Greeting, There is no primary kpi change in this test, below is the data collected through multiple monitors running background just for your information. commit: 9384ca4690ff7f2ef8dc0877c19c1fd5ae976907 ("btrfs: introduce priority based delalloc shrink mechanism") https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master in testcase: fsmark on test machine: 144 threads Intel(R) Xeon(R) CPU E7-8890 v3 @ 2.50GHz with 128G memory with following parameters: iterations: 1x nr_threads: 1t disk: 8BRD_12G md: RAID5 fs: btrfs filesize: 4M test_size: 60G sync_method: NoSync cpufreq_governor: performance test-description: The fsmark is a file system benchmark to test synchronous write workloads, for example, mail servers workload. test-url: https://sourceforge.net/projects/fsmark/ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml testcase/path_params/tbox_group/run: fsmark/1x-1t-8BRD_12G-RAID5-btrfs-4M-60G-NoSync-performance/lkp-hsx02 8a3863c2fab811c9 9384ca4690ff7f2ef8dc0877c1 ---------------- -------------------------- %stddev change %stddev \ | \ 19.21 ± 5% 318% 80.27 ± 4% fsmark.time.elapsed_time 19.21 ± 5% 318% 80.27 ± 4% fsmark.time.elapsed_time.max 191 ± 20% 1369% 2812 ± 5% fsmark.time.voluntary_context_switches 17.20 ± 6% 120% 37.88 ± 4% fsmark.time.system_time 60314560 109% 1.259e+08 fsmark.time.file_system_outputs 3130 ± 10% 46% 4575 fsmark.time.maximum_resident_set_size 89 ± 3% -48% 47 ± 6% fsmark.time.percent_of_cpu_this_job_got 1 -100% 0 fsmark.time.exit_status 34908 ± 4% 273% 130133 ± 6% interrupts.CAL:Function_call_interrupts 2.59 -9% 2.35 turbostat.%Busy 66 ± 3% -12% 58 turbostat.Avg_MHz 590644 ± 7% 12% 658845 ± 4% vmstat.io.bo 9820 ± 4% 311% 40401 vmstat.system.cs 1463 ± 4% 21% 1768 iostat.md0.avgrq-sz 579 ± 6% 19% 688 ± 4% iostat.md0.w/s 591780 ± 6% 11% 658190 ± 4% iostat.md0.wkB/s 202018 1548% 3328810 ± 3% perf-stat.context-switches 87504050 ± 16% 418% 4.533e+08 ± 4% perf-stat.node-load-misses 9683815 ± 35% 414% 49801393 ± 22% perf-stat.dTLB-store-misses 6869374 ± 6% 403% 34572047 ± 4% perf-stat.iTLB-loads 1.865e+08 ± 10% 378% 8.916e+08 ± 6% perf-stat.cache-misses 25084935 ± 26% 365% 1.166e+08 ± 6% perf-stat.node-store-misses 36873637 ± 13% 317% 1.536e+08 ± 18% perf-stat.node-loads 7.975e+08 ± 10% 314% 3.302e+09 perf-stat.cache-references 1532 ± 4% 272% 5693 ± 5% perf-stat.cpu-migrations 55736 ± 5% 262% 201512 ± 4% perf-stat.minor-faults 55866 ± 5% 261% 201515 ± 4% perf-stat.page-faults 1.555e+10 ± 7% 234% 5.201e+10 ± 4% perf-stat.dTLB-stores 45604981 ± 4% 223% 1.474e+08 perf-stat.branch-misses 572685 ± 22% 183% 1622509 ± 11% perf-stat.iTLB-load-misses 30138539 ± 9% 233% 1.004e+08 ± 4% perf-stat.node-stores 1.839e+11 ± 9% 252% 6.47e+11 perf-stat.cpu-cycles 2.638e+10 ± 9% 215% 8.316e+10 perf-stat.branch-instructions 1.914e+11 ± 10% 183% 5.417e+11 perf-stat.instructions 5.611e+10 ± 33% 121% 1.241e+11 ± 12% perf-stat.dTLB-loads 1.04 ± 3% -19% 0.84 perf-stat.ipc 7.68 ± 21% -42% 4.49 ± 11% perf-stat.iTLB-load-miss-rate% perf-stat.cpu-cycles 1.6e+12 ++-------------------------O--O-----------------------------------+ O | 1.4e+12 ++ O | 1.2e+12 ++ O O | |O O O | 1e+12 ++ | | O | 8e+11 ++ | | OO O O O OOOO O O O O O O | 6e+11 ++ O O O O | 4e+11 ++ | | | 2e+11 +*.* *. * * .* *. **. * * * *. * * .* *. *.* *.** * ** * *.***. :** :: ** * *. :*.* :: ** + :** :: ** ** | 0 ++--------------*-----*-----------*-----*------*-----*------------+ perf-stat.instructions 6e+11 ++------------------------------------------------------------------+ OO O O O O O OOO OOO O O O OO O O | 5e+11 ++ O OO O O O O O O | | | | | 4e+11 ++ | | | 3e+11 ++ | | | 2e+11 ++.* * * * * * **. *.*| ** :*.***. .* *. : * :*. ** * : * +: *. : * : ** * | * *** : : ** : :*.* * : :*.*: :** : : ** : :*.* | 1e+11 ++ :: : : : : :: :: : : | | : : : :: : : | 0 ++--------------*------*-----------*-----*------*------*------------+ perf-stat.cache-references 3.5e+09 ++--------------OOOO-O-O--O---------------------------------------+ OO OOOO OOO OOO O OO OOO | 3e+09 ++ O O | | O O | 2.5e+09 ++ | | | 2e+09 ++ | | | 1.5e+09 ++ | | | 1e+09 ++ *. .*| **.* * ***.* * ** .* *.* **.*** **. * *.* * ** .* *.* *.**** * 5e+08 ++ * * : : * : : * : : *: : * : : * : : * | | :: : :: : :: : | 0 ++--------------*-----*-----------*-----*------*-----*------------+ perf-stat.cache-misses 1.2e+09 ++----------------------------------------------------------------+ | | 1e+09 ++ O O O O O O | O O O O OO O O O | |O O O O O | 8e+08 ++ O O O O O O O | | OO | 6e+08 ++ | | | 4e+08 ++ | | | | | 2e+08 **.****.***.*** ***.* *.****.*** **.** *.*** ***.* *.***.****.** | + : :: + : :: + : :: | 0 ++--------------*-----*-----------*-----*------*-----*------------+ perf-stat.branch-instructions 9e+10 ++--------------O--O-O--O--O----------------------------------------+ OO OOO O O OOO O O O O OO OOO | 8e+10 ++ O O O | 7e+10 ++ O O | | | 6e+10 ++ | 5e+10 ++ | | | 4e+10 ++ | 3e+10 ++.* .*| ** : .***. .* *. * * **. ** * * * .* *. * * **. ** * 2e+10 ++ ** *** : : ** : :*.* * : :*.*: :** : : ** : :*.* * | 1e+10 ++ :: : : : : :: :: : : | | : : : :: : : | 0 ++--------------*------*-----------*-----*------*------*------------+ perf-stat.branch-misses 1.6e+08 ++--------------------------O--O----------------------------------+ | OOOO O O OO O O OOO | 1.4e+08 OO OO O OOO O O O O | 1.2e+08 ++ O O | | | 1e+08 ++ | | | 8e+07 ++ | | | 6e+07 ++ | 4e+07 +*.* *.** * .* *. **. * * * *. * * .* *. *.****.** * ** *.*** :** : : ** * * :*.*: : ** : :** : : ** | 2e+07 ++ : : :: : : :: : : :: | | :: : :: : : : | 0 ++--------------*-----*-----------*-----*------*-----*------------+ perf-stat.dTLB-stores 7e+10 ++------------------------------------------------------------------+ | O O | 6e+10 O+ O O O O O O | |O OOO OO OO O O O | 5e+10 ++ O O OO OO | | O O O | 4e+10 ++ | | | 3e+10 ++ | | | 2e+10 *+ .** * .* *. * *. * * *. * *.* | |*.*** *.* * : : *** :*.** *** :*.** :**.* : *** :*.** **.** 1e+10 ++ :: : : : : : : : : : : | | : :: :: :: : :: | 0 ++--------------*------*-----------*-----*------*------*------------+ perf-stat.iTLB-loads 4e+07 ++----------------------------------------------------------------+ O O OOO O O OO O O | 3.5e+07 +O O O O O O O O O O | 3e+07 ++ O O O O O | | O O | 2.5e+07 ++ O | | | 2e+07 ++ | | | 1.5e+07 ++ | 1e+07 ++ | | .*| 5e+06 **.****.***.*** ***.* *.****.*** **.** *.*** ***.* *.***.**** * | + : :: + : :: + : :: | 0 ++--------------*-----*-----------*-----*------*-----*------------+ perf-stat.iTLB-load-misses 7e+06 ++------------------------------------------------------------------+ | O O | 6e+06 ++ | | | 5e+06 ++ | | | 4e+06 ++ | | | 3e+06 ++ O | | O O O O O O | 2e+06 +O O O | O O OO OOO O O OOO O O O OO | 1e+06 ++ | **.***.***.***.* *.***. **.***.***. **.** .***.* *.***. **.***.***.** 0 ++--------------*------*-----------*-----*------*------*------------+ perf-stat.node-load-misses 6e+08 ++-----------------O-O----------------------------------------------+ O | 5e+08 ++ O O OOO O | | O O O O O O O O | | O O O OO | 4e+08 +O O | | O O O O | 3e+08 ++ O | | | 2e+08 ++ | | | | | 1e+08 **.***.***.***.* *.*** **.***.*** **.** ***.* *.*** **.***.***.** | :: + : + : :+ :: + : | 0 ++--------------*------*-----------*-----*------*------*------------+ perf-stat.node-stores 1.4e+08 ++----------------------------------------------------------------+ | | 1.2e+08 ++ O O | |O O O | 1e+08 ++ O O O O O O O O OO OO | O O OO O O O O O O | 8e+07 ++ OO | | | 6e+07 ++ | | | 4e+07 ++ * | **.****. **.* * ***.* *.****.*** **.** *.*** ***.* *.***.****.** 2e+07 ++ * : : : : : : : : : : : : | | :: : :: : :: : | 0 ++--------------*-----*-----------*-----*------*-----*------------+ perf-stat.page-faults 250000 ++-----------------------------------------------------------------+ | | O O O OO O OOO OOO OOO O O O O | 200000 +O O OO OO | | O O O | | O | 150000 ++ | | | 100000 ++ | | | | | 50000 **.***.***.**** **.** ***.***.** *.*** **.** ***.* **.***.***.** | : : : : : : : : : : : : | | :: :: : :: :: : | 0 ++--------------*-----*-----------*------*-----*------*------------+ perf-stat.context-switches 4e+06 ++----------------------------------------------------------------+ | O O O | 3.5e+06 OO OOO O OO O O OO O O O O | 3e+06 ++ O O O O | | | 2.5e+06 ++ O O O O | | O O | 2e+06 ++ | | | 1.5e+06 ++ | 1e+06 ++ | | | 500000 ++ | **. *.* .* ***.* *.****.* *. **.** *.***. ***.* *.***.****.** 0 ++-***---**--**-*-----*--------*--*-----*------*-----*------------+ perf-stat.minor-faults 250000 ++-----------------------------------------------------------------+ | | O O O OO O OOO OOO OOO O O O O | 200000 +O O OO OO | | O O O | | O | 150000 ++ | | | 100000 ++ | | | | | 50000 **.***.***.**** **.** ***.***.** *.*** **.** ***.* **.***.***.** | : : : : : : : : : : : : | | :: :: : :: :: : | 0 ++--------------*-----*-----------*------*-----*------*------------+ fsmark.time.system_time 45 ++---------------------------------------------------------------------+ | O O O O | 40 ++ O O O O O O | OO OO O O OO O O O O O O O O | 35 ++ O O O | | | 30 ++ | | | 25 ++ | | | 20 ++ .*| | .* * * *. * *.* .* .* .* .* .* .* *. .***. * * 15 ** *.* *.**.***.* *.* * *.* **.** ** * ** * ** * ** * | | | 10 ++---------------------------------------------------------------------+ fsmark.time.percent_of_cpu_this_job_got 100 ++--------------------------------------------------------------------+ | | 90 *+ *.**.** .***.**. **.** .**. * .***. *.***. **.**. **.** .**.* *.** |*.** * * * * * * * * * * | | | 80 ++ | | | 70 ++ | | | 60 ++ | | O | | O O | 50 ++ O O O O O O OO OO | OO O O O O OO OO O O O | 40 ++----------O------------O-O------------------------------------------+ fsmark.time.elapsed_time 90 ++-O---------O----O--O-------------------------------------------------+ O O O O O O O OOO OO O O O | 80 +O O O O O | 70 ++ O O O | | O O | 60 ++ | | | 50 ++ | | | 40 ++ | 30 ++ | | | 20 ++.* *. *. .* .* .* .** .**.*| ** *.***.**.***.***.* ***.* ***.**.*** *.*** *.*** **.** * * 10 ++---------------------------------------------------------------------+ fsmark.time.elapsed_time.max 90 ++-O---------O----O--O-------------------------------------------------+ O O O O O O O OOO OO O O O | 80 +O O O O O | 70 ++ O O O | | O O | 60 ++ | | | 50 ++ | | | 40 ++ | 30 ++ | | | 20 ++.* *. *. .* .* .* .** .**.*| ** *.***.**.***.***.* ***.* ***.**.*** *.*** *.*** **.** * * 10 ++---------------------------------------------------------------------+ fsmark.time.voluntary_context_switches 3500 ++-------------------------------------------------------------------+ | OO O O | 3000 +O O O O | | O OO O | 2500 O+ OO O O OOO OOO OOO O | | O | 2000 ++ O | | | 1500 ++ | | | 1000 ++ | | | 500 ++ | **.** .** *.* *.***.***.***.** .**.***.***.***.***.***.**.***.***.** 0 ++---*---*-*---*----------------*------------------------------------+ fsmark.time.file_system_outputs 1.3e+08 ++----------------------------------------------------------------+ OO OOOO OOO OOO OOOO OOO OOOO OOO OOO | 1.2e+08 ++ | 1.1e+08 ++ | | | 1e+08 ++ | | | 9e+07 ++ | | | 8e+07 ++ | 7e+07 ++ | | | 6e+07 **.* **.** *.** .***. **. .** ***. *.** .***. *.****.** | * *.** ** ** *** *.* ** ** ** | 5e+07 ++----------------------------------------------------------------+ interrupts.CAL:Function_call_interrupts 160000 ++-----------------------------------------------------------------+ | O O | 140000 O+ O OOO O O O OOO O O OO | 120000 +O O O O O O O O O | | O | 100000 ++ O O | | | 80000 ++ | | | 60000 ++ | 40000 ++ | **.***.***.**** **.** ***.***.** *.*** **.** ***.* **.***.***.** 20000 ++ : : : : : : : : : : : : | | :: :: : :: :: : | 0 ++--------------*-----*-----------*------*-----*------*------------+ vmstat.system.cs 45000 ++-------O----------------------------------------------------------+ |O O O O OO O O O O OO | 40000 O+ O O O O OO O O O | 35000 ++ O | | | 30000 ++ OO O O | 25000 ++ O | | | 20000 ++ | 15000 ++ | | | 10000 **. .** * **.***.***.***.* *.***.***.***.***.***.***.***.***.** 5000 ++ *** *. :*.* * | | * | 0 ++------------------------------------------------------------------+ [*] 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, Xiaolong