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Date: Mon, 28 May 2018 19:34:19 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>,
Dominik Brodowski <linux@...inikbrodowski.net>,
Thomas Gleixner <tglx@...utronix.de>,
LKML <linux-kernel@...r.kernel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: [lkp-robot] [tracing/x86] 1c758a2202: aim9.disk_rr.ops_per_sec
-12.0% regression
Greeting,
FYI, we noticed a -12.0% regression of aim9.disk_rr.ops_per_sec due to commit:
commit: 1c758a2202a6b4624d0703013a2c6cfa6e7455aa ("tracing/x86: Update syscall trace events to handle new prefixed syscall func names")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: aim9
on test machine: 144 threads Intel(R) Xeon(R) CPU E7-8890 v3 @ 2.50GHz with 512G memory
with following parameters:
testtime: 300s
test: disk_rr
cpufreq_governor: performance
test-description: Suite IX is the "AIM Independent Resource Benchmark:" the famous synthetic benchmark.
test-url: https://sourceforge.net/projects/aimbench/files/aim-suite9/
Details are as below:
-------------------------------------------------------------------------------------------------->
=========================================================================================
compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/testtime:
gcc-7/performance/x86_64-rhel-7.2/debian-x86_64-2016-08-31.cgz/lkp-hsx04/disk_rr/aim9/300s
commit:
1cdae042fc ("tracing: Add missing forward declaration")
1c758a2202 ("tracing/x86: Update syscall trace events to handle new prefixed syscall func names")
1cdae042fc63dd98 1c758a2202a6b4624d0703013a
---------------- --------------------------
%stddev %change %stddev
\ | \
633310 -12.0% 557268 aim9.disk_rr.ops_per_sec
244.24 +2.2% 249.57 aim9.time.system_time
55.76 -9.6% 50.43 aim9.time.user_time
8135 ± 39% +73.2% 14091 ± 33% numa-meminfo.node0.Shmem
1328 -11.9% 1171 pmeter.performance_per_watt
450606 ± 3% -9.5% 407878 ± 5% meminfo.Committed_AS
406.75 ±173% +300.1% 1627 meminfo.Mlocked
20124 ± 4% +8.4% 21819 ± 6% softirqs.NET_RX
8237636 ± 6% -15.4% 6965294 ± 2% softirqs.RCU
2033 ± 39% +73.0% 3518 ± 33% numa-vmstat.node0.nr_shmem
21.25 ±173% +378.8% 101.75 ± 27% numa-vmstat.node2.nr_mlock
21.25 ±173% +378.8% 101.75 ± 27% numa-vmstat.node3.nr_mlock
9.408e+08 ± 6% +53.3% 1.442e+09 ± 20% perf-stat.dTLB-load-misses
47.39 ± 17% -10.4 36.99 ± 8% perf-stat.iTLB-load-miss-rate%
1279 ± 27% +63.4% 2089 ± 21% perf-stat.instructions-per-iTLB-miss
46.73 ± 5% -5.4 41.33 ± 5% perf-stat.node-store-miss-rate%
19240 +1.2% 19474 proc-vmstat.nr_indirectly_reclaimable
18868 +4.0% 19628 proc-vmstat.nr_slab_reclaimable
48395423 -11.8% 42700849 proc-vmstat.numa_hit
48314997 -11.8% 42620296 proc-vmstat.numa_local
3153408 -12.0% 2775642 proc-vmstat.pgactivate
48365477 -11.8% 42678780 proc-vmstat.pgfree
3060 +38.9% 4250 slabinfo.ftrace_event_field.active_objs
3060 +38.9% 4250 slabinfo.ftrace_event_field.num_objs
2748 ± 3% -8.9% 2502 ± 3% slabinfo.sighand_cache.active_objs
2763 ± 3% -8.9% 2517 ± 3% slabinfo.sighand_cache.num_objs
4125 ± 4% -10.3% 3700 ± 2% slabinfo.signal_cache.active_objs
4125 ± 4% -10.3% 3700 ± 2% slabinfo.signal_cache.num_objs
1104 +57.3% 1736 slabinfo.trace_event_file.active_objs
1104 +57.3% 1736 slabinfo.trace_event_file.num_objs
0.78 ± 4% -0.1 0.67 ± 5% perf-profile.calltrace.cycles-pp.rcu_process_callbacks.__softirqentry_text_start.irq_exit.smp_apic_timer_interrupt.apic_timer_interrupt
2.10 ± 2% -0.1 2.00 perf-profile.calltrace.cycles-pp.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt
1.89 -0.1 1.79 perf-profile.calltrace.cycles-pp.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt
1.71 ± 2% -0.1 1.60 perf-profile.calltrace.cycles-pp.update_process_times.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt
0.53 ± 12% -0.1 0.44 ± 4% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.17 ± 7% -0.0 0.15 ± 4% perf-profile.children.cycles-pp.leave_mm
0.09 ± 8% -0.0 0.08 ± 11% perf-profile.children.cycles-pp.cpu_load_update_active
0.17 ± 8% +0.0 0.19 ± 4% perf-profile.children.cycles-pp.irq_work_needs_cpu
0.43 ± 14% -0.1 0.38 ± 3% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.17 ± 7% -0.0 0.15 ± 4% perf-profile.self.cycles-pp.leave_mm
0.30 +0.0 0.32 ± 2% perf-profile.self.cycles-pp.get_next_timer_interrupt
0.17 ± 8% +0.0 0.19 ± 4% perf-profile.self.cycles-pp.irq_work_needs_cpu
0.06 ± 9% +0.0 0.08 ± 15% perf-profile.self.cycles-pp.sched_clock
4358 ± 15% +25.0% 5446 ± 7% sched_debug.cfs_rq:/.exec_clock.avg
24231 ± 7% +12.3% 27202 ± 3% sched_debug.cfs_rq:/.exec_clock.stddev
23637 ± 17% +33.3% 31501 ± 14% sched_debug.cfs_rq:/.load.avg
73299 ± 9% +19.8% 87807 ± 8% sched_debug.cfs_rq:/.load.stddev
35584 ± 7% +13.2% 40294 ± 5% sched_debug.cfs_rq:/.min_vruntime.stddev
0.09 ± 10% +27.8% 0.12 ± 15% sched_debug.cfs_rq:/.nr_running.avg
17.10 ± 18% +36.5% 23.33 ± 18% sched_debug.cfs_rq:/.runnable_load_avg.avg
63.20 ± 10% +18.9% 75.11 ± 7% sched_debug.cfs_rq:/.runnable_load_avg.stddev
23618 ± 17% +33.3% 31477 ± 14% sched_debug.cfs_rq:/.runnable_weight.avg
73217 ± 9% +19.9% 87751 ± 8% sched_debug.cfs_rq:/.runnable_weight.stddev
35584 ± 7% +13.2% 40294 ± 5% sched_debug.cfs_rq:/.spread0.stddev
95.02 ± 9% +14.5% 108.82 ± 7% sched_debug.cfs_rq:/.util_avg.avg
19.44 ± 9% +23.0% 23.91 ± 10% sched_debug.cfs_rq:/.util_est_enqueued.avg
323.02 ± 3% -6.4% 302.21 ± 4% sched_debug.cpu.ttwu_local.avg
aim9.disk_rr.ops_per_sec
650000 +-+----------------------------------------------------------------+
640000 +-+ .+.. |
| .+.+..+..+..+..+ +.. .+.. .+.. .+..+..|
630000 +-++. +..+..+ +..+..+.+. +..+..+ |
620000 +-+ |
| |
610000 +-+ |
600000 +-+ |
590000 +-+ |
| |
580000 +-+ |
570000 +-+ |
O O O O O O O O O O |
560000 +-+O O O O O O O O O O O O O |
550000 +-+----------------------------------------------------------------+
aim9.time.user_time
57 +-+--------------------------------------------------------------------+
| .+..+.. .+. .+.. .|
56 +-+ .+..+.. .+..+..+. +..+. +.. .+..+. +.. .+.. .+..+. |
55 +-++. +. +. +. +. |
| |
54 +-+ |
| |
53 +-+ |
| |
52 +-+ O |
51 +-+ |
| O O O O O O O O O |
50 O-+O O O O O O O O |
| O O O O |
49 +-+--------------------------------------------------------------------+
aim9.time.system_time
251 +-+-------------------------------------------------------------------+
| O O O O |
250 O-+O O O O O O O O |
249 +-+ O O O O O O O O O |
| |
248 +-+ O |
| |
247 +-+ |
| |
246 +-+ |
245 +-+ |
| .+.. .+.. .+.. .+.. .+.. |
244 +-+ +..+. +..+.+.. .+..+..+..+. +..+..+..+ +. +..+..|
| +..+. |
243 +-+-------------------------------------------------------------------+
[*] 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-4.17.0-rc1-00002-g1c758a2" of type "text/plain" (164157 bytes)
View attachment "job-script" of type "text/plain" (7041 bytes)
View attachment "job.yaml" of type "text/plain" (4569 bytes)
View attachment "reproduce" of type "text/plain" (254 bytes)
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