 55 65 ff 04 25 a0 c7 00 00 48 89 e5 41 55 41 54 49 89 fc 53 4c 8b af 40 07 00 00 49 8b 85 a0 00 00 00 31 ff 48 8b 80 c8 05 00 00 <48> 8b 70 28 e8 f7 8c d2 ff 48 85 c0 48 89 c3 74 61 0f 1f 80 00 [ 6257.240049] RIP [<ffffffff813ceae0>] blk_throtl_drain+0x30/0x150 [ 6257.240049] RSP <ffff88006af77b60> [ 6257.240049] CR2: 0000000000000028 [ 6257.240049] ------------[ cut here ]------------ 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, Jet

7 years, 11 months

2
1
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[memcontrol] WARNING: CPU: 0 PID: 1 at kernel/res_counter.c:28 res_counter_uncharge_locked()

by Fengguang Wu

Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit ddc5bfec501f4be3f9e89084c2db270c0c45d1d6 Author: Johannes Weiner <hannes(a)cmpxchg.org> AuthorDate: Fri Jun 20 10:27:58 2014 +1000 Commit: Stephen Rothwell <sfr(a)canb.auug.org.au> CommitDate: Fri Jun 20 10:27:58 2014 +1000 mm: memcontrol: rewrite uncharge API The memcg uncharging code that is involved towards the end of a page's lifetime - truncation, reclaim, swapout, migration - is impressively complicated and fragile. Because anonymous and file pages were always charged before they had their page->mapping established, uncharges had to happen when the page type could still be known from the context; as in unmap for anonymous, page cache removal for file and shmem pages, and swap cache truncation for swap pages. However, these operations happen well before the page is actually freed, and so a lot of synchronization is necessary: - Charging, uncharging, page migration, and charge migration all need to take a per-page bit spinlock as they could race with uncharging. - Swap cache truncation happens during both swap-in and swap-out, and possibly repeatedly before the page is actually freed. This means that the memcg swapout code is called from many contexts that make no sense and it has to figure out the direction from page state to make sure memory and memory+swap are always correctly charged. - On page migration, the old page might be unmapped but then reused, so memcg code has to prevent untimely uncharging in that case. Because this code - which should be a simple charge transfer - is so special-cased, it is not reusable for replace_page_cache(). But now that charged pages always have a page->mapping, introduce mem_cgroup_uncharge(), which is called after the final put_page(), when we know for sure that nobody is looking at the page anymore. For page migration, introduce mem_cgroup_migrate(), which is called after the migration is successful and the new page is fully rmapped. Because the old page is no longer uncharged after migration, prevent double charges by decoupling the page's memcg association (PCG_USED and pc->mem_cgroup) from the page holding an actual charge. The new bits PCG_MEM and PCG_MEMSW represent the respective charges and are transferred to the new page during migration. mem_cgroup_migrate() is suitable for replace_page_cache() as well, which gets rid of mem_cgroup_replace_page_cache(). Swap accounting is massively simplified: because the page is no longer uncharged as early as swap cache deletion, a new mem_cgroup_swapout() can transfer the page's memory+swap charge (PCG_MEMSW) to the swap entry before the final put_page() in page reclaim. Finally, page_cgroup changes are now protected by whatever protection the page itself offers: anonymous pages are charged under the page table lock, whereas page cache insertions, swapin, and migration hold the page lock. Uncharging happens under full exclusion with no outstanding references. Charging and uncharging also ensure that the page is off-LRU, which serializes against charge migration. Remove the very costly page_cgroup lock and set pc->flags non-atomically. Signed-off-by: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Michal Hocko <mhocko(a)suse.cz> Cc: Hugh Dickins <hughd(a)google.com> Cc: Tejun Heo <tj(a)kernel.org> Cc: Vladimir Davydov <vdavydov(a)parallels.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> +-----------------------------------------------------------------------+------------+------------+---------------+ | | 5b647620c6 | ddc5bfec50 | next-20140620 | +-----------------------------------------------------------------------+------------+------------+---------------+ | boot_successes | 60 | 0 | 0 | | boot_failures | 0 | 20 | 13 | | WARNING:CPU:PID:at_kernel/res_counter.c:res_counter_uncharge_locked() | 0 | 20 | 13 | | backtrace:vm_munmap | 0 | 20 | 13 | | backtrace:SyS_munmap | 0 | 20 | 13 | | backtrace:do_sys_open | 0 | 20 | 13 | | backtrace:SyS_open | 0 | 20 | 13 | | backtrace:do_execve | 0 | 20 | 13 | | backtrace:SyS_execve | 0 | 20 | 13 | | backtrace:do_group_exit | 0 | 20 | 13 | | backtrace:SyS_exit_group | 0 | 20 | 13 | | backtrace:SYSC_renameat2 | 0 | 11 | 8 | | backtrace:SyS_rename | 0 | 11 | 8 | | backtrace:do_munmap | 0 | 11 | 8 | | backtrace:SyS_brk | 0 | 11 | 8 | | Out_of_memory:Kill_process | 0 | 1 | | | backtrace:do_unlinkat | 0 | 9 | 5 | | backtrace:SyS_unlink | 0 | 9 | 5 | | backtrace:SYSC_umount | 0 | 9 | | | backtrace:SyS_umount | 0 | 9 | | | backtrace:cleanup_mnt_work | 0 | 0 | 5 | +-----------------------------------------------------------------------+------------+------------+---------------+ [ 2.747397] debug: unmapping init [mem 0xffff880001a3a000-0xffff880001bfffff] [ 2.748630] debug: unmapping init [mem 0xffff8800021ad000-0xffff8800021fffff] [ 2.752857] ------------[ cut here ]------------ [ 2.753355] WARNING: CPU: 0 PID: 1 at kernel/res_counter.c:28 res_counter_uncharge_locked+0x48/0x74() [ 2.753355] CPU: 0 PID: 1 Comm: init Not tainted 3.16.0-rc1-00238-gddc5bfe #1 [ 2.753355] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.753355] 0000000000000000 ffff880012073c50 ffffffff81a23b9d ffff880012073c88 [ 2.753355] ffffffff810bc765 ffffffff8111fac8 0000000000001000 ffff88001200fa50 [ 2.753355] 0000000000000001 ffff88001200fa01 ffff880012073c98 ffffffff810bc84b [ 2.753355] Call Trace: [ 2.753355] [<ffffffff81a23b9d>] dump_stack+0x19/0x1b [ 2.753355] [<ffffffff810bc765>] warn_slowpath_common+0x73/0x8c [ 2.753355] [<ffffffff8111fac8>] ? res_counter_uncharge_locked+0x48/0x74 [ 2.753355] [<ffffffff810bc84b>] warn_slowpath_null+0x1a/0x1c [ 2.753355] [<ffffffff8111fac8>] res_counter_uncharge_locked+0x48/0x74 [ 2.753355] [<ffffffff8111fd02>] res_counter_uncharge_until+0x4e/0xa9 [ 2.753355] [<ffffffff8111fd70>] res_counter_uncharge+0x13/0x15 [ 2.753355] [<ffffffff8119499c>] mem_cgroup_uncharge_end+0x73/0x8d [ 2.753355] [<ffffffff8115735e>] release_pages+0x1f2/0x20d [ 2.753355] [<ffffffff8116cc3a>] tlb_flush_mmu_free+0x28/0x43 [ 2.753355] [<ffffffff8116d5e5>] tlb_flush_mmu+0x20/0x23 [ 2.753355] [<ffffffff8116d5fc>] tlb_finish_mmu+0x14/0x39 [ 2.753355] [<ffffffff811730c1>] unmap_region+0xcd/0xdf [ 2.753355] [<ffffffff81172b0e>] ? vma_gap_callbacks_propagate+0x18/0x33 [ 2.753355] [<ffffffff81174bf1>] do_munmap+0x252/0x2e0 [ 2.753355] [<ffffffff81174cc3>] vm_munmap+0x44/0x5c [ 2.753355] [<ffffffff81174cfe>] SyS_munmap+0x23/0x29 [ 2.753355] [<ffffffff81a31567>] system_call_fastpath+0x16/0x1b [ 2.753355] ---[ end trace cfeb07101f6fbdfb ]--- [ 2.780913] ------------[ cut here ]------------ git bisect start 633594bb2d3890711a887897f2003f41735f0dfa 71d273fa769ea21f2422a18482e002a07ab9f8f3 -- git bisect bad df2c04c68831d13d505c127b5aa172361a17c7e3 # 14:51 0- 4 Revert "mm, CMA: change cma_declare_contiguous() to obey coding convention" git bisect bad dc8a26d69d2039a81985549b00fc7e7e2bd34dd4 # 14:58 0- 2 Merge branch 'akpm/master' git bisect bad fe297b4d6987d04e8b3878b3ee47efd26b95114d # 15:16 0- 8 Merge branch 'akpm-current/current' git bisect good 6b11d02e25c79a8961983a966b7fafcdc36c7a91 # 15:24 20+ 0 slab: do not keep free objects/slabs on dead memcg caches git bisect bad 11709212b3a5479fcc63dda3160f4f4b0251f914 # 16:02 0- 4 mm/util.c: add kstrimdup() git bisect good d070bd175fccaab0616d8aec75acbde480531fee # 16:11 20+ 0 mm: memcontrol: catch root bypass in move precharge git bisect bad e77f4c327c7aa19d2c9ea28ebeb3a7166db418ad # 16:27 0- 12 m68k: call find_vma with the mmap_sem held in sys_cacheflush() git bisect bad ddc5bfec501f4be3f9e89084c2db270c0c45d1d6 # 16:48 0- 1 mm: memcontrol: rewrite uncharge API git bisect good 737f5b9367a254a3b3149b3abae65470f5ed941e # 17:10 20+ 0 mm: memcontrol: do not acquire page_cgroup lock for kmem pages git bisect good 5b647620c6cae14cc27782c3491c2da0f1cf245c # 17:40 20+ 0 mm-memcontrol-rewrite-charge-api-fix # first bad commit: [ddc5bfec501f4be3f9e89084c2db270c0c45d1d6] mm: memcontrol: rewrite uncharge API git bisect good 5b647620c6cae14cc27782c3491c2da0f1cf245c # 17:43 60+ 0 mm-memcontrol-rewrite-charge-api-fix git bisect bad 633594bb2d3890711a887897f2003f41735f0dfa # 17:43 0- 13 Add linux-next specific files for 20140620 git bisect good 3c8fb50445833b93f69b6b703a29aae3523cad0c # 18:06 60+ 0 Merge tag 'pm+acpi-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm git bisect bad 633594bb2d3890711a887897f2003f41735f0dfa # 18:06 0- 13 Add linux-next specific files for 20140620 This script may reproduce the error. ----------------------------------------------------------------------------- #!/bin/bash kernel=$1 initrd=quantal-core-x86_64.cgz wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/blob/master/initrd/$initrd kvm=( qemu-system-x86_64 -cpu kvm64 -enable-kvm -kernel $kernel -initrd $initrd -smp 2 -m 256M -net nic,vlan=0,macaddr=00:00:00:00:00:00,model=virtio -net user,vlan=0 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot -watchdog i6300esb -serial stdio -display none -monitor null ) append=( debug sched_debug apic=debug ignore_loglevel sysrq_always_enabled panic=10 prompt_ramdisk=0 earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw ) "${kvm[@]}" --append "${append[*]}" ----------------------------------------------------------------------------- Thanks, Fengguang _______________________________________________ LKP mailing list LKP(a)linux.intel.com

7 years, 11 months

4
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0 / 0

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