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Date: Fri, 16 Sep 2016 22:11:14 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Rik van Riel <riel@...hat.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org
Subject: [lkp] [sched/numa, mm] d59dc7bcfa: No primary change:
reaim.time.voluntary_context_switches +110.7%
reaim.time.voluntary_context_switches +110.7%
Reply-To: kernel test robot <xiaolong.ye@...el.com>
User-Agent: Heirloom mailx 12.5 6/20/10
FYI, we noticed reaim.time.voluntary_context_switches +110.7% due to commit:
commit d59dc7bcfa649ef2128a76b6487b16f4b3f14d23 ("sched/numa, mm: Revert to checking pmd/pte_write instead of VMA flags")
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
in testcase: reaim
on test machine: 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory
with following parameters:
runtime: 300s
nr_task: 100%
nr_job: 10000
test: short
cpufreq_governor: performance
REAIM is an updated and improved version of AIM 7 benchmark.
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.
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
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_job/nr_task/rootfs/runtime/tbox_group/test/testcase:
gcc-6/performance/x86_64-rhel-7.2/10000/100%/debian-x86_64-2016-08-31.cgz/300s/lkp-hsw-ep2/short/reaim
commit:
b95202a3b6 ("sched/deadline: Document behavior of sched_yield()")
d59dc7bcfa ("sched/numa, mm: Revert to checking pmd/pte_write instead of VMA flags")
b95202a3b6bb8715 d59dc7bcfa649ef2128a76b648
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
%stddev %change %stddev
\ | \
2.06 ± 1% -2.7% 2.00 ± 0% reaim.std_dev_percent
328520 ± 6% +110.7% 692172 ± 2% reaim.time.voluntary_context_switches
1078864 ± 1% +332.2% 4662990 ± 1% interrupts.CAL:Function_call_interrupts
20354 ± 7% +37.5% 27995 ± 6% meminfo.Shmem
186030 ± 2% +22.9% 228590 ± 1% softirqs.SCHED
6511 ± 1% +36.6% 8893 ± 1% vmstat.system.cs
77823 ± 0% +16.6% 90739 ± 0% vmstat.system.in
3386 ± 6% -13.6% 2925 ± 4% numa-meminfo.node0.PageTables
819.33 ± 39% +516.0% 5047 ± 81% numa-meminfo.node1.Inactive(anon)
7767 ± 0% +32.0% 10249 ± 23% numa-meminfo.node1.Mapped
2853 ± 8% +16.9% 3336 ± 4% numa-meminfo.node1.PageTables
849.00 ± 6% -13.8% 732.25 ± 4% numa-vmstat.node0.nr_page_table_pages
204.33 ± 39% +517.3% 1261 ± 82% numa-vmstat.node1.nr_inactive_anon
715.33 ± 9% +16.4% 832.75 ± 4% numa-vmstat.node1.nr_page_table_pages
204.33 ± 39% +517.3% 1261 ± 82% numa-vmstat.node1.nr_zone_inactive_anon
1.58 ± 3% +11.1% 1.76 ± 4% perf-profile.children.cycles-pp.__do_page_fault
1.61 ± 2% +11.6% 1.80 ± 5% perf-profile.children.cycles-pp.do_page_fault
1.21 ± 3% +14.6% 1.39 ± 5% perf-profile.children.cycles-pp.handle_mm_fault
1.62 ± 2% +11.6% 1.81 ± 4% perf-profile.children.cycles-pp.page_fault
18555610 ± 5% +142.8% 45052001 ± 2% cpuidle.C1-HSW.time
284802 ± 5% +148.3% 707062 ± 2% cpuidle.C1-HSW.usage
10511856 ± 4% +100.4% 21062895 ± 8% cpuidle.C1E-HSW.time
84157 ± 2% +152.3% 212324 ± 1% cpuidle.C1E-HSW.usage
5259 ± 3% +197.5% 15647 ± 0% cpuidle.POLL.usage
125636 ± 0% +285.1% 483761 ± 1% latency_stats.hits.wait_on_page_bit.__migration_entry_wait.migration_entry_wait.do_swap_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault
10887 ± 85% -98.7% 141.25 ±109% latency_stats.max.call_rwsem_down_write_failed.unlink_file_vma.free_pgtables.unmap_region.do_munmap.SyS_munmap.do_syscall_64.return_from_SYSCALL_64
2007 ± 64% +281.0% 7649 ± 37% latency_stats.max.wait_on_page_bit.__migration_entry_wait.migration_entry_wait.do_swap_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault
10975 ± 85% -97.9% 234.75 ±102% latency_stats.sum.call_rwsem_down_write_failed.unlink_file_vma.free_pgtables.unmap_region.do_munmap.SyS_munmap.do_syscall_64.return_from_SYSCALL_64
13269626 ± 0% +293.0% 52145660 ± 1% latency_stats.sum.max
13202213 ± 1% +295.0% 52145660 ± 1% latency_stats.sum.wait_on_page_bit.__migration_entry_wait.migration_entry_wait.do_swap_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault
1970029 ± 2% +37.0% 2699350 ± 2% perf-stat.context-switches
83062 ± 3% +11.2% 92391 ± 2% perf-stat.cpu-migrations
0.01 ± 0% +5.1% 0.01 ± 3% perf-stat.dTLB-store-miss-rate%
4.265e+09 ± 1% +1.9% 4.345e+09 ± 0% perf-stat.iTLB-loads
2.228e+09 ± 0% +1.9% 2.271e+09 ± 0% perf-stat.node-load-misses
1.113e+09 ± 0% +1.3% 1.127e+09 ± 0% perf-stat.node-store-misses
4.582e+08 ± 1% +1.9% 4.669e+08 ± 0% perf-stat.node-stores
5092 ± 7% +37.3% 6991 ± 6% proc-vmstat.nr_shmem
435033 ± 0% -15.8% 366135 ± 0% proc-vmstat.numa_hint_faults
237335 ± 0% -13.7% 204706 ± 0% proc-vmstat.numa_hint_faults_local
41453 ± 2% +232.2% 137724 ± 1% proc-vmstat.numa_pages_migrated
7184 ± 9% +48.6% 10678 ± 3% proc-vmstat.pgactivate
1193 ± 2% +419.5% 6197 ± 1% proc-vmstat.pgmigrate_fail
41453 ± 2% +232.2% 137724 ± 1% proc-vmstat.pgmigrate_success
0.49 ± 8% -16.1% 0.41 ± 13% sched_debug.cfs_rq:/.nr_running.avg
6.79 ± 7% -19.5% 5.47 ± 12% sched_debug.cfs_rq:/.runnable_load_avg.avg
649539 ± 7% +9.4% 710821 ± 7% sched_debug.cpu.avg_idle.avg
6.62 ± 9% -19.9% 5.31 ± 13% sched_debug.cpu.cpu_load[0].avg
7.18 ± 9% -20.7% 5.70 ± 11% sched_debug.cpu.cpu_load[1].avg
7.10 ± 9% -20.6% 5.64 ± 12% sched_debug.cpu.cpu_load[2].avg
7.01 ± 8% -19.8% 5.62 ± 12% sched_debug.cpu.cpu_load[3].avg
6.96 ± 6% -19.2% 5.62 ± 12% sched_debug.cpu.cpu_load[4].avg
16907 ± 3% -17.0% 14029 ± 16% sched_debug.cpu.load.avg
460630 ± 22% -36.1% 294449 ± 35% sched_debug.cpu.load.max
0.52 ± 9% -18.4% 0.43 ± 14% sched_debug.cpu.nr_running.avg
14012 ± 2% +35.2% 18940 ± 2% sched_debug.cpu.nr_switches.avg
37653 ± 3% +13.4% 42694 ± 6% sched_debug.cpu.nr_switches.max
8357 ± 4% +44.7% 12093 ± 3% sched_debug.cpu.nr_switches.min
0.00 ±353% +650.0% 0.01 ± 67% sched_debug.cpu.nr_uninterruptible.avg
35378 ± 0% +14.0% 40319 ± 0% sched_debug.cpu.sched_count.avg
29104 ± 1% +12.7% 32810 ± 1% sched_debug.cpu.sched_count.min
3146 ± 4% +77.0% 5568 ± 2% sched_debug.cpu.sched_goidle.avg
1931 ± 4% +114.4% 4141 ± 2% sched_debug.cpu.sched_goidle.min
40729 ± 2% +9.8% 44726 ± 4% sched_debug.cpu.ttwu_count.max
0.02 ± 3% +8.0% 0.02 ± 2% sched_debug.rt_rq:/.rt_time.avg
perf-stat.context-switches
3e+06 ++----------------------------------------------------------------+
| O O O O O O O O O |
2.5e+06 O+ O O O O |
| |
| .*. .*..*. .*.. .*..*..*.*..* *.. .*.. |
2e+06 *+. .*..*.*. *. *. * : : * * *..*
| *.*. : : : : |
1.5e+06 ++ : : : : |
| : : : : |
1e+06 ++ : : : : |
| : : : : |
| : : : : |
500000 ++ :: :: |
| : : |
0 ++-O--------------------------------------------*------------*----+
reaim.time.voluntary_context_switches
800000 ++-----------------------------------------------------------------+
| O O |
700000 O+ O O O O O O O O O O O |
| |
600000 ++ |
500000 ++ |
| |
400000 ++ .*. |
| *..*.. .*..*.. .*.. .*. *..*..* *..*.*..* .*
300000 ++ + * * *. : : : *. |
200000 *+.*.*.. .* : : : : |
| *. : : : : |
100000 ++ : : : : |
| :: : |
0 ++-O--------------------------------------------*-------------*----+
interrupts.CAL:Function_call_interrupts
5e+06 ++----------------------------------------------------------------+
4.5e+06 O+ O O O O O O O O O O O O O |
| |
4e+06 ++ |
3.5e+06 ++ |
| |
3e+06 ++ |
2.5e+06 ++ |
2e+06 ++ |
| |
1.5e+06 ++ |
1e+06 *+.*.*..*..*.*..*.*..*..*.*..*..*.*..*..*.*..* *..*.*..* *..*
| + : + : |
500000 ++ + : + : |
0 ++-O--------------------------------------------*------------*----+
vmstat.system.in
100000 ++-----------------------------------------------------------------+
90000 O+ O O O O O O O O O O O O O |
| |
80000 *+.*.*..*..*.*..*..*.*..*..*.*..*..*..*.*..*..* *..*.*..* *..*
70000 ++ : : : : |
| : : : : |
60000 ++ : : : : |
50000 ++ : : : : |
40000 ++ : : : : |
| : : : : |
30000 ++ : : : : |
20000 ++ : : : : |
| :: :: |
10000 ++ : : |
0 ++-O--------------------------------------------*-------------*----+
vmstat.system.cs
10000 ++------------------------------------------------------------------+
9000 ++ O O O O O |
O O O O O O O O O |
8000 ++ |
7000 ++ .*.*.. .*..*..*.* *. |
*.. .*..*..*.*..*. *..*..*.*. : : *..*..* *..*
6000 ++ *.*. : : : : |
5000 ++ : : : : |
4000 ++ : : : : |
| : : : : |
3000 ++ : : : : |
2000 ++ : : : : |
| : : :: |
1000 ++ : : |
0 ++-O---------------------------------------------*-------------*----+
[*] bisect-good sample
[O] bisect-bad sample
Thanks,
Xiaolong
View attachment "config-4.8.0-rc5-00036-gd59dc7b" of type "text/plain" (152629 bytes)
View attachment "job-script" of type "text/plain" (6599 bytes)
View attachment "job.yaml" of type "text/plain" (4208 bytes)
View attachment "reproduce" of type "text/plain" (7619 bytes)
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