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Date: Sun, 25 Feb 2018 22:44:22 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Shakeel Butt <shakeelb@...gle.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Vlastimil Babka <vbabka@...e.cz>,
Jérôme Glisse <jglisse@...hat.com>,
Huang Ying <ying.huang@...el.com>,
Tim Chen <tim.c.chen@...ux.intel.com>,
Michal Hocko <mhocko@...nel.org>,
Greg Thelen <gthelen@...gle.com>,
Johannes Weiner <hannes@...xchg.org>,
Balbir Singh <bsingharora@...il.com>,
Minchan Kim <minchan@...nel.org>, Shaohua Li <shli@...com>,
Jan Kara <jack@...e.cz>, Nicholas Piggin <npiggin@...il.com>,
Dan Williams <dan.j.williams@...el.com>,
Mel Gorman <mgorman@...e.de>, Hugh Dickins <hughd@...gle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp-robot] [mm, mlock, vmscan] 9c4e6b1a70:
stress-ng.hdd.ops_per_sec -7.9% regression
Greeting,
FYI, we noticed a -7.9% regression of stress-ng.hdd.ops_per_sec due to commit:
commit: 9c4e6b1a7027f102990c0395296015a812525f4d ("mm, mlock, vmscan: no more skipping pagevecs")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: stress-ng
on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory
with following parameters:
nr_threads: 100%
testtime: 1s
class: io
cpufreq_governor: performance
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
=========================================================================================
class/compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime:
io/gcc-7/performance/x86_64-rhel-7.2/100%/debian-x86_64-2016-08-31.cgz/lkp-bdw-ep6/stress-ng/1s
commit:
c3cc39118c ("mm: memcontrol: fix NR_WRITEBACK leak in memcg and system stats")
9c4e6b1a70 ("mm, mlock, vmscan: no more skipping pagevecs")
c3cc39118c3610eb 9c4e6b1a7027f102990c039529
---------------- --------------------------
%stddev %change %stddev
\ | \
1242815 -14.4% 1063699 stress-ng.hdd.ops
645914 -7.9% 594931 stress-ng.hdd.ops_per_sec
473.69 -2.5% 461.99 stress-ng.time.system_time
12569476 -9.4% 11392192 vmstat.memory.cache
802679 ± 7% +40.2% 1125287 ± 12% cpuidle.C3.time
2423 ± 4% +38.7% 3360 ± 15% cpuidle.C3.usage
16584420 -9.1% 15071340 numa-numastat.node1.local_node
16594335 -9.1% 15081279 numa-numastat.node1.numa_hit
2164 ± 6% +42.7% 3087 ± 17% turbostat.C3
0.10 ± 8% +0.0 0.14 ± 15% turbostat.C3%
0.05 ± 8% +33.3% 0.07 ± 17% turbostat.CPU%c3
1.911e+09 -1.1% 1.89e+09 perf-stat.branch-misses
7.536e+09 -3.3% 7.29e+09 perf-stat.cache-references
1.633e+12 -1.6% 1.607e+12 perf-stat.cpu-cycles
0.61 +1.7% 0.62 perf-stat.ipc
2.576e+08 -2.5% 2.513e+08 perf-stat.node-loads
394861 ± 11% -53.2% 184617 ± 22% meminfo.Active
205118 ± 4% -100.0% 4.00 meminfo.Active(file)
14015193 ± 4% -99.8% 21126 ± 2% meminfo.Inactive
13995095 ± 4% -100.0% 403.25 ± 11% meminfo.Inactive(file)
1.303e+08 -10.1% 1.171e+08 meminfo.MemAvailable
3.00 +4.5e+08% 13428597 ± 4% meminfo.Unevictable
2816 ± 53% +561.9% 18643 ±134% sched_debug.cpu.avg_idle.min
3.68 ± 3% -13.5% 3.18 ± 3% sched_debug.cpu.clock.stddev
3.68 ± 3% -13.5% 3.18 ± 3% sched_debug.cpu.clock_task.stddev
0.12 ± 3% -19.3% 0.09 ± 21% sched_debug.rt_rq:/.rt_time.avg
10.04 ± 3% -21.5% 7.88 ± 22% sched_debug.rt_rq:/.rt_time.max
1.06 ± 3% -21.5% 0.84 ± 22% sched_debug.rt_rq:/.rt_time.stddev
204608 ± 11% -62.2% 77341 ± 29% numa-meminfo.node0.Active
102698 ± 4% -100.0% 0.00 numa-meminfo.node0.Active(file)
6913218 ± 5% -99.8% 13623 ± 55% numa-meminfo.node0.Inactive
6903513 ± 5% -100.0% 197.75 ± 24% numa-meminfo.node0.Inactive(file)
190923 ± 14% -43.5% 107793 ± 19% numa-meminfo.node1.Active
102681 ± 4% -100.0% 4.00 numa-meminfo.node1.Active(file)
7063606 ± 4% -99.9% 7736 ±100% numa-meminfo.node1.Inactive
7053168 ± 4% -100.0% 204.00 ± 45% numa-meminfo.node1.Inactive(file)
3.00 +2.2e+08% 6713147 ± 4% numa-meminfo.node1.Unevictable
25680 ± 4% -100.0% 0.00 numa-vmstat.node0.nr_active_file
1730227 ± 6% -100.0% 49.00 ± 24% numa-vmstat.node0.nr_inactive_file
25680 ± 4% -100.0% 0.00 numa-vmstat.node0.nr_zone_active_file
1730144 ± 6% -100.0% 49.00 ± 24% numa-vmstat.node0.nr_zone_inactive_file
7950112 ± 5% -13.4% 6886737 ± 6% numa-vmstat.node0.numa_hit
7943736 ± 5% -13.4% 6880367 ± 6% numa-vmstat.node0.numa_local
25670 ± 4% -100.0% 1.00 numa-vmstat.node1.nr_active_file
1765886 ± 5% -100.0% 50.50 ± 45% numa-vmstat.node1.nr_inactive_file
0.00 +Inf% 1670961 ± 4% numa-vmstat.node1.nr_unevictable
25670 ± 4% -100.0% 1.00 numa-vmstat.node1.nr_zone_active_file
1765833 ± 5% -100.0% 50.50 ± 45% numa-vmstat.node1.nr_zone_inactive_file
0.00 +Inf% 1670970 ± 4% numa-vmstat.node1.nr_zone_unevictable
8050425 ± 5% -13.9% 6933412 ± 5% numa-vmstat.node1.numa_hit
7878053 ± 6% -14.2% 6761044 ± 6% numa-vmstat.node1.numa_local
51353 ± 4% -100.0% 1.00 proc-vmstat.nr_active_file
3257694 -10.2% 2924036 proc-vmstat.nr_dirty_background_threshold
6523354 -10.2% 5855222 proc-vmstat.nr_dirty_threshold
3493404 ± 5% -100.0% 100.25 ± 11% proc-vmstat.nr_inactive_file
0.00 +Inf% 3344234 ± 4% proc-vmstat.nr_unevictable
51353 ± 4% -100.0% 1.00 proc-vmstat.nr_zone_active_file
3493404 ± 5% -100.0% 100.25 ± 11% proc-vmstat.nr_zone_inactive_file
0.00 +Inf% 3344234 ± 4% proc-vmstat.nr_zone_unevictable
1014 ± 32% -40.5% 603.75 ± 26% proc-vmstat.numa_hint_faults
33019247 -9.7% 29815458 proc-vmstat.numa_hit
33002235 -9.7% 29798428 proc-vmstat.numa_local
1298 ± 57% -60.9% 507.75 ± 31% proc-vmstat.numa_pages_migrated
213856 ± 38% -31.2% 147128 ± 12% proc-vmstat.numa_pte_updates
361381 -99.8% 659.50 ± 3% proc-vmstat.pgactivate
33235386 -9.4% 30127871 proc-vmstat.pgfree
1298 ± 57% -60.9% 507.75 ± 31% proc-vmstat.pgmigrate_success
1.00 +3e+09% 30018233 proc-vmstat.unevictable_pgs_culled
28.62 ± 41% -27.8 0.77 ±100% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write
28.62 ± 41% -27.8 0.77 ±100% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
28.62 ± 41% -27.8 0.77 ±100% perf-profile.calltrace.cycles-pp.sys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
28.85 ± 42% -27.4 1.49 ±117% perf-profile.calltrace.cycles-pp.write
28.12 ± 44% -27.3 0.77 ±100% perf-profile.calltrace.cycles-pp.vfs_write.sys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
28.12 ± 44% -27.3 0.77 ±100% perf-profile.calltrace.cycles-pp.__vfs_write.vfs_write.sys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
26.31 ± 53% -26.3 0.00 perf-profile.calltrace.cycles-pp.devkmsg_write.__vfs_write.vfs_write.sys_write.do_syscall_64
26.31 ± 53% -26.3 0.00 perf-profile.calltrace.cycles-pp.printk_emit.devkmsg_write.__vfs_write.vfs_write.sys_write
26.31 ± 53% -26.3 0.00 perf-profile.calltrace.cycles-pp.vprintk_emit.printk_emit.devkmsg_write.__vfs_write.vfs_write
26.31 ± 53% -26.3 0.00 perf-profile.calltrace.cycles-pp.console_unlock.vprintk_emit.printk_emit.devkmsg_write.__vfs_write
22.00 ± 68% -22.0 0.00 perf-profile.calltrace.cycles-pp.serial8250_console_write.console_unlock.vprintk_emit.printk_emit.devkmsg_write
21.07 ± 71% -21.1 0.00 perf-profile.calltrace.cycles-pp.uart_console_write.serial8250_console_write.console_unlock.vprintk_emit.printk_emit
21.07 ± 71% -21.1 0.00 perf-profile.calltrace.cycles-pp.serial8250_console_putchar.uart_console_write.serial8250_console_write.console_unlock.vprintk_emit
21.07 ± 71% -21.1 0.00 perf-profile.calltrace.cycles-pp.wait_for_xmitr.serial8250_console_putchar.uart_console_write.serial8250_console_write.console_unlock
14.27 ± 72% -14.3 0.00 perf-profile.calltrace.cycles-pp.io_serial_in.wait_for_xmitr.serial8250_console_putchar.uart_console_write.serial8250_console_write
6.80 ± 73% -6.8 0.00 perf-profile.calltrace.cycles-pp.delay_tsc.wait_for_xmitr.serial8250_console_putchar.uart_console_write.serial8250_console_write
0.81 ±173% +5.1 5.89 ± 40% perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_open.do_syscall_64
33.02 ± 12% +16.8 49.84 ± 5% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
34.45 ± 12% +17.0 51.41 ± 5% perf-profile.calltrace.cycles-pp.secondary_startup_64
33.25 ± 12% +17.7 51.00 ± 6% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
33.25 ± 12% +17.7 51.00 ± 6% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
33.25 ± 12% +17.7 51.00 ± 6% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
28.62 ± 41% -27.8 0.77 ±100% perf-profile.children.cycles-pp.sys_write
28.85 ± 42% -27.4 1.49 ±117% perf-profile.children.cycles-pp.write
28.12 ± 44% -27.3 0.77 ±100% perf-profile.children.cycles-pp.vfs_write
28.12 ± 44% -27.3 0.77 ±100% perf-profile.children.cycles-pp.__vfs_write
26.31 ± 53% -26.3 0.00 perf-profile.children.cycles-pp.devkmsg_write
26.31 ± 53% -26.3 0.00 perf-profile.children.cycles-pp.printk_emit
26.31 ± 53% -26.3 0.00 perf-profile.children.cycles-pp.vprintk_emit
26.31 ± 53% -26.3 0.00 perf-profile.children.cycles-pp.console_unlock
22.24 ± 68% -22.2 0.00 perf-profile.children.cycles-pp.wait_for_xmitr
22.00 ± 68% -22.0 0.00 perf-profile.children.cycles-pp.serial8250_console_write
21.30 ± 71% -21.3 0.00 perf-profile.children.cycles-pp.serial8250_console_putchar
21.07 ± 71% -21.1 0.00 perf-profile.children.cycles-pp.uart_console_write
59.80 ± 10% -19.5 40.33 ± 5% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
59.56 ± 10% -19.2 40.33 ± 5% perf-profile.children.cycles-pp.do_syscall_64
14.51 ± 71% -14.5 0.00 perf-profile.children.cycles-pp.io_serial_in
7.49 ± 63% -7.5 0.00 perf-profile.children.cycles-pp.delay_tsc
0.81 ±173% +5.5 6.31 ± 41% perf-profile.children.cycles-pp.link_path_walk
34.21 ± 12% +16.8 51.03 ± 5% perf-profile.children.cycles-pp.cpuidle_enter_state
34.45 ± 12% +17.0 51.41 ± 5% perf-profile.children.cycles-pp.secondary_startup_64
34.45 ± 12% +17.0 51.41 ± 5% perf-profile.children.cycles-pp.cpu_startup_entry
34.45 ± 12% +17.0 51.41 ± 5% perf-profile.children.cycles-pp.do_idle
33.25 ± 12% +17.7 51.00 ± 6% perf-profile.children.cycles-pp.start_secondary
14.51 ± 71% -14.5 0.00 perf-profile.self.cycles-pp.io_serial_in
7.49 ± 63% -7.5 0.00 perf-profile.self.cycles-pp.delay_tsc
stress-ng.hdd.ops
1.4e+06 +-+---------------------------------------------------------------+
| .+.. .+. .+.. .+.. .+.+..|
1.2e+06 +-+ +.+..+..+..+ +..+. +..+..+..+ +..+..+.+. +. |
O O O O : O : O O O O O O O O O O O O O O
1e+06 +-+ O O O O O O |
| : : |
800000 +-+ : : |
| : : |
600000 +-+ : : |
| : : |
400000 +-+ : : |
| :: |
200000 +-+ :: |
| : |
0 +-+---------------------------------------------------------------+
stress-ng.hdd.ops_per_sec
700000 +-+----------------------------------------------------------------+
|..+..+.+..+..+..+ +..+..+..+..+.+..+..+..+.+..+..+..+..+.+..+..|
600000 O-+O O O O O O O O O O O O O O O O O O O O O O O O
| : : |
500000 +-+ : : |
| : : |
400000 +-+ : : |
| : : |
300000 +-+ : : |
| : : |
200000 +-+ : : |
| :: |
100000 +-+ : |
| : |
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
View attachment "config-4.16.0-rc2-00069-g9c4e6b1" of type "text/plain" (166095 bytes)
View attachment "job-script" of type "text/plain" (6642 bytes)
View attachment "job.yaml" of type "text/plain" (4324 bytes)
View attachment "reproduce" of type "text/plain" (254 bytes)
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