Re: [LKP] [locking/rwsem] 617f3ef951: unixbench.score -21.2% regression

From: Xing Zhengjun
Date: Wed Dec 23 2020 - 02:39:45 EST

Next message: Christoph Hellwig: "Re: [PATCH] erofs: support direct IO for uncompressed file"
Previous message: Alexandru Ardelean: "Re: [PATCH v6 1/2] lib/string.c: add __sysfs_match_string_with_gaps() helper"
In reply to: kernel test robot: "[locking/rwsem] 617f3ef951: unixbench.score -21.2% regression"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi Waiman,

Do you have time to look at this? Thanks.
As you describe in commit: 617f3ef95177840c77f59c2aec1029d27d5547d6 ("locking/rwsem: Remove reader optimistic spinning"), The patch that disables reader optimistic spinning shows reduced performance at lightly loaded cases, so for this regression, Is it as expected?

On 12/17/2020 9:33 AM, kernel test robot wrote:

Greeting,

FYI, we noticed a -21.2% regression of unixbench.score due to commit:

commit: 617f3ef95177840c77f59c2aec1029d27d5547d6 ("locking/rwsem: Remove reader optimistic spinning")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: unixbench
on test machine: 16 threads Intel(R) Xeon(R) E-2278G CPU @ 3.40GHz with 32G memory
with following parameters:

runtime: 300s
nr_task: 30%
test: shell8
cpufreq_governor: performance
ucode: 0xde

test-description: UnixBench is the original BYTE UNIX benchmark suite aims to test performance of Unix-like system.
test-url: https://github.com/kdlucas/byte-unixbench

If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>

Details are as below:
-------------------------------------------------------------------------------------------------->

To reproduce:

git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml

=========================================================================================
compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-8.3/30%/debian-10.4-x86_64-20200603.cgz/300s/lkp-cfl-e1/shell8/unixbench/0xde

commit:
1a728dff85 ("locking/rwsem: Enable reader optimistic lock stealing")
617f3ef951 ("locking/rwsem: Remove reader optimistic spinning")

1a728dff855a318b 617f3ef95177840c77f59c2aec1
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
39:4 -992% :4 perf-profile.calltrace.cycles-pp.error_entry
25:4 -635% :4 perf-profile.children.cycles-pp.error_entry
%stddev %change %stddev
\ | \
21807 ± 3% -21.2% 17186 unixbench.score
1287072 ± 3% -38.7% 788414 unixbench.time.involuntary_context_switches
37161 ± 4% +31.3% 48798 unixbench.time.major_page_faults
1.047e+08 ± 3% -21.1% 82610985 unixbench.time.minor_page_faults
1341 -27.1% 978.00 unixbench.time.percent_of_cpu_this_job_got
370.87 -33.3% 247.55 unixbench.time.system_time
490.05 -23.3% 376.03 unixbench.time.user_time
3083520 ± 3% +59.7% 4924900 unixbench.time.voluntary_context_switches
824314 ± 3% -21.2% 649654 unixbench.workload
0.03 ± 27% -51.9% 0.02 ± 59% perf-sched.sch_delay.avg.ms.schedule_timeout.rcu_gp_kthread.kthread.ret_from_fork
385.15 ± 2% +62.5% 625.72 uptime.idle
17.03 -1.8% 16.73 boot-time.boot
11.01 -1.6% 10.83 boot-time.dhcp
214.12 ± 3% -3.1% 207.49 boot-time.idle
13.72 ± 4% +23.5 37.24 mpstat.cpu.all.idle%
1.06 -0.1 0.94 mpstat.cpu.all.irq%
49.32 ± 2% -11.8 37.53 mpstat.cpu.all.sys%
35.24 ± 2% -11.6 23.68 mpstat.cpu.all.usr%
15.50 ± 3% +145.2% 38.00 vmstat.cpu.id
49.00 ± 2% -22.4% 38.00 vmstat.cpu.sy
33.75 ± 2% -33.3% 22.50 ± 2% vmstat.cpu.us
21.75 ± 3% -33.3% 14.50 ± 3% vmstat.procs.r
97370 ± 3% +56.4% 152258 vmstat.system.cs
37589 -2.1% 36804 vmstat.system.in
11861 ± 9% -18.0% 9730 slabinfo.filp.active_objs
13242 ± 8% -15.5% 11184 slabinfo.filp.num_objs
14731 ± 7% -9.5% 13325 ± 5% slabinfo.kmalloc-8.active_objs
14731 ± 7% -9.5% 13325 ± 5% slabinfo.kmalloc-8.num_objs
5545 ± 2% -13.8% 4780 ± 4% slabinfo.pid.active_objs
5563 ± 2% -13.8% 4793 ± 4% slabinfo.pid.num_objs
5822 ± 14% -40.4% 3468 ± 5% slabinfo.task_delay_info.active_objs
5825 ± 14% -40.5% 3468 ± 5% slabinfo.task_delay_info.num_objs
32104492 ± 3% +303.3% 1.295e+08 ± 11% cpuidle.C1.time
882330 ± 5% +131.5% 2042656 ± 10% cpuidle.C1.usage
21965263 ± 3% +340.5% 96762398 ± 14% cpuidle.C1E.time
442911 ± 2% +211.3% 1378866 ± 14% cpuidle.C1E.usage
6511399 ± 4% +606.6% 46010023 ± 13% cpuidle.C3.time
66498 ± 5% +559.3% 438404 ± 9% cpuidle.C3.usage
101453 ± 18% +139.9% 243422 ± 7% cpuidle.C6.usage
11612925 ± 66% +228.1% 38105483 ± 21% cpuidle.C8.time
12182 ± 65% +220.7% 39070 ± 21% cpuidle.C8.usage
173670 ± 30% +166.5% 462831 ± 7% cpuidle.POLL.time
17441 ± 18% +195.6% 51559 ± 6% cpuidle.POLL.usage
59652 +0.6% 60011 proc-vmstat.nr_inactive_anon
5840 +1.4% 5922 proc-vmstat.nr_kernel_stack
1404 +3.1% 1447 proc-vmstat.nr_page_table_pages
13255 -1.7% 13026 proc-vmstat.nr_slab_reclaimable
14861 -6.9% 13835 ± 4% proc-vmstat.nr_slab_unreclaimable
59652 +0.6% 60011 proc-vmstat.nr_zone_inactive_anon
70705198 ± 3% -21.1% 55762717 proc-vmstat.numa_hit
70705198 ± 3% -21.1% 55762717 proc-vmstat.numa_local
116793 ± 3% -32.1% 79354 proc-vmstat.pgactivate
74803470 ± 3% -20.7% 59317396 proc-vmstat.pgalloc_normal
1.049e+08 ± 3% -21.1% 82849276 proc-vmstat.pgfault
74776100 ± 3% -20.7% 59288922 proc-vmstat.pgfree
5338118 ± 3% -24.5% 4030373 proc-vmstat.pgreuse
3413 ± 2% -19.6% 2745 proc-vmstat.thp_fault_alloc
1466090 ± 3% -21.2% 1155570 proc-vmstat.unevictable_pgs_culled
382612 ± 60% -66.4% 128559 ± 7% sched_debug.cfs_rq:/.load.max
274.29 ± 53% -48.2% 142.09 ± 15% sched_debug.cfs_rq:/.load_avg.avg
452211 -25.5% 336912 sched_debug.cfs_rq:/.min_vruntime.avg
489002 -22.6% 378258 ± 2% sched_debug.cfs_rq:/.min_vruntime.max
440439 -26.4% 324253 sched_debug.cfs_rq:/.min_vruntime.min
210358 ± 8% -21.6% 164917 ± 9% sched_debug.cpu.avg_idle.avg
666992 ± 9% -14.4% 571102 ± 3% sched_debug.cpu.avg_idle.max
183734 ± 2% -10.3% 164859 sched_debug.cpu.avg_idle.stddev
0.54 ± 19% -29.1% 0.38 ± 15% sched_debug.cpu.clock.stddev
199240 ± 3% +53.0% 304861 sched_debug.cpu.nr_switches.avg
215766 ± 3% +48.7% 320802 sched_debug.cpu.nr_switches.max
186135 ± 3% +55.3% 289040 sched_debug.cpu.nr_switches.min
82.12 ± 12% +247.2% 285.12 ± 11% sched_debug.cpu.nr_uninterruptible.max
-122.88 +312.6% -507.00 sched_debug.cpu.nr_uninterruptible.min
51.87 ± 13% +263.6% 188.58 ± 8% sched_debug.cpu.nr_uninterruptible.stddev
242600 ± 5% -33.6% 161055 softirqs.CPU0.RCU
15144 ± 2% +14.4% 17328 ± 3% softirqs.CPU0.SCHED
14371 +13.8% 16354 ± 3% softirqs.CPU1.SCHED
14064 ± 2% +10.1% 15480 softirqs.CPU10.SCHED
241990 ± 4% -33.1% 161882 softirqs.CPU11.RCU
13889 +12.7% 15650 softirqs.CPU11.SCHED
239184 ± 7% -33.4% 159310 softirqs.CPU12.RCU
13988 ± 3% +12.3% 15711 softirqs.CPU13.SCHED
13744 ± 2% +14.1% 15688 ± 2% softirqs.CPU14.SCHED
14104 +12.8% 15912 ± 2% softirqs.CPU2.SCHED
240729 ± 4% -32.5% 162396 softirqs.CPU3.RCU
14143 ± 2% +13.6% 16064 ± 3% softirqs.CPU3.SCHED
240581 ± 5% -31.9% 163890 softirqs.CPU4.RCU
13936 +10.5% 15402 softirqs.CPU5.SCHED
13761 ± 3% +12.9% 15532 softirqs.CPU6.SCHED
14059 +11.8% 15724 ± 2% softirqs.CPU7.SCHED
241270 ± 5% -34.5% 157931 ± 2% softirqs.CPU8.RCU
13695 +11.8% 15314 ± 2% softirqs.CPU8.SCHED
225021 +12.1% 252248 softirqs.SCHED
14.09 ± 73% -14.1 0.00 perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_openat2.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
14.09 ± 73% -14.1 0.00 perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_openat2.do_sys_open.do_syscall_64
10.52 ± 60% -10.5 0.00 perf-profile.calltrace.cycles-pp.setlocale
9.13 ±104% -9.1 0.00 perf-profile.calltrace.cycles-pp.free_pgtables.exit_mmap.mmput.do_exit.do_group_exit
8.43 ± 62% -8.4 0.00 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__open64_nocancel.setlocale
8.43 ± 62% -8.4 0.00 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__open64_nocancel.setlocale
8.43 ± 62% -8.4 0.00 perf-profile.calltrace.cycles-pp.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.__open64_nocancel.setlocale
8.43 ± 62% -8.4 0.00 perf-profile.calltrace.cycles-pp.do_sys_openat2.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.__open64_nocancel
8.43 ± 62% -8.4 0.00 perf-profile.calltrace.cycles-pp.__open64_nocancel.setlocale
6.35 ±101% -6.3 0.00 perf-profile.calltrace.cycles-pp.unlink_file_vma.free_pgtables.exit_mmap.mmput.do_exit
4.86 ±102% -4.9 0.00 perf-profile.calltrace.cycles-pp.terminate_walk.path_openat.do_filp_open.do_sys_openat2.do_sys_open
6.35 ±101% -3.6 2.78 ±173% perf-profile.calltrace.cycles-pp.exit_mmap.mmput.do_exit.do_group_exit.__x64_sys_exit_group
6.35 ±101% -3.6 2.78 ±173% perf-profile.calltrace.cycles-pp.mmput.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
7.98 ± 60% -3.0 5.00 ±173% perf-profile.calltrace.cycles-pp.exit_to_user_mode_prepare.syscall_exit_to_user_mode.entry_SYSCALL_64_after_hwframe
7.98 ± 60% -3.0 5.00 ±173% perf-profile.calltrace.cycles-pp.arch_do_signal.exit_to_user_mode_prepare.syscall_exit_to_user_mode.entry_SYSCALL_64_after_hwframe
7.98 ± 60% -3.0 5.00 ±173% perf-profile.calltrace.cycles-pp.do_group_exit.get_signal.arch_do_signal.exit_to_user_mode_prepare.syscall_exit_to_user_mode
7.98 ± 60% -3.0 5.00 ±173% perf-profile.calltrace.cycles-pp.do_exit.do_group_exit.get_signal.arch_do_signal.exit_to_user_mode_prepare
7.98 ± 60% -3.0 5.00 ±173% perf-profile.calltrace.cycles-pp.exit_mmap.mmput.do_exit.do_group_exit.get_signal
7.98 ± 60% -3.0 5.00 ±173% perf-profile.calltrace.cycles-pp.get_signal.arch_do_signal.exit_to_user_mode_prepare.syscall_exit_to_user_mode.entry_SYSCALL_64_after_hwframe
7.98 ± 60% -3.0 5.00 ±173% perf-profile.calltrace.cycles-pp.mmput.do_exit.do_group_exit.get_signal.arch_do_signal
7.98 ± 60% -3.0 5.00 ±173% perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.entry_SYSCALL_64_after_hwframe
6.35 ±101% -0.8 5.55 ±173% perf-profile.calltrace.cycles-pp.__x64_sys_exit_group.do_syscall_64.entry_SYSCALL_64_after_hwframe
6.35 ±101% -0.8 5.55 ±173% perf-profile.calltrace.cycles-pp.do_group_exit.__x64_sys_exit_group.do_syscall_64.entry_SYSCALL_64_after_hwframe
6.35 ±101% -0.8 5.55 ±173% perf-profile.calltrace.cycles-pp.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64.entry_SYSCALL_64_after_hwframe
14.09 ± 73% -14.1 0.00 perf-profile.children.cycles-pp.do_filp_open
14.09 ± 73% -14.1 0.00 perf-profile.children.cycles-pp.do_sys_open
14.09 ± 73% -14.1 0.00 perf-profile.children.cycles-pp.do_sys_openat2
14.09 ± 73% -14.1 0.00 perf-profile.children.cycles-pp.path_openat
10.52 ± 60% -10.5 0.00 perf-profile.children.cycles-pp.setlocale
9.13 ±104% -9.1 0.00 perf-profile.children.cycles-pp.free_pgtables
8.43 ± 62% -8.4 0.00 perf-profile.children.cycles-pp.__open64_nocancel
6.35 ±101% -6.3 0.00 perf-profile.children.cycles-pp.sync_regs
6.35 ±101% -6.3 0.00 perf-profile.children.cycles-pp.unlink_file_vma
4.86 ±102% -4.9 0.00 perf-profile.children.cycles-pp.terminate_walk
7.98 ± 60% -3.0 5.00 ±173% perf-profile.children.cycles-pp.exit_to_user_mode_prepare
7.98 ± 60% -3.0 5.00 ±173% perf-profile.children.cycles-pp.arch_do_signal
7.98 ± 60% -3.0 5.00 ±173% perf-profile.children.cycles-pp.get_signal
7.98 ± 60% -3.0 5.00 ±173% perf-profile.children.cycles-pp.syscall_exit_to_user_mode
6.35 ±101% -0.8 5.55 ±173% perf-profile.children.cycles-pp.__x64_sys_exit_group
5.65 ±106% -0.7 5.00 ±173% perf-profile.children.cycles-pp.__mod_memcg_lruvec_state
5.65 ±106% -0.1 5.55 ±173% perf-profile.children.cycles-pp.handle_mm_fault
6.35 ±101% -6.3 0.00 perf-profile.self.cycles-pp.sync_regs
31246 ± 5% +200.7% 93965 interrupts.CAL:Function_call_interrupts
2091 ± 11% +179.5% 5844 interrupts.CPU0.CAL:Function_call_interrupts
26624 ± 2% -20.9% 21057 interrupts.CPU0.RES:Rescheduling_interrupts
500.25 ± 7% +378.2% 2392 interrupts.CPU0.TLB:TLB_shootdowns
1931 ± 4% +201.7% 5827 interrupts.CPU1.CAL:Function_call_interrupts
26939 ± 4% -22.2% 20957 interrupts.CPU1.RES:Rescheduling_interrupts
499.25 ± 5% +374.8% 2370 ± 4% interrupts.CPU1.TLB:TLB_shootdowns
1967 ± 6% +195.8% 5820 interrupts.CPU10.CAL:Function_call_interrupts
26951 ± 2% -19.9% 21594 interrupts.CPU10.RES:Rescheduling_interrupts
546.25 +336.4% 2384 ± 4% interrupts.CPU10.TLB:TLB_shootdowns
1927 ± 3% +211.0% 5994 interrupts.CPU11.CAL:Function_call_interrupts
26619 ± 2% -18.7% 21630 interrupts.CPU11.RES:Rescheduling_interrupts
514.25 ± 6% +361.8% 2374 ± 2% interrupts.CPU11.TLB:TLB_shootdowns
1887 ± 9% +206.9% 5791 ± 4% interrupts.CPU12.CAL:Function_call_interrupts
26377 ± 4% -19.5% 21237 ± 2% interrupts.CPU12.RES:Rescheduling_interrupts
496.00 ± 3% +372.8% 2345 ± 2% interrupts.CPU12.TLB:TLB_shootdowns
1912 ± 7% +208.6% 5899 ± 2% interrupts.CPU13.CAL:Function_call_interrupts
27187 ± 4% -20.1% 21734 ± 2% interrupts.CPU13.RES:Rescheduling_interrupts
500.50 ± 5% +380.5% 2405 ± 3% interrupts.CPU13.TLB:TLB_shootdowns
1891 ± 7% +215.1% 5960 ± 2% interrupts.CPU14.CAL:Function_call_interrupts
26046 ± 4% -17.0% 21627 interrupts.CPU14.RES:Rescheduling_interrupts
506.25 ± 9% +367.9% 2368 ± 2% interrupts.CPU14.TLB:TLB_shootdowns
1960 ± 4% +195.8% 5798 interrupts.CPU15.CAL:Function_call_interrupts
26567 ± 4% -19.7% 21342 ± 2% interrupts.CPU15.RES:Rescheduling_interrupts
536.50 ± 3% +350.6% 2417 interrupts.CPU15.TLB:TLB_shootdowns
2001 ± 4% +190.3% 5811 ± 2% interrupts.CPU2.CAL:Function_call_interrupts
27172 ± 3% -21.5% 21338 interrupts.CPU2.RES:Rescheduling_interrupts
539.00 ± 4% +332.7% 2332 ± 3% interrupts.CPU2.TLB:TLB_shootdowns
1950 ± 6% +198.1% 5814 interrupts.CPU3.CAL:Function_call_interrupts
26579 ± 2% -19.2% 21479 interrupts.CPU3.RES:Rescheduling_interrupts
504.75 ± 8% +369.0% 2367 ± 4% interrupts.CPU3.TLB:TLB_shootdowns
1965 ± 10% +199.8% 5891 interrupts.CPU4.CAL:Function_call_interrupts
26811 ± 3% -19.8% 21512 interrupts.CPU4.RES:Rescheduling_interrupts
515.75 ± 5% +358.1% 2362 ± 2% interrupts.CPU4.TLB:TLB_shootdowns
1935 ± 7% +206.3% 5926 interrupts.CPU5.CAL:Function_call_interrupts
26997 ± 3% -20.4% 21486 interrupts.CPU5.RES:Rescheduling_interrupts
531.25 ± 3% +348.6% 2383 interrupts.CPU5.TLB:TLB_shootdowns
1904 ± 5% +214.0% 5979 interrupts.CPU6.CAL:Function_call_interrupts
26702 ± 4% -20.1% 21341 interrupts.CPU6.RES:Rescheduling_interrupts
505.25 ± 3% +354.6% 2296 ± 2% interrupts.CPU6.TLB:TLB_shootdowns
1933 ± 4% +205.3% 5901 interrupts.CPU7.CAL:Function_call_interrupts
26505 ± 3% -19.6% 21302 interrupts.CPU7.RES:Rescheduling_interrupts
494.00 ± 4% +371.1% 2327 ± 3% interrupts.CPU7.TLB:TLB_shootdowns
2003 ± 5% +190.5% 5818 interrupts.CPU8.CAL:Function_call_interrupts
26799 ± 3% -20.2% 21376 ± 2% interrupts.CPU8.RES:Rescheduling_interrupts
519.00 ± 4% +364.7% 2411 ± 4% interrupts.CPU8.TLB:TLB_shootdowns
1986 ± 10% +196.5% 5888 ± 2% interrupts.CPU9.CAL:Function_call_interrupts
26994 ± 3% -20.6% 21439 interrupts.CPU9.RES:Rescheduling_interrupts
526.00 ± 6% +351.8% 2376 interrupts.CPU9.TLB:TLB_shootdowns
427874 ± 3% -20.0% 342458 interrupts.RES:Rescheduling_interrupts
8234 ± 2% +360.4% 37914 ± 2% interrupts.TLB:TLB_shootdowns
47.20 +6.4% 50.22 perf-stat.i.MPKI
9.902e+09 ± 3% -19.6% 7.965e+09 perf-stat.i.branch-instructions
2.24 +0.1 2.32 perf-stat.i.branch-miss-rate%
2.143e+08 ± 3% -16.4% 1.791e+08 perf-stat.i.branch-misses
99172014 ± 2% -15.6% 83714922 perf-stat.i.cache-misses
2.363e+09 ± 3% -14.4% 2.022e+09 perf-stat.i.cache-references
101957 ± 3% +56.1% 159180 perf-stat.i.context-switches
1.20 ± 3% -5.8% 1.13 perf-stat.i.cpi
5.571e+10 -23.7% 4.249e+10 perf-stat.i.cpu-cycles
15111 ± 3% +116.2% 32667 perf-stat.i.cpu-migrations
610.84 ± 2% -10.2% 548.56 perf-stat.i.cycles-between-cache-misses
1.234e+10 ± 3% -19.7% 9.908e+09 perf-stat.i.dTLB-loads
0.05 +0.0 0.05 perf-stat.i.dTLB-store-miss-rate%
3568011 ± 3% -14.8% 3038208 perf-stat.i.dTLB-store-misses
7.127e+09 ± 3% -19.9% 5.706e+09 perf-stat.i.dTLB-stores
57.81 -2.0 55.78 perf-stat.i.iTLB-load-miss-rate%
10339942 ± 3% -16.8% 8603048 perf-stat.i.iTLB-load-misses
7643641 ± 3% -7.7% 7057126 perf-stat.i.iTLB-loads
4.833e+10 ± 3% -19.6% 3.887e+10 perf-stat.i.instructions
5183 -1.9% 5085 perf-stat.i.instructions-per-iTLB-miss
0.85 ± 4% +5.6% 0.90 perf-stat.i.ipc
577.76 ± 4% +32.0% 762.53 perf-stat.i.major-faults
3.48 -23.7% 2.66 perf-stat.i.metric.GHz
0.55 ± 44% -77.5% 0.12 ± 30% perf-stat.i.metric.K/sec
1986 ± 3% -19.3% 1602 perf-stat.i.metric.M/sec
1599403 ± 3% -20.7% 1268462 perf-stat.i.minor-faults
5321084 ± 3% -15.9% 4474662 perf-stat.i.node-loads
32016465 ± 3% -17.1% 26551337 perf-stat.i.node-stores
1599980 ± 3% -20.7% 1269225 perf-stat.i.page-faults
48.88 +6.4% 52.03 perf-stat.overall.MPKI
2.16 +0.1 2.25 perf-stat.overall.branch-miss-rate%
4.20 -0.1 4.14 perf-stat.overall.cache-miss-rate%
1.15 ± 4% -5.3% 1.09 perf-stat.overall.cpi
562.37 ± 3% -9.7% 507.65 perf-stat.overall.cycles-between-cache-misses
0.05 +0.0 0.05 perf-stat.overall.dTLB-store-miss-rate%
57.50 -2.6 54.94 perf-stat.overall.iTLB-load-miss-rate%
4674 -3.3% 4518 perf-stat.overall.instructions-per-iTLB-miss
0.87 ± 4% +5.4% 0.91 perf-stat.overall.ipc
9.742e+09 ± 3% -19.6% 7.836e+09 perf-stat.ps.branch-instructions
2.108e+08 ± 3% -16.5% 1.762e+08 perf-stat.ps.branch-misses
97569500 ± 2% -15.6% 82348192 perf-stat.ps.cache-misses
2.324e+09 ± 3% -14.4% 1.989e+09 perf-stat.ps.cache-references
100305 ± 3% +56.1% 156566 perf-stat.ps.context-switches
5.481e+10 -23.7% 4.18e+10 perf-stat.ps.cpu-cycles
14866 ± 3% +116.1% 32130 perf-stat.ps.cpu-migrations
1.214e+10 ± 3% -19.7% 9.746e+09 perf-stat.ps.dTLB-loads
3510146 ± 3% -14.9% 2988346 perf-stat.ps.dTLB-store-misses
7.012e+09 ± 3% -20.0% 5.612e+09 perf-stat.ps.dTLB-stores
10172369 ± 3% -16.8% 8461956 perf-stat.ps.iTLB-load-misses
7519764 ± 3% -7.7% 6941264 perf-stat.ps.iTLB-loads
4.755e+10 ± 3% -19.6% 3.823e+10 perf-stat.ps.instructions
568.39 ± 4% +32.0% 750.01 perf-stat.ps.major-faults
1573444 ± 3% -20.7% 1247622 perf-stat.ps.minor-faults
5235200 ± 3% -15.9% 4401366 perf-stat.ps.node-loads
31497428 ± 3% -17.1% 26115335 perf-stat.ps.node-stores
1574012 ± 3% -20.7% 1248372 perf-stat.ps.page-faults
3.111e+12 ± 3% -20.5% 2.473e+12 perf-stat.total.instructions

unixbench.time.user_time
500 +---------------------------------------------------------------------+
|. +..+..+ +..+..+.+..+..+.+..+..+.+..+..+.+..+..+..+.+..+..+.+..|
480 |-+ |
| |
460 |-+ |
| |
440 |-+ |
| |
420 |-+ |
| |
400 |-+ |
| |
380 |-+ O O O O |
| O O O O O O O O O O O O O O |
360 +---------------------------------------------------------------------+
unixbench.time.system_time
380 +---------------------------------------------------------------------+
|..+.+..+..+.+..+..+..+.+..+. +. +.+..+..+.+..+..+..+.+. +.+..|
360 |-+ |
| |
340 |-+ |
| |
320 |-+ |
| |
300 |-+ |
| |
280 |-+ |
| |
260 |-+ O |
| O O O O O O O O O O O O O O O O O |
240 +---------------------------------------------------------------------+
unixbench.time.percent_of_cpu_this_job_got
1400 +--------------------------------------------------------------------+
|..+.+..+..+.+.. .+.. .+.+..+..+.+..+.+..+..+.+..+..+. |
1350 |-+ +..+ +. +..+..+.+..|
1300 |-+ |
| |
1250 |-+ |
1200 |-+ |
| |
1150 |-+ |
1100 |-+ |
| |
1050 |-+ |
1000 |-+ |
| O O O O O O O O O O O O O O O O O O |
950 +--------------------------------------------------------------------+
unixbench.time.minor_page_faults
1.1e+08 +----------------------------------------------------------------+
|..+.+..+.+..+.+..+.+..+.+ + +..+.+..+.+..+.+ + +..+.|
1.05e+08 |-+ : :: : : :: : |
| : : : : : : : : |
1e+08 |-+ : : : : : : : : |
| + + + + |
9.5e+07 |-+ |
| |
9e+07 |-+ |
| |
8.5e+07 |-+ |
| O O O O O O O O O O O O O O O |
8e+07 |-+ |
| |
7.5e+07 +----------------------------------------------------------------+
unixbench.time.voluntary_context_switches
5e+06 +-----------------------------------------------------------------+
| O O O O O O O O O O O |
| O O |
4.5e+06 |-+ O |
| |
| |
4e+06 |-+ |
| |
3.5e+06 |-+ |
| |
| .+. .+.+..+.+..+. +.. +.+..+.+..+.+.. + +.+..|
3e+06 |.+ +..+.+. +.. + .. +. .. + .. |
| + + + + |
| |
2.5e+06 +-----------------------------------------------------------------+
unixbench.time.involuntary_context_switches
1.4e+06 +-----------------------------------------------------------------+
|..+.+..+.+..+.+.. +.+.. +.. +.+..+.+..+.+..+ + + |
1.3e+06 |-+ .. + .. + .. + .. + ..|
| +.+ + + + + + |
1.2e+06 |-+ |
| |
1.1e+06 |-+ |
| |
1e+06 |-+ |
| |
900000 |-+ |
| |
800000 |-+O O O O O O O O O O O O O O |
| O O O O |
700000 +-----------------------------------------------------------------+
unixbench.score
23000 +-------------------------------------------------------------------+
|..+.+..+.+..+..+.+..+..+.+ + +.+..+.+..+..+.+ + +.+..|
22000 |-+ + : : : : : : : |
21000 |-+ + : : : : : : : |
| + : : : : :: |
20000 |-+ + + + |
| |
19000 |-+ |
| |
18000 |-+ |
17000 |-+O O O O O O O O O O O O |
| O O O |
16000 |-+ |
| O O O |
15000 +-------------------------------------------------------------------+
unixbench.workload
900000 +------------------------------------------------------------------+
| |
850000 |..+.+..+.+..+.+..+..+.+..+ + +..+.+..+.+..+..+ + +.+..|
| : + + : : + : + |
800000 |-+ : + + : : + : + |
| + + + + |
750000 |-+ |
| |
700000 |-+ |
| |
650000 |-+O O O O O O O O O O O O O O O |
| |
600000 |-+ O O O |
| |
550000 +------------------------------------------------------------------+
[*] 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,
Oliver Sang

_______________________________________________
LKP mailing list -- lkp@xxxxxxxxxxxx
To unsubscribe send an email to lkp-leave@xxxxxxxxxxxx

--
Zhengjun Xing

Next message: Christoph Hellwig: "Re: [PATCH] erofs: support direct IO for uncompressed file"
Previous message: Alexandru Ardelean: "Re: [PATCH v6 1/2] lib/string.c: add __sysfs_match_string_with_gaps() helper"
In reply to: kernel test robot: "[locking/rwsem] 617f3ef951: unixbench.score -21.2% regression"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]