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Date: Mon, 16 Jul 2018 04:01:44 -0400 (EDT)
From: Xiao Ni <xni@...hat.com>
To: Aaron Lu <aaron.lu@...el.com>
Cc: kernel test robot <xiaolong.ye@...el.com>,
Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org,
LKML <linux-kernel@...r.kernel.org>, Shaohua Li <shli@...com>,
Ming Lei <ming.lei@...hat.com>
Subject: Re: [LKP] [lkp-robot] [MD] 5a409b4f56: aim7.jobs-per-min -27.5%
regression
Hi Aaron
I have no update for this yet. I'll have a look this week and give response later.
Regards
Xiao
----- Original Message -----
> From: "Aaron Lu" <aaron.lu@...el.com>
> To: "Xiao Ni" <xni@...hat.com>
> Cc: "kernel test robot" <xiaolong.ye@...el.com>, "Stephen Rothwell" <sfr@...b.auug.org.au>, lkp@...org, "LKML"
> <linux-kernel@...r.kernel.org>, "Shaohua Li" <shli@...com>, "Ming Lei" <ming.lei@...hat.com>
> Sent: Monday, July 16, 2018 3:54:30 PM
> Subject: Re: [LKP] [lkp-robot] [MD] 5a409b4f56: aim7.jobs-per-min -27.5% regression
>
> Ping...
> Any update on this?
> Feel free to ask me for any additional data if you need.
>
> Thanks,
> Aaron
>
> On Mon, Jun 04, 2018 at 02:42:03PM +0800, kernel test robot wrote:
> >
> > Greeting,
> >
> > FYI, we noticed a -27.5% regression of aim7.jobs-per-min due to commit:
> >
> >
> > commit: 5a409b4f56d50b212334f338cb8465d65550cd85 ("MD: fix lock contention
> > for flush bios")
> > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
> >
> > in testcase: aim7
> > on test machine: 40 threads Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz with
> > 384G memory
> > with following parameters:
> >
> > disk: 4BRD_12G
> > md: RAID1
> > fs: xfs
> > test: sync_disk_rw
> > load: 600
> > cpufreq_governor: performance
> >
> > test-description: AIM7 is a traditional UNIX system level benchmark suite
> > which is used to test and measure the performance of multiuser system.
> > test-url: https://sourceforge.net/projects/aimbench/files/aim-suite7/
> >
> >
> > Details are as below:
> > -------------------------------------------------------------------------------------------------->
> >
> > =========================================================================================
> > compiler/cpufreq_governor/disk/fs/kconfig/load/md/rootfs/tbox_group/test/testcase:
> > gcc-7/performance/4BRD_12G/xfs/x86_64-rhel-7.2/600/RAID1/debian-x86_64-2016-08-31.cgz/lkp-ivb-ep01/sync_disk_rw/aim7
> >
> > commit:
> > 448ec638c6 ("md/raid5: Assigning NULL to sh->batch_head before testing
> > bit R5_Overlap of a stripe")
> > 5a409b4f56 ("MD: fix lock contention for flush bios")
> >
> > 448ec638c6bcf369 5a409b4f56d50b212334f338cb
> > ---------------- --------------------------
> > %stddev %change %stddev
> > \ | \
> > 1640 -27.5% 1189 aim7.jobs-per-min
> > 2194 +37.9% 3026 aim7.time.elapsed_time
> > 2194 +37.9% 3026 aim7.time.elapsed_time.max
> > 50990311 -95.8% 2148266
> > aim7.time.involuntary_context_switches
> > 107965 ± 4% -26.4% 79516 ± 2% aim7.time.minor_page_faults
> > 49.14 +82.5% 89.66 ± 2% aim7.time.user_time
> > 7.123e+08 -35.7% 4.582e+08
> > aim7.time.voluntary_context_switches
> > 672282 +36.8% 919615
> > interrupts.CAL:Function_call_interrupts
> > 16631387 ± 2% -39.9% 9993075 ± 7% softirqs.RCU
> > 9708009 +186.1% 27778773 softirqs.SCHED
> > 33436649 +45.5% 48644912 softirqs.TIMER
> > 4.16 -2.1 2.01 mpstat.cpu.idle%
> > 0.24 ± 2% +27.7 27.91 mpstat.cpu.iowait%
> > 95.51 -25.6 69.94 mpstat.cpu.sys%
> > 0.09 +0.0 0.13 mpstat.cpu.usr%
> > 6051756 ± 3% +59.0% 9623085
> > numa-numastat.node0.local_node
> > 6055311 ± 3% +59.0% 9626996 numa-numastat.node0.numa_hit
> > 6481209 ± 3% +48.4% 9616310
> > numa-numastat.node1.local_node
> > 6485866 ± 3% +48.3% 9620756 numa-numastat.node1.numa_hit
> > 61404 -27.7% 44424 vmstat.io.bo
> > 2.60 ± 18% +11519.2% 302.10 vmstat.procs.b
> > 304.10 -84.9% 45.80 ± 2% vmstat.procs.r
> > 400477 -43.5% 226094 vmstat.system.cs
> > 166461 -49.9% 83332 vmstat.system.in
> > 78397 +27.0% 99567 meminfo.Dirty
> > 14427 +18.4% 17082 meminfo.Inactive(anon)
> > 1963 ± 5% +5.4% 2068 ± 4% meminfo.Mlocked
> > 101143 +991.0% 1103488 meminfo.SUnreclaim
> > 53684 ± 4% -18.1% 43946 ± 3% meminfo.Shmem
> > 175580 +571.4% 1178829 meminfo.Slab
> > 39406 +26.2% 49717 numa-meminfo.node0.Dirty
> > 1767204 ± 10% +37.2% 2425487 ± 2% numa-meminfo.node0.MemUsed
> > 51634 ± 18% +979.3% 557316 numa-meminfo.node0.SUnreclaim
> > 92259 ± 13% +551.7% 601288 numa-meminfo.node0.Slab
> > 38969 +28.0% 49863 numa-meminfo.node1.Dirty
> > 1895204 ± 10% +24.7% 2363037 ± 3% numa-meminfo.node1.MemUsed
> > 49512 ± 19% +1003.1% 546165 numa-meminfo.node1.SUnreclaim
> > 83323 ± 14% +593.1% 577534 numa-meminfo.node1.Slab
> > 2.524e+09 +894.5% 2.51e+10 cpuidle.C1.time
> > 50620790 +316.5% 2.109e+08 cpuidle.C1.usage
> > 3.965e+08 +1871.1% 7.815e+09 cpuidle.C1E.time
> > 5987788 +186.1% 17129412 cpuidle.C1E.usage
> > 2.506e+08 +97.5% 4.948e+08 ± 2% cpuidle.C3.time
> > 2923498 -55.7% 1295033 cpuidle.C3.usage
> > 5.327e+08 +179.9% 1.491e+09 cpuidle.C6.time
> > 779874 ± 2% +229.3% 2567769 cpuidle.C6.usage
> > 6191357 +3333.6% 2.126e+08 cpuidle.POLL.time
> > 204095 +1982.1% 4249504 cpuidle.POLL.usage
> > 9850 +26.3% 12444 numa-vmstat.node0.nr_dirty
> > 12908 ± 18% +979.3% 139321
> > numa-vmstat.node0.nr_slab_unreclaimable
> > 8876 +29.6% 11505
> > numa-vmstat.node0.nr_zone_write_pending
> > 3486319 ± 4% +55.1% 5407021 numa-vmstat.node0.numa_hit
> > 3482713 ± 4% +55.1% 5403066 numa-vmstat.node0.numa_local
> > 9743 +28.1% 12479 numa-vmstat.node1.nr_dirty
> > 12377 ± 19% +1003.1% 136532
> > numa-vmstat.node1.nr_slab_unreclaimable
> > 9287 +30.0% 12074
> > numa-vmstat.node1.nr_zone_write_pending
> > 3678995 ± 4% +44.8% 5326772 numa-vmstat.node1.numa_hit
> > 3497785 ± 4% +47.1% 5145705 numa-vmstat.node1.numa_local
> > 252.70 +100.2% 505.90
> > slabinfo.biovec-max.active_objs
> > 282.70 +99.1% 562.90 slabinfo.biovec-max.num_objs
> > 2978 ± 17% +52.5% 4543 ± 14%
> > slabinfo.dmaengine-unmap-16.active_objs
> > 2978 ± 17% +52.5% 4543 ± 14%
> > slabinfo.dmaengine-unmap-16.num_objs
> > 2078 +147.9% 5153 ± 11%
> > slabinfo.ip6_dst_cache.active_objs
> > 2078 +148.1% 5157 ± 11%
> > slabinfo.ip6_dst_cache.num_objs
> > 5538 ± 2% +26.2% 6990 ± 3%
> > slabinfo.kmalloc-1024.active_objs
> > 5586 ± 3% +27.1% 7097 ± 3%
> > slabinfo.kmalloc-1024.num_objs
> > 6878 +47.6% 10151 ± 5%
> > slabinfo.kmalloc-192.active_objs
> > 6889 +47.5% 10160 ± 5% slabinfo.kmalloc-192.num_objs
> > 9843 ± 5% +1.6e+05% 16002876
> > slabinfo.kmalloc-64.active_objs
> > 161.90 ± 4% +1.5e+05% 250044
> > slabinfo.kmalloc-64.active_slabs
> > 10386 ± 4% +1.5e+05% 16002877 slabinfo.kmalloc-64.num_objs
> > 161.90 ± 4% +1.5e+05% 250044 slabinfo.kmalloc-64.num_slabs
> > 432.80 ± 12% +45.2% 628.50 ± 6%
> > slabinfo.nfs_read_data.active_objs
> > 432.80 ± 12% +45.2% 628.50 ± 6%
> > slabinfo.nfs_read_data.num_objs
> > 3956 -23.1% 3041
> > slabinfo.pool_workqueue.active_objs
> > 4098 -19.8% 3286
> > slabinfo.pool_workqueue.num_objs
> > 360.50 ± 15% +56.6% 564.70 ± 11%
> > slabinfo.secpath_cache.active_objs
> > 360.50 ± 15% +56.6% 564.70 ± 11%
> > slabinfo.secpath_cache.num_objs
> > 35373 ± 2% -8.3% 32432 proc-vmstat.nr_active_anon
> > 19595 +27.1% 24914 proc-vmstat.nr_dirty
> > 3607 +18.4% 4270 proc-vmstat.nr_inactive_anon
> > 490.30 ± 5% +5.4% 516.90 ± 4% proc-vmstat.nr_mlock
> > 13421 ± 4% -18.1% 10986 ± 3% proc-vmstat.nr_shmem
> > 18608 +1.2% 18834
> > proc-vmstat.nr_slab_reclaimable
> > 25286 +991.0% 275882
> > proc-vmstat.nr_slab_unreclaimable
> > 35405 ± 2% -8.3% 32465
> > proc-vmstat.nr_zone_active_anon
> > 3607 +18.4% 4270
> > proc-vmstat.nr_zone_inactive_anon
> > 18161 +29.8% 23572
> > proc-vmstat.nr_zone_write_pending
> > 76941 ± 5% -36.8% 48622 ± 4% proc-vmstat.numa_hint_faults
> > 33878 ± 7% -35.5% 21836 ± 5%
> > proc-vmstat.numa_hint_faults_local
> > 12568956 +53.3% 19272377 proc-vmstat.numa_hit
> > 12560739 +53.4% 19264015 proc-vmstat.numa_local
> > 17938 ± 3% -33.5% 11935 ± 2%
> > proc-vmstat.numa_pages_migrated
> > 78296 ± 5% -36.0% 50085 ± 4% proc-vmstat.numa_pte_updates
> > 8848 ± 6% -38.2% 5466 ± 6% proc-vmstat.pgactivate
> > 8874568 ± 8% +368.7% 41590920 proc-vmstat.pgalloc_normal
> > 5435965 +39.2% 7564148 proc-vmstat.pgfault
> > 12863707 +255.1% 45683570 proc-vmstat.pgfree
> > 17938 ± 3% -33.5% 11935 ± 2% proc-vmstat.pgmigrate_success
> > 1.379e+13 -40.8% 8.17e+12 perf-stat.branch-instructions
> > 0.30 +0.1 0.42 perf-stat.branch-miss-rate%
> > 4.2e+10 -17.6% 3.462e+10 perf-stat.branch-misses
> > 15.99 +3.8 19.74 perf-stat.cache-miss-rate%
> > 3.779e+10 -21.6% 2.963e+10 perf-stat.cache-misses
> > 2.364e+11 -36.5% 1.501e+11 perf-stat.cache-references
> > 8.795e+08 -22.2% 6.84e+08 perf-stat.context-switches
> > 4.44 -7.2% 4.12 perf-stat.cpi
> > 2.508e+14 -44.5% 1.393e+14 perf-stat.cpu-cycles
> > 36915392 +60.4% 59211221 perf-stat.cpu-migrations
> > 0.29 ± 2% +0.0 0.34 ± 4%
> > perf-stat.dTLB-load-miss-rate%
> > 4.14e+10 -30.2% 2.89e+10 ± 4% perf-stat.dTLB-load-misses
> > 1.417e+13 -40.1% 8.491e+12 perf-stat.dTLB-loads
> > 0.20 ± 4% -0.0 0.18 ± 5%
> > perf-stat.dTLB-store-miss-rate%
> > 3.072e+09 ± 4% -28.0% 2.21e+09 ± 4% perf-stat.dTLB-store-misses
> > 1.535e+12 -20.2% 1.225e+12 perf-stat.dTLB-stores
> > 90.73 -11.7 79.07
> > perf-stat.iTLB-load-miss-rate%
> > 8.291e+09 -6.6% 7.743e+09 perf-stat.iTLB-load-misses
> > 8.473e+08 +141.8% 2.049e+09 ± 3% perf-stat.iTLB-loads
> > 5.646e+13 -40.2% 3.378e+13 perf-stat.instructions
> > 6810 -35.9% 4362
> > perf-stat.instructions-per-iTLB-miss
> > 0.23 +7.8% 0.24 perf-stat.ipc
> > 5326672 +39.2% 7413706 perf-stat.minor-faults
> > 1.873e+10 -29.9% 1.312e+10 perf-stat.node-load-misses
> > 2.093e+10 -29.2% 1.481e+10 perf-stat.node-loads
> > 39.38 -0.7 38.72
> > perf-stat.node-store-miss-rate%
> > 1.087e+10 -16.6% 9.069e+09 perf-stat.node-store-misses
> > 1.673e+10 -14.2% 1.435e+10 perf-stat.node-stores
> > 5326695 +39.2% 7413708 perf-stat.page-faults
> > 1875095 ± 7% -54.8% 846645 ± 16%
> > sched_debug.cfs_rq:/.MIN_vruntime.avg
> > 32868920 ± 6% -35.7% 21150379 ± 14%
> > sched_debug.cfs_rq:/.MIN_vruntime.max
> > 7267340 ± 5% -44.7% 4015798 ± 14%
> > sched_debug.cfs_rq:/.MIN_vruntime.stddev
> > 4278 ± 7% -54.7% 1939 ± 11%
> > sched_debug.cfs_rq:/.exec_clock.stddev
> > 245.48 ± 2% +65.3% 405.75 ± 7%
> > sched_debug.cfs_rq:/.load_avg.avg
> > 2692 ± 6% +126.0% 6087 ± 7%
> > sched_debug.cfs_rq:/.load_avg.max
> > 33.09 -73.0% 8.94 ± 7%
> > sched_debug.cfs_rq:/.load_avg.min
> > 507.40 ± 4% +128.0% 1156 ± 7%
> > sched_debug.cfs_rq:/.load_avg.stddev
> > 1875095 ± 7% -54.8% 846645 ± 16%
> > sched_debug.cfs_rq:/.max_vruntime.avg
> > 32868921 ± 6% -35.7% 21150379 ± 14%
> > sched_debug.cfs_rq:/.max_vruntime.max
> > 7267341 ± 5% -44.7% 4015798 ± 14%
> > sched_debug.cfs_rq:/.max_vruntime.stddev
> > 35887197 -13.2% 31149130
> > sched_debug.cfs_rq:/.min_vruntime.avg
> > 37385506 -14.3% 32043914
> > sched_debug.cfs_rq:/.min_vruntime.max
> > 34416296 -12.3% 30183927
> > sched_debug.cfs_rq:/.min_vruntime.min
> > 1228844 ± 8% -52.6% 582759 ± 4%
> > sched_debug.cfs_rq:/.min_vruntime.stddev
> > 0.83 -28.1% 0.60 ± 6%
> > sched_debug.cfs_rq:/.nr_running.avg
> > 2.07 ± 3% -24.6% 1.56 ± 8%
> > sched_debug.cfs_rq:/.nr_running.max
> > 20.52 ± 4% -48.8% 10.52 ± 3%
> > sched_debug.cfs_rq:/.nr_spread_over.avg
> > 35.96 ± 5% -42.2% 20.77 ± 9%
> > sched_debug.cfs_rq:/.nr_spread_over.max
> > 8.97 ± 11% -44.5% 4.98 ± 8%
> > sched_debug.cfs_rq:/.nr_spread_over.min
> > 6.40 ± 12% -45.5% 3.49 ± 7%
> > sched_debug.cfs_rq:/.nr_spread_over.stddev
> > 21.78 ± 7% +143.3% 53.00 ± 9%
> > sched_debug.cfs_rq:/.runnable_load_avg.avg
> > 328.86 ± 18% +303.4% 1326 ± 14%
> > sched_debug.cfs_rq:/.runnable_load_avg.max
> > 55.97 ± 17% +286.0% 216.07 ± 13%
> > sched_debug.cfs_rq:/.runnable_load_avg.stddev
> > 0.10 ± 29% -82.4% 0.02 ± 50%
> > sched_debug.cfs_rq:/.spread.avg
> > 3.43 ± 25% -79.9% 0.69 ± 50%
> > sched_debug.cfs_rq:/.spread.max
> > 0.56 ± 26% -80.7% 0.11 ± 50%
> > sched_debug.cfs_rq:/.spread.stddev
> > 1228822 ± 8% -52.6% 582732 ± 4%
> > sched_debug.cfs_rq:/.spread0.stddev
> > 992.30 -24.9% 745.56 ± 2%
> > sched_debug.cfs_rq:/.util_avg.avg
> > 1485 -18.1% 1217 ± 2%
> > sched_debug.cfs_rq:/.util_avg.max
> > 515.45 ± 2% -25.2% 385.73 ± 6%
> > sched_debug.cfs_rq:/.util_avg.min
> > 201.54 -14.9% 171.52 ± 3%
> > sched_debug.cfs_rq:/.util_avg.stddev
> > 248.73 ± 6% -38.1% 154.02 ± 8%
> > sched_debug.cfs_rq:/.util_est_enqueued.avg
> > 222.78 ± 3% -15.8% 187.58 ± 2%
> > sched_debug.cfs_rq:/.util_est_enqueued.stddev
> > 77097 ± 4% +278.4% 291767 ± 11% sched_debug.cpu.avg_idle.avg
> > 181319 ± 6% +298.7% 722862 ± 3% sched_debug.cpu.avg_idle.max
> > 19338 +392.3% 95203 ± 17% sched_debug.cpu.avg_idle.min
> > 34877 ± 6% +303.5% 140732 ± 6%
> > sched_debug.cpu.avg_idle.stddev
> > 1107408 +37.6% 1523823 sched_debug.cpu.clock.avg
> > 1107427 +37.6% 1523834 sched_debug.cpu.clock.max
> > 1107385 +37.6% 1523811 sched_debug.cpu.clock.min
> > 13.10 ± 9% -48.1% 6.80 ± 8% sched_debug.cpu.clock.stddev
> > 1107408 +37.6% 1523823
> > sched_debug.cpu.clock_task.avg
> > 1107427 +37.6% 1523834
> > sched_debug.cpu.clock_task.max
> > 1107385 +37.6% 1523811
> > sched_debug.cpu.clock_task.min
> > 13.10 ± 9% -48.1% 6.80 ± 8%
> > sched_debug.cpu.clock_task.stddev
> > 30.36 ± 7% +107.7% 63.06 ± 12%
> > sched_debug.cpu.cpu_load[0].avg
> > 381.48 ± 18% +269.8% 1410 ± 18%
> > sched_debug.cpu.cpu_load[0].max
> > 63.92 ± 18% +262.2% 231.50 ± 17%
> > sched_debug.cpu.cpu_load[0].stddev
> > 31.34 ± 5% +118.4% 68.44 ± 9%
> > sched_debug.cpu.cpu_load[1].avg
> > 323.62 ± 17% +349.5% 1454 ± 14%
> > sched_debug.cpu.cpu_load[1].max
> > 53.23 ± 16% +350.3% 239.71 ± 13%
> > sched_debug.cpu.cpu_load[1].stddev
> > 32.15 ± 3% +129.4% 73.74 ± 6%
> > sched_debug.cpu.cpu_load[2].avg
> > 285.20 ± 14% +420.8% 1485 ± 9%
> > sched_debug.cpu.cpu_load[2].max
> > 46.66 ± 12% +430.0% 247.32 ± 8%
> > sched_debug.cpu.cpu_load[2].stddev
> > 33.02 ± 2% +133.2% 77.00 ± 3%
> > sched_debug.cpu.cpu_load[3].avg
> > 252.16 ± 10% +481.2% 1465 ± 7%
> > sched_debug.cpu.cpu_load[3].max
> > 40.74 ± 8% +503.2% 245.72 ± 6%
> > sched_debug.cpu.cpu_load[3].stddev
> > 33.86 +131.5% 78.38 ± 2%
> > sched_debug.cpu.cpu_load[4].avg
> > 219.81 ± 8% +522.6% 1368 ± 5%
> > sched_debug.cpu.cpu_load[4].max
> > 35.45 ± 7% +554.2% 231.90 ± 4%
> > sched_debug.cpu.cpu_load[4].stddev
> > 2600 ± 4% -30.5% 1807 ± 4% sched_debug.cpu.curr->pid.avg
> > 25309 ± 4% -19.5% 20367 ± 4% sched_debug.cpu.curr->pid.max
> > 4534 ± 7% -21.2% 3573 ± 5%
> > sched_debug.cpu.curr->pid.stddev
> > 0.00 ± 2% -27.6% 0.00 ± 6%
> > sched_debug.cpu.next_balance.stddev
> > 1083917 +38.6% 1502777
> > sched_debug.cpu.nr_load_updates.avg
> > 1088142 +38.6% 1508302
> > sched_debug.cpu.nr_load_updates.max
> > 1082048 +38.7% 1501073
> > sched_debug.cpu.nr_load_updates.min
> > 3.53 ± 6% -73.0% 0.95 ± 6%
> > sched_debug.cpu.nr_running.avg
> > 11.54 ± 3% -62.1% 4.37 ± 10%
> > sched_debug.cpu.nr_running.max
> > 3.10 ± 3% -66.8% 1.03 ± 9%
> > sched_debug.cpu.nr_running.stddev
> > 10764176 -22.4% 8355047
> > sched_debug.cpu.nr_switches.avg
> > 10976436 -22.2% 8545010
> > sched_debug.cpu.nr_switches.max
> > 10547712 -22.8% 8143037
> > sched_debug.cpu.nr_switches.min
> > 148628 ± 3% -22.7% 114880 ± 7%
> > sched_debug.cpu.nr_switches.stddev
> > 11.13 ± 2% +24.5% 13.85
> > sched_debug.cpu.nr_uninterruptible.avg
> > 6420 ± 8% -48.7% 3296 ± 11%
> > sched_debug.cpu.nr_uninterruptible.max
> > -5500 -37.2% -3455
> > sched_debug.cpu.nr_uninterruptible.min
> > 3784 ± 6% -47.2% 1997 ± 4%
> > sched_debug.cpu.nr_uninterruptible.stddev
> > 10812670 -22.7% 8356821
> > sched_debug.cpu.sched_count.avg
> > 11020646 -22.5% 8546277
> > sched_debug.cpu.sched_count.max
> > 10601390 -23.2% 8144743
> > sched_debug.cpu.sched_count.min
> > 144529 ± 3% -20.9% 114359 ± 7%
> > sched_debug.cpu.sched_count.stddev
> > 706116 +259.0% 2534721
> > sched_debug.cpu.sched_goidle.avg
> > 771307 +232.4% 2564059
> > sched_debug.cpu.sched_goidle.max
> > 644658 +286.9% 2494236
> > sched_debug.cpu.sched_goidle.min
> > 49847 ± 6% -67.9% 15979 ± 7%
> > sched_debug.cpu.sched_goidle.stddev
> > 9618827 -39.9% 5780369
> > sched_debug.cpu.ttwu_count.avg
> > 8990451 -61.7% 3441265 ± 4%
> > sched_debug.cpu.ttwu_count.min
> > 418563 ± 25% +244.2% 1440565 ± 7%
> > sched_debug.cpu.ttwu_count.stddev
> > 640964 -93.7% 40366 ± 2%
> > sched_debug.cpu.ttwu_local.avg
> > 679527 -92.1% 53476 ± 4%
> > sched_debug.cpu.ttwu_local.max
> > 601661 -94.9% 30636 ± 3%
> > sched_debug.cpu.ttwu_local.min
> > 24242 ± 21% -77.7% 5405 ± 9%
> > sched_debug.cpu.ttwu_local.stddev
> > 1107383 +37.6% 1523810 sched_debug.cpu_clk
> > 1107383 +37.6% 1523810 sched_debug.ktime
> > 0.00 -49.4% 0.00 ± 65%
> > sched_debug.rt_rq:/.rt_nr_migratory.avg
> > 0.03 -49.4% 0.01 ± 65%
> > sched_debug.rt_rq:/.rt_nr_migratory.max
> > 0.00 -49.4% 0.00 ± 65%
> > sched_debug.rt_rq:/.rt_nr_migratory.stddev
> > 0.00 -49.4% 0.00 ± 65%
> > sched_debug.rt_rq:/.rt_nr_running.avg
> > 0.03 -49.4% 0.01 ± 65%
> > sched_debug.rt_rq:/.rt_nr_running.max
> > 0.00 -49.4% 0.00 ± 65%
> > sched_debug.rt_rq:/.rt_nr_running.stddev
> > 0.01 ± 8% +79.9% 0.01 ± 23%
> > sched_debug.rt_rq:/.rt_time.avg
> > 1107805 +37.6% 1524235 sched_debug.sched_clk
> > 87.59 -87.6 0.00
> > perf-profile.calltrace.cycles-pp.md_flush_request.raid1_make_request.md_handle_request.md_make_request.generic_make_request
> > 87.57 -87.6 0.00
> > perf-profile.calltrace.cycles-pp.submit_bio_wait.blkdev_issue_flush.xfs_file_fsync.xfs_file_write_iter.__vfs_write
> > 87.59 -87.5 0.05 ±299%
> > perf-profile.calltrace.cycles-pp.blkdev_issue_flush.xfs_file_fsync.xfs_file_write_iter.__vfs_write.vfs_write
> > 87.51 -87.5 0.00
> > perf-profile.calltrace.cycles-pp.generic_make_request.submit_bio.submit_bio_wait.blkdev_issue_flush.xfs_file_fsync
> > 87.51 -87.5 0.00
> > perf-profile.calltrace.cycles-pp.submit_bio.submit_bio_wait.blkdev_issue_flush.xfs_file_fsync.xfs_file_write_iter
> > 87.50 -87.5 0.00
> > perf-profile.calltrace.cycles-pp.md_make_request.generic_make_request.submit_bio.submit_bio_wait.blkdev_issue_flush
> > 87.50 -87.5 0.00
> > perf-profile.calltrace.cycles-pp.md_handle_request.md_make_request.generic_make_request.submit_bio.submit_bio_wait
> > 82.37 -82.4 0.00
> > perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.md_flush_request.raid1_make_request.md_handle_request.md_make_request
> > 82.23 -82.2 0.00
> > perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irq.md_flush_request.raid1_make_request.md_handle_request
> > 87.79 -25.0 62.75 ± 8%
> > perf-profile.calltrace.cycles-pp.raid1_make_request.md_handle_request.md_make_request.generic_make_request.submit_bio
> > 92.78 -13.0 79.76
> > perf-profile.calltrace.cycles-pp.xfs_file_fsync.xfs_file_write_iter.__vfs_write.vfs_write.ksys_write
> > 93.08 -12.6 80.49
> > perf-profile.calltrace.cycles-pp.xfs_file_write_iter.__vfs_write.vfs_write.ksys_write.do_syscall_64
> > 93.08 -12.6 80.50
> > perf-profile.calltrace.cycles-pp.__vfs_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 93.11 -12.6 80.56
> > perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 93.11 -12.6 80.56
> > perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 93.14 -12.5 80.64
> > perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 93.15 -12.5 80.65
> > perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
> > 3.40 ± 2% -1.4 1.97 ± 8%
> > perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork
> > 3.33 ± 2% -1.4 1.96 ± 9%
> > perf-profile.calltrace.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork
> > 1.12 ± 2% -0.7 0.42 ± 68%
> > perf-profile.calltrace.cycles-pp.__save_stack_trace.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity.enqueue_task_fair
> > 1.16 ± 2% -0.6 0.60 ± 17%
> > perf-profile.calltrace.cycles-pp.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity.enqueue_task_fair.ttwu_do_activate
> > 0.00 +0.6 0.59 ± 15%
> > perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__wake_up_common_lock.raid1_write_request.raid1_make_request.md_handle_request
> > 0.00 +0.6 0.64 ± 15%
> > perf-profile.calltrace.cycles-pp.__wake_up_common_lock.raid1_write_request.raid1_make_request.md_handle_request.md_make_request
> > 0.00 +0.7 0.65 ± 10%
> > perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.ttwu_do_activate.sched_ttwu_pending.do_idle
> > 0.00 +0.7 0.68 ± 10%
> > perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.sched_ttwu_pending.do_idle.cpu_startup_entry
> > 0.00 +0.7 0.69 ± 10%
> > perf-profile.calltrace.cycles-pp.ttwu_do_activate.sched_ttwu_pending.do_idle.cpu_startup_entry.start_secondary
> > 0.00 +0.8 0.79 ± 11%
> > perf-profile.calltrace.cycles-pp.sched_ttwu_pending.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
> > 0.00 +0.8 0.83 ± 7%
> > perf-profile.calltrace.cycles-pp.__schedule.schedule.raid1_write_request.raid1_make_request.md_handle_request
> > 0.62 ± 3% +0.8 1.45 ± 22%
> > perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.remove_wait_queue.xlog_wait.__xfs_log_force_lsn
> > 0.00 +0.8 0.83 ± 7%
> > perf-profile.calltrace.cycles-pp.schedule.raid1_write_request.raid1_make_request.md_handle_request.md_make_request
> > 0.63 ± 2% +0.8 1.46 ± 22%
> > perf-profile.calltrace.cycles-pp.remove_wait_queue.xlog_wait.__xfs_log_force_lsn.xfs_log_force_lsn.xfs_file_fsync
> > 0.62 ± 2% +0.8 1.46 ± 22%
> > perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.remove_wait_queue.xlog_wait.__xfs_log_force_lsn.xfs_log_force_lsn
> > 3.92 ± 2% +0.9 4.79 ± 6%
> > perf-profile.calltrace.cycles-pp.ret_from_fork
> > 3.92 ± 2% +0.9 4.79 ± 6%
> > perf-profile.calltrace.cycles-pp.kthread.ret_from_fork
> > 0.69 ± 2% +0.9 1.64 ± 23%
> > perf-profile.calltrace.cycles-pp.xlog_wait.__xfs_log_force_lsn.xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter
> > 0.00 +1.2 1.17 ± 8%
> > perf-profile.calltrace.cycles-pp._raw_spin_unlock_irqrestore.prepare_to_wait_event.raid1_write_request.raid1_make_request.md_handle_request
> > 0.00 +1.2 1.23 ± 18%
> > perf-profile.calltrace.cycles-pp.prepare_to_wait_event.raid1_write_request.raid1_make_request.md_handle_request.submit_flushes
> > 0.00 +1.3 1.27 ± 17%
> > perf-profile.calltrace.cycles-pp.raid1_write_request.raid1_make_request.md_handle_request.submit_flushes.process_one_work
> > 0.00 +1.3 1.27 ± 17%
> > perf-profile.calltrace.cycles-pp.md_handle_request.submit_flushes.process_one_work.worker_thread.kthread
> > 0.00 +1.3 1.27 ± 17%
> > perf-profile.calltrace.cycles-pp.raid1_make_request.md_handle_request.submit_flushes.process_one_work.worker_thread
> > 0.00 +1.3 1.27 ± 17%
> > perf-profile.calltrace.cycles-pp.submit_flushes.process_one_work.worker_thread.kthread.ret_from_fork
> > 0.00 +1.6 1.65 ± 14%
> > perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.raid_end_bio_io
> > 0.00 +1.7 1.71 ± 14%
> > perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.raid_end_bio_io.raid1_end_write_request
> > 0.00 +1.7 1.71 ± 14%
> > perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_common_lock.raid_end_bio_io.raid1_end_write_request.brd_make_request
> > 0.00 +1.9 1.86 ± 13%
> > perf-profile.calltrace.cycles-pp.__wake_up_common_lock.raid_end_bio_io.raid1_end_write_request.brd_make_request.generic_make_request
> > 0.00 +2.1 2.10 ± 10%
> > perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.remove_wait_queue.__xfs_log_force_lsn.xfs_log_force_lsn
> > 0.00 +2.1 2.10 ± 10%
> > perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.remove_wait_queue.__xfs_log_force_lsn.xfs_log_force_lsn.xfs_file_fsync
> > 0.00 +2.1 2.11 ± 10%
> > perf-profile.calltrace.cycles-pp.remove_wait_queue.__xfs_log_force_lsn.xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter
> > 0.00 +2.2 2.16 ± 10%
> > perf-profile.calltrace.cycles-pp.raid_end_bio_io.raid1_end_write_request.brd_make_request.generic_make_request.flush_bio_list
> > 2.24 ± 4% +2.2 4.44 ± 15%
> > perf-profile.calltrace.cycles-pp.xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter.__vfs_write.vfs_write
> > 0.00 +2.3 2.25 ± 10%
> > perf-profile.calltrace.cycles-pp.raid1_end_write_request.brd_make_request.generic_make_request.flush_bio_list.flush_pending_writes
> > 0.00 +2.3 2.30 ± 20%
> > perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.raid1_write_request.raid1_make_request.md_handle_request
> > 0.00 +2.4 2.35 ± 20%
> > perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.raid1_write_request.raid1_make_request.md_handle_request.md_make_request
> > 0.37 ± 65% +2.4 2.81 ± 7%
> > perf-profile.calltrace.cycles-pp.md_thread.kthread.ret_from_fork
> > 0.26 ±100% +2.5 2.81 ± 7%
> > perf-profile.calltrace.cycles-pp.raid1d.md_thread.kthread.ret_from_fork
> > 0.26 ±100% +2.5 2.81 ± 7%
> > perf-profile.calltrace.cycles-pp.flush_pending_writes.raid1d.md_thread.kthread.ret_from_fork
> > 0.26 ±100% +2.6 2.81 ± 7%
> > perf-profile.calltrace.cycles-pp.flush_bio_list.flush_pending_writes.raid1d.md_thread.kthread
> > 0.10 ±200% +2.7 2.76 ± 7%
> > perf-profile.calltrace.cycles-pp.generic_make_request.flush_bio_list.flush_pending_writes.raid1d.md_thread
> > 0.00 +2.7 2.73 ± 7%
> > perf-profile.calltrace.cycles-pp.brd_make_request.generic_make_request.flush_bio_list.flush_pending_writes.raid1d
> > 1.20 ± 3% +3.1 4.35 ± 15%
> > perf-profile.calltrace.cycles-pp.__xfs_log_force_lsn.xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter.__vfs_write
> > 0.63 ± 6% +3.8 4.38 ± 27%
> > perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.remove_wait_queue.__xfs_log_force_lsn.xfs_file_fsync
> > 0.63 ± 5% +3.8 4.39 ± 27%
> > perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.remove_wait_queue.__xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter
> > 0.63 ± 5% +3.8 4.40 ± 27%
> > perf-profile.calltrace.cycles-pp.remove_wait_queue.__xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter.__vfs_write
> > 1.26 ± 5% +5.3 6.55 ± 27%
> > perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter
> > 1.27 ± 5% +5.3 6.55 ± 27%
> > perf-profile.calltrace.cycles-pp._raw_spin_lock.__xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter.__vfs_write
> > 1.30 ± 4% +8.4 9.72 ± 9%
> > perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary
> > 1.33 ± 4% +8.9 10.26 ± 9%
> > perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
> > 2.28 ± 2% +9.1 11.36 ± 27%
> > perf-profile.calltrace.cycles-pp.__xfs_log_force_lsn.xfs_file_fsync.xfs_file_write_iter.__vfs_write.vfs_write
> > 1.59 ± 4% +10.4 11.97 ± 9%
> > perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
> > 1.59 ± 4% +10.4 11.98 ± 9%
> > perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
> > 1.59 ± 4% +10.4 11.98 ± 9%
> > perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
> > 1.63 ± 4% +10.8 12.47 ± 8%
> > perf-profile.calltrace.cycles-pp.secondary_startup_64
> > 0.00 +57.7 57.66 ± 10%
> > perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.prepare_to_wait_event.raid1_write_request.raid1_make_request
> > 0.00 +57.7 57.73 ± 10%
> > perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.prepare_to_wait_event.raid1_write_request.raid1_make_request.md_handle_request
> > 0.05 ±299% +57.8 57.85 ± 9%
> > perf-profile.calltrace.cycles-pp.prepare_to_wait_event.raid1_write_request.raid1_make_request.md_handle_request.md_make_request
> > 0.19 ±154% +62.5 62.73 ± 8%
> > perf-profile.calltrace.cycles-pp.raid1_write_request.raid1_make_request.md_handle_request.md_make_request.generic_make_request
> > 0.19 ±154% +62.6 62.76 ± 8%
> > perf-profile.calltrace.cycles-pp.md_handle_request.md_make_request.generic_make_request.submit_bio.xfs_submit_ioend
> > 0.19 ±154% +62.6 62.79 ± 8%
> > perf-profile.calltrace.cycles-pp.md_make_request.generic_make_request.submit_bio.xfs_submit_ioend.xfs_vm_writepages
> > 0.20 ±154% +62.6 62.81 ± 8%
> > perf-profile.calltrace.cycles-pp.generic_make_request.submit_bio.xfs_submit_ioend.xfs_vm_writepages.do_writepages
> > 0.20 ±154% +62.6 62.81 ± 8%
> > perf-profile.calltrace.cycles-pp.submit_bio.xfs_submit_ioend.xfs_vm_writepages.do_writepages.__filemap_fdatawrite_range
> > 0.20 ±154% +62.6 62.82 ± 8%
> > perf-profile.calltrace.cycles-pp.xfs_submit_ioend.xfs_vm_writepages.do_writepages.__filemap_fdatawrite_range.file_write_and_wait_range
> > 0.29 ±125% +62.8 63.09 ± 8%
> > perf-profile.calltrace.cycles-pp.xfs_vm_writepages.do_writepages.__filemap_fdatawrite_range.file_write_and_wait_range.xfs_file_fsync
> > 0.29 ±126% +62.8 63.10 ± 8%
> > perf-profile.calltrace.cycles-pp.do_writepages.__filemap_fdatawrite_range.file_write_and_wait_range.xfs_file_fsync.xfs_file_write_iter
> > 0.29 ±125% +62.8 63.11 ± 8%
> > perf-profile.calltrace.cycles-pp.__filemap_fdatawrite_range.file_write_and_wait_range.xfs_file_fsync.xfs_file_write_iter.__vfs_write
> > 0.62 ± 41% +62.9 63.52 ± 7%
> > perf-profile.calltrace.cycles-pp.file_write_and_wait_range.xfs_file_fsync.xfs_file_write_iter.__vfs_write.vfs_write
> > 88.51 -88.2 0.26 ± 19%
> > perf-profile.children.cycles-pp.md_flush_request
> > 87.57 -87.2 0.35 ± 19%
> > perf-profile.children.cycles-pp.submit_bio_wait
> > 87.59 -87.2 0.39 ± 19%
> > perf-profile.children.cycles-pp.blkdev_issue_flush
> > 83.26 -83.2 0.02 ±123%
> > perf-profile.children.cycles-pp._raw_spin_lock_irq
> > 88.85 -25.7 63.11 ± 8%
> > perf-profile.children.cycles-pp.md_make_request
> > 88.90 -25.7 63.17 ± 8%
> > perf-profile.children.cycles-pp.submit_bio
> > 88.83 -24.5 64.31 ± 8%
> > perf-profile.children.cycles-pp.raid1_make_request
> > 88.84 -24.5 64.33 ± 8%
> > perf-profile.children.cycles-pp.md_handle_request
> > 89.38 -23.5 65.92 ± 7%
> > perf-profile.children.cycles-pp.generic_make_request
> > 89.90 -13.4 76.51 ± 2%
> > perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
> > 92.79 -13.0 79.76
> > perf-profile.children.cycles-pp.xfs_file_fsync
> > 93.08 -12.6 80.49
> > perf-profile.children.cycles-pp.xfs_file_write_iter
> > 93.09 -12.6 80.54
> > perf-profile.children.cycles-pp.__vfs_write
> > 93.13 -12.5 80.60
> > perf-profile.children.cycles-pp.vfs_write
> > 93.13 -12.5 80.61
> > perf-profile.children.cycles-pp.ksys_write
> > 93.22 -12.4 80.83
> > perf-profile.children.cycles-pp.do_syscall_64
> > 93.22 -12.4 80.83
> > perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
> > 3.40 ± 2% -1.4 1.97 ± 8%
> > perf-profile.children.cycles-pp.worker_thread
> > 3.33 ± 2% -1.4 1.96 ± 9%
> > perf-profile.children.cycles-pp.process_one_work
> > 1.03 ± 7% -1.0 0.07 ± 37%
> > perf-profile.children.cycles-pp.xlog_cil_force_lsn
> > 1.69 ± 2% -0.7 0.96 ± 4%
> > perf-profile.children.cycles-pp.reschedule_interrupt
> > 1.66 ± 2% -0.7 0.94 ± 4%
> > perf-profile.children.cycles-pp.scheduler_ipi
> > 1.13 ± 2% -0.7 0.47 ± 11%
> > perf-profile.children.cycles-pp.finish_wait
> > 0.54 ± 8% -0.4 0.10 ± 38%
> > perf-profile.children.cycles-pp.xlog_cil_push
> > 0.49 ± 9% -0.4 0.09 ± 35%
> > perf-profile.children.cycles-pp.xlog_write
> > 0.10 ± 8% -0.1 0.04 ± 67%
> > perf-profile.children.cycles-pp.flush_work
> > 0.20 ± 5% -0.0 0.16 ± 11%
> > perf-profile.children.cycles-pp.reweight_entity
> > 0.06 ± 10% +0.0 0.10 ± 23%
> > perf-profile.children.cycles-pp.brd_lookup_page
> > 0.18 ± 5% +0.0 0.23 ± 13%
> > perf-profile.children.cycles-pp.__update_load_avg_se
> > 0.02 ±153% +0.1 0.07 ± 16%
> > perf-profile.children.cycles-pp.delay_tsc
> > 0.03 ±100% +0.1 0.08 ± 15%
> > perf-profile.children.cycles-pp.find_next_bit
> > 0.08 ± 5% +0.1 0.14 ± 14%
> > perf-profile.children.cycles-pp.native_write_msr
> > 0.29 ± 4% +0.1 0.36 ± 8%
> > perf-profile.children.cycles-pp.__orc_find
> > 0.40 ± 4% +0.1 0.46 ± 7%
> > perf-profile.children.cycles-pp.dequeue_task_fair
> > 0.11 ± 11% +0.1 0.18 ± 14%
> > perf-profile.children.cycles-pp.__module_text_address
> > 0.12 ± 8% +0.1 0.19 ± 13%
> > perf-profile.children.cycles-pp.is_module_text_address
> > 0.04 ± 50% +0.1 0.12 ± 19%
> > perf-profile.children.cycles-pp.kmem_cache_alloc
> > 0.00 +0.1 0.08 ± 11%
> > perf-profile.children.cycles-pp.clear_page_erms
> > 0.00 +0.1 0.08 ± 28%
> > perf-profile.children.cycles-pp.__indirect_thunk_start
> > 0.01 ±200% +0.1 0.10 ± 25%
> > perf-profile.children.cycles-pp.xfs_trans_alloc
> > 0.00 +0.1 0.09 ± 18%
> > perf-profile.children.cycles-pp.md_wakeup_thread
> > 0.00 +0.1 0.09 ± 26%
> > perf-profile.children.cycles-pp.rebalance_domains
> > 0.00 +0.1 0.09 ± 26%
> > perf-profile.children.cycles-pp.get_next_timer_interrupt
> > 0.00 +0.1 0.09 ± 20%
> > perf-profile.children.cycles-pp.ktime_get
> > 0.18 ± 4% +0.1 0.27 ± 12%
> > perf-profile.children.cycles-pp.idle_cpu
> > 0.20 ± 6% +0.1 0.30 ± 9%
> > perf-profile.children.cycles-pp.unwind_get_return_address
> > 0.16 ± 10% +0.1 0.25 ± 13%
> > perf-profile.children.cycles-pp.__module_address
> > 0.03 ±100% +0.1 0.13 ± 8%
> > perf-profile.children.cycles-pp.brd_insert_page
> > 0.06 ± 9% +0.1 0.16 ± 14%
> > perf-profile.children.cycles-pp.task_tick_fair
> > 0.08 ± 12% +0.1 0.18 ± 24%
> > perf-profile.children.cycles-pp.bio_alloc_bioset
> > 0.03 ± 81% +0.1 0.14 ± 27%
> > perf-profile.children.cycles-pp.generic_make_request_checks
> > 0.17 ± 7% +0.1 0.28 ± 11%
> > perf-profile.children.cycles-pp.__kernel_text_address
> > 0.11 ± 9% +0.1 0.22 ± 15%
> > perf-profile.children.cycles-pp.wake_up_page_bit
> > 0.16 ± 6% +0.1 0.27 ± 10%
> > perf-profile.children.cycles-pp.kernel_text_address
> > 0.00 +0.1 0.11 ± 11%
> > perf-profile.children.cycles-pp.get_page_from_freelist
> > 0.00 +0.1 0.11 ± 19%
> > perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
> > 0.00 +0.1 0.11 ± 7%
> > perf-profile.children.cycles-pp.__alloc_pages_nodemask
> > 0.08 ± 10% +0.1 0.19 ± 22%
> > perf-profile.children.cycles-pp.xfs_do_writepage
> > 0.25 ± 4% +0.1 0.37 ± 10%
> > perf-profile.children.cycles-pp.switch_mm_irqs_off
> > 0.00 +0.1 0.12 ± 13%
> > perf-profile.children.cycles-pp.switch_mm
> > 0.08 ± 38% +0.1 0.20 ± 19%
> > perf-profile.children.cycles-pp.io_serial_in
> > 0.18 ± 5% +0.1 0.31 ± 7%
> > perf-profile.children.cycles-pp.dequeue_entity
> > 0.00 +0.1 0.13 ± 26%
> > perf-profile.children.cycles-pp.tick_nohz_next_event
> > 0.06 ± 11% +0.1 0.19 ± 19%
> > perf-profile.children.cycles-pp.mempool_alloc
> > 0.32 ± 5% +0.1 0.45 ± 6%
> > perf-profile.children.cycles-pp.orc_find
> > 0.15 ± 10% +0.1 0.29 ± 19%
> > perf-profile.children.cycles-pp.xfs_destroy_ioend
> > 0.15 ± 11% +0.1 0.30 ± 18%
> > perf-profile.children.cycles-pp.call_bio_endio
> > 0.08 ± 17% +0.2 0.23 ± 25%
> > perf-profile.children.cycles-pp.xlog_state_done_syncing
> > 0.00 +0.2 0.15 ± 22%
> > perf-profile.children.cycles-pp.tick_nohz_get_sleep_length
> > 0.12 ± 8% +0.2 0.27 ± 23%
> > perf-profile.children.cycles-pp.write_cache_pages
> > 0.10 ± 16% +0.2 0.26 ± 16%
> > perf-profile.children.cycles-pp.wait_for_xmitr
> > 0.10 ± 19% +0.2 0.25 ± 14%
> > perf-profile.children.cycles-pp.serial8250_console_putchar
> > 0.10 ± 17% +0.2 0.26 ± 13%
> > perf-profile.children.cycles-pp.uart_console_write
> > 0.10 ± 16% +0.2 0.26 ± 15%
> > perf-profile.children.cycles-pp.serial8250_console_write
> > 0.11 ± 15% +0.2 0.27 ± 15%
> > perf-profile.children.cycles-pp.console_unlock
> > 0.09 ± 9% +0.2 0.26 ± 12%
> > perf-profile.children.cycles-pp.scheduler_tick
> > 0.10 ± 18% +0.2 0.28 ± 15%
> > perf-profile.children.cycles-pp.irq_work_run_list
> > 0.10 ± 15% +0.2 0.28 ± 14%
> > perf-profile.children.cycles-pp.xlog_state_do_callback
> > 0.09 ± 12% +0.2 0.27 ± 16%
> > perf-profile.children.cycles-pp.irq_work_run
> > 0.09 ± 12% +0.2 0.27 ± 16%
> > perf-profile.children.cycles-pp.printk
> > 0.09 ± 12% +0.2 0.27 ± 16%
> > perf-profile.children.cycles-pp.vprintk_emit
> > 0.09 ± 12% +0.2 0.27 ± 17%
> > perf-profile.children.cycles-pp.irq_work_interrupt
> > 0.09 ± 12% +0.2 0.27 ± 17%
> > perf-profile.children.cycles-pp.smp_irq_work_interrupt
> > 0.00 +0.2 0.18 ± 16%
> > perf-profile.children.cycles-pp.poll_idle
> > 0.30 ± 4% +0.2 0.49 ± 11%
> > perf-profile.children.cycles-pp.update_load_avg
> > 1.39 ± 2% +0.2 1.59 ± 6%
> > perf-profile.children.cycles-pp.__save_stack_trace
> > 1.43 +0.2 1.65 ± 6%
> > perf-profile.children.cycles-pp.save_stack_trace_tsk
> > 0.14 ± 13% +0.2 0.36 ± 13%
> > perf-profile.children.cycles-pp.update_process_times
> > 0.00 +0.2 0.23 ± 22%
> > perf-profile.children.cycles-pp.find_busiest_group
> > 0.22 ± 6% +0.2 0.45 ± 18%
> > perf-profile.children.cycles-pp.brd_do_bvec
> > 0.14 ± 13% +0.2 0.38 ± 14%
> > perf-profile.children.cycles-pp.tick_sched_handle
> > 0.10 ± 8% +0.2 0.34 ± 26%
> > perf-profile.children.cycles-pp.xfs_log_commit_cil
> > 0.07 ± 10% +0.3 0.33 ± 23%
> > perf-profile.children.cycles-pp.io_schedule
> > 0.03 ± 83% +0.3 0.29 ± 27%
> > perf-profile.children.cycles-pp.__softirqentry_text_start
> > 0.11 ± 5% +0.3 0.36 ± 25%
> > perf-profile.children.cycles-pp.__xfs_trans_commit
> > 0.06 ± 36% +0.3 0.31 ± 26%
> > perf-profile.children.cycles-pp.irq_exit
> > 0.08 ± 9% +0.3 0.35 ± 23%
> > perf-profile.children.cycles-pp.wait_on_page_bit_common
> > 0.15 ± 12% +0.3 0.42 ± 14%
> > perf-profile.children.cycles-pp.tick_sched_timer
> > 0.10 ± 11% +0.3 0.39 ± 22%
> > perf-profile.children.cycles-pp.__filemap_fdatawait_range
> > 0.06 ± 12% +0.3 0.37 ± 9%
> > perf-profile.children.cycles-pp.schedule_idle
> > 0.02 ±153% +0.3 0.34 ± 17%
> > perf-profile.children.cycles-pp.menu_select
> > 0.17 ± 5% +0.3 0.49 ± 22%
> > perf-profile.children.cycles-pp.xfs_vn_update_time
> > 0.19 ± 12% +0.3 0.51 ± 18%
> > perf-profile.children.cycles-pp.xlog_iodone
> > 0.18 ± 5% +0.3 0.51 ± 22%
> > perf-profile.children.cycles-pp.file_update_time
> > 0.18 ± 5% +0.3 0.51 ± 21%
> > perf-profile.children.cycles-pp.xfs_file_aio_write_checks
> > 0.21 ± 11% +0.4 0.60 ± 15%
> > perf-profile.children.cycles-pp.__hrtimer_run_queues
> > 0.26 ± 6% +0.4 0.69 ± 16%
> > perf-profile.children.cycles-pp.pick_next_task_fair
> > 1.20 ± 2% +0.4 1.64 ± 10%
> > perf-profile.children.cycles-pp.schedule
> > 0.28 ± 5% +0.4 0.72 ± 21%
> > perf-profile.children.cycles-pp.xfs_file_buffered_aio_write
> > 0.00 +0.4 0.44 ± 22%
> > perf-profile.children.cycles-pp.load_balance
> > 0.25 ± 8% +0.5 0.74 ± 15%
> > perf-profile.children.cycles-pp.hrtimer_interrupt
> > 1.30 ± 2% +0.7 2.00 ± 9%
> > perf-profile.children.cycles-pp.__schedule
> > 0.31 ± 8% +0.8 1.09 ± 16%
> > perf-profile.children.cycles-pp.smp_apic_timer_interrupt
> > 0.31 ± 8% +0.8 1.09 ± 16%
> > perf-profile.children.cycles-pp.apic_timer_interrupt
> > 3.92 ± 2% +0.9 4.79 ± 6%
> > perf-profile.children.cycles-pp.ret_from_fork
> > 3.92 ± 2% +0.9 4.79 ± 6%
> > perf-profile.children.cycles-pp.kthread
> > 0.69 ± 2% +0.9 1.64 ± 23%
> > perf-profile.children.cycles-pp.xlog_wait
> > 0.08 ± 13% +1.2 1.27 ± 17%
> > perf-profile.children.cycles-pp.submit_flushes
> > 0.16 ± 9% +1.6 1.74 ± 4%
> > perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
> > 0.17 ± 9% +2.0 2.16 ± 10%
> > perf-profile.children.cycles-pp.raid_end_bio_io
> > 0.21 ± 6% +2.0 2.25 ± 10%
> > perf-profile.children.cycles-pp.raid1_end_write_request
> > 2.24 ± 4% +2.2 4.44 ± 15%
> > perf-profile.children.cycles-pp.xfs_log_force_lsn
> > 0.46 ± 6% +2.3 2.73 ± 7%
> > perf-profile.children.cycles-pp.brd_make_request
> > 0.51 ± 6% +2.3 2.81 ± 7%
> > perf-profile.children.cycles-pp.md_thread
> > 0.49 ± 6% +2.3 2.81 ± 7%
> > perf-profile.children.cycles-pp.raid1d
> > 0.49 ± 6% +2.3 2.81 ± 7%
> > perf-profile.children.cycles-pp.flush_pending_writes
> > 0.49 ± 6% +2.3 2.81 ± 7%
> > perf-profile.children.cycles-pp.flush_bio_list
> > 1.80 ± 3% +5.6 7.44 ± 27%
> > perf-profile.children.cycles-pp._raw_spin_lock
> > 2.12 ± 4% +5.8 7.97 ± 20%
> > perf-profile.children.cycles-pp.remove_wait_queue
> > 1.33 ± 4% +8.8 10.12 ± 8%
> > perf-profile.children.cycles-pp.intel_idle
> > 1.37 ± 4% +9.3 10.71 ± 8%
> > perf-profile.children.cycles-pp.cpuidle_enter_state
> > 1.59 ± 4% +10.4 11.98 ± 9%
> > perf-profile.children.cycles-pp.start_secondary
> > 1.63 ± 4% +10.8 12.47 ± 8%
> > perf-profile.children.cycles-pp.secondary_startup_64
> > 1.63 ± 4% +10.8 12.47 ± 8%
> > perf-profile.children.cycles-pp.cpu_startup_entry
> > 1.63 ± 4% +10.9 12.49 ± 8%
> > perf-profile.children.cycles-pp.do_idle
> > 3.48 +12.2 15.72 ± 23%
> > perf-profile.children.cycles-pp.__xfs_log_force_lsn
> > 1.36 ± 12% +57.8 59.12 ± 10%
> > perf-profile.children.cycles-pp.prepare_to_wait_event
> > 0.43 ± 38% +62.4 62.82 ± 8%
> > perf-profile.children.cycles-pp.xfs_submit_ioend
> > 0.55 ± 29% +62.5 63.10 ± 8%
> > perf-profile.children.cycles-pp.xfs_vm_writepages
> > 0.55 ± 30% +62.5 63.10 ± 8%
> > perf-profile.children.cycles-pp.do_writepages
> > 0.55 ± 29% +62.6 63.11 ± 8%
> > perf-profile.children.cycles-pp.__filemap_fdatawrite_range
> > 0.66 ± 25% +62.9 63.52 ± 7%
> > perf-profile.children.cycles-pp.file_write_and_wait_range
> > 0.39 ± 43% +63.6 64.02 ± 8%
> > perf-profile.children.cycles-pp.raid1_write_request
> > 5.43 ± 3% +64.2 69.64 ± 5%
> > perf-profile.children.cycles-pp._raw_spin_lock_irqsave
> > 89.86 -13.5 76.31 ± 2%
> > perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
> > 0.14 ± 8% -0.0 0.09 ± 19%
> > perf-profile.self.cycles-pp.md_flush_request
> > 0.10 ± 12% -0.0 0.07 ± 21%
> > perf-profile.self.cycles-pp.account_entity_enqueue
> > 0.06 ± 7% +0.0 0.08 ± 12%
> > perf-profile.self.cycles-pp.pick_next_task_fair
> > 0.05 ± 12% +0.0 0.08 ± 18%
> > perf-profile.self.cycles-pp.___perf_sw_event
> > 0.15 ± 6% +0.0 0.18 ± 9%
> > perf-profile.self.cycles-pp.__update_load_avg_se
> > 0.17 ± 4% +0.0 0.22 ± 10%
> > perf-profile.self.cycles-pp.__schedule
> > 0.10 ± 11% +0.1 0.15 ± 11%
> > perf-profile.self.cycles-pp._raw_spin_lock
> > 0.02 ±153% +0.1 0.07 ± 16%
> > perf-profile.self.cycles-pp.delay_tsc
> > 0.02 ±152% +0.1 0.07 ± 23%
> > perf-profile.self.cycles-pp.set_next_entity
> > 0.03 ±100% +0.1 0.08 ± 15%
> > perf-profile.self.cycles-pp.find_next_bit
> > 0.08 ± 5% +0.1 0.14 ± 14%
> > perf-profile.self.cycles-pp.native_write_msr
> > 0.01 ±200% +0.1 0.07 ± 23%
> > perf-profile.self.cycles-pp.kmem_cache_alloc
> > 0.29 ± 4% +0.1 0.36 ± 8%
> > perf-profile.self.cycles-pp.__orc_find
> > 0.14 ± 7% +0.1 0.21 ± 12%
> > perf-profile.self.cycles-pp.switch_mm_irqs_off
> > 0.00 +0.1 0.08 ± 11%
> > perf-profile.self.cycles-pp.clear_page_erms
> > 0.00 +0.1 0.08 ± 28%
> > perf-profile.self.cycles-pp.__indirect_thunk_start
> > 0.00 +0.1 0.08 ± 20%
> > perf-profile.self.cycles-pp.md_wakeup_thread
> > 0.34 ± 6% +0.1 0.43 ± 12%
> > perf-profile.self.cycles-pp._raw_spin_lock_irqsave
> > 0.18 ± 4% +0.1 0.27 ± 12%
> > perf-profile.self.cycles-pp.idle_cpu
> > 0.16 ± 10% +0.1 0.25 ± 13%
> > perf-profile.self.cycles-pp.__module_address
> > 0.06 ± 11% +0.1 0.17 ± 14%
> > perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
> > 0.08 ± 38% +0.1 0.20 ± 19%
> > perf-profile.self.cycles-pp.io_serial_in
> > 0.18 ± 5% +0.1 0.32 ± 15%
> > perf-profile.self.cycles-pp.update_load_avg
> > 0.00 +0.1 0.15 ± 17%
> > perf-profile.self.cycles-pp.poll_idle
> > 0.00 +0.2 0.15 ± 16%
> > perf-profile.self.cycles-pp.menu_select
> > 0.00 +0.2 0.18 ± 24%
> > perf-profile.self.cycles-pp.find_busiest_group
> > 0.02 ±152% +0.3 0.35 ± 21%
> > perf-profile.self.cycles-pp.raid1_write_request
> > 1.33 ± 4% +8.8 10.12 ± 8%
> > perf-profile.self.cycles-pp.intel_idle
> >
> >
> >
> > aim7.jobs-per-min
> >
> > 1700
> > +-+------------------------------------------------------------------+
> > |+ ++++++ :+ ++++ ++++ +++ ++++++ + + ++++++++++++ ++
> > |++|
> > 1600 +-+ + +++ + +++++ ++.++ + ++ ++ + ++
> > |
> > | |
> > | |
> > 1500 +-+
> > |
> > | |
> > 1400 +-+
> > |
> > | |
> > 1300 +-+
> > |
> > | |
> > O OO OO O O O
> > |
> > 1200 +OO OOOOOOOOO OO OOOOOOOOOOOOOO OOOOOOOOO O
> > |
> > | |
> > 1100
> > +-+------------------------------------------------------------------+
> >
> >
> >
> > [*] 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
>
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