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Message-ID: <20141124025141.GA7310@yliu-dev.sh.intel.com>
Date: Mon, 24 Nov 2014 10:51:41 +0800
From: Yuanhan Liu <yuanhan.liu@...ux.intel.com>
To: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org,
Yuanhan Liu <yuanhan.liu@...ux.intel.com>
Subject: [LKP] [x86, irq, ACPI] 5fcb864ef90: -3.3%(vm-scalability.throughput)
+12.9%(turbostat.%c0)
Hi,
We noticed the below changes on(NOTE: I'm not sure the bisect is correct
or not, here I report it out JFYI).
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 5fcb864ef90df093d964171539c87ffa0ab49f0f ("x86, irq, ACPI: Implement interfaces to support ACPI based IOAPIC hot-removal")
testbox/testcase/testparams: lkp-nex06/vm-scalability/performance-300s-small-allocs-mt
ff6213974cd90e1e 5fcb864ef90df093d964171539
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
:5 20% 1:5 kmsg.CE:hpet_increased_min_delta_ns_to#nsec
%stddev %change %stddev
\ | \
315326 ± 0% -3.3% 304841 ± 0% vm-scalability.throughput
11.82 ± 0% +12.9% 13.34 ± 0% turbostat.%c0
1.34 ± 0% +9.4% 1.46 ± 0% turbostat.GHz
12 ± 47% +78.7% 21 ± 32% sched_debug.cfs_rq[29]:/.load
113 ± 26% +86.3% 212 ± 28% sched_debug.cfs_rq[39]:/.tg_load_contrib
106 ± 28% +89.5% 202 ± 30% sched_debug.cfs_rq[39]:/.blocked_load_avg
66 ± 23% +120.6% 145 ± 29% sched_debug.cfs_rq[40]:/.blocked_load_avg
70 ± 23% +113.0% 150 ± 29% sched_debug.cfs_rq[40]:/.tg_load_contrib
10145 ± 23% -38.3% 6255 ± 35% numa-meminfo.node1.AnonPages
2535 ± 23% -38.3% 1564 ± 35% numa-vmstat.node1.nr_anon_pages
605 ± 16% -22.0% 471 ± 5% sched_debug.cpu#58.nr_uninterruptible
58904 ± 7% -13.8% 50762 ± 7% sched_debug.cfs_rq[0]:/.min_vruntime
481299 ± 8% -13.4% 416975 ± 7% sched_debug.cpu#0.sched_count
409009 ± 11% -15.7% 344638 ± 2% sched_debug.cpu#4.sched_count
52022 ± 10% -16.1% 43623 ± 2% sched_debug.cfs_rq[4]:/.min_vruntime
68 ± 3% -12.2% 60 ± 3% sched_debug.cfs_rq[4]:/.tg_runnable_contrib
3175 ± 3% -12.1% 2791 ± 3% sched_debug.cfs_rq[4]:/.avg->runnable_avg_sum
50060 ± 6% -12.3% 43914 ± 4% sched_debug.cfs_rq[29]:/.min_vruntime
1751 ± 12% -15.5% 1480 ± 6% sched_debug.cpu#63.nr_uninterruptible
2967 ± 6% -13.7% 2562 ± 4% sched_debug.cfs_rq[37]:/.avg->runnable_avg_sum
63 ± 6% -13.8% 55 ± 4% sched_debug.cfs_rq[37]:/.tg_runnable_contrib
1.07 ± 2% -10.9% 0.95 ± 3% perf-profile.cpu-cycles.tick_nohz_restart.tick_nohz_idle_exit.cpu_startup_entry.start_secondary
1.64 ± 2% -8.4% 1.50 ± 4% perf-profile.cpu-cycles.__tick_nohz_idle_enter.tick_nohz_idle_enter.cpu_startup_entry.start_secondary
35173 ± 5% -9.1% 31983 ± 3% sched_debug.cfs_rq[56]:/.min_vruntime
1.41 ± 2% -8.3% 1.29 ± 4% perf-profile.cpu-cycles.tick_nohz_stop_sched_tick.__tick_nohz_idle_enter.tick_nohz_idle_enter.cpu_startup_entry.start_secondary
1.63 ± 1% -9.3% 1.48 ± 3% perf-profile.cpu-cycles.tick_nohz_idle_exit.cpu_startup_entry.start_secondary
45161 ± 11% -12.8% 39358 ± 4% sched_debug.cfs_rq[25]:/.min_vruntime
39201 ± 5% +17.3% 45969 ± 18% sched_debug.cfs_rq[8]:/.min_vruntime
21071502 ± 0% -3.3% 20379730 ± 0% time.minor_page_faults
299 ± 0% -3.1% 290 ± 0% time.user_time
21763267 ± 0% -3.3% 21055329 ± 0% time.voluntary_context_switches
142199 ± 0% -3.1% 137732 ± 0% vmstat.system.cs
737 ± 0% -2.1% 721 ± 1% time.system_time
341 ± 0% -2.5% 333 ± 0% time.percent_of_cpu_this_job_got
lkp-nex06: Nehalem-EX
Memory: 64G
turbostat.%c0
14 ++-------------------------------------------------------------------+
| O |
| O O O O O |
13.5 O+ O O O O O O O |
| O O O O O |
| O O O
13 ++ |
| |
12.5 ++ |
| |
| |
12 *+.*...*.. .*... |
| *..*. *.. .*...*..*..*..*... .*..* |
| *. *. |
11.5 ++-------------------------------------------------------------------+
turbostat.GHz
1.48 ++-------------------------------------------------------------------+
O O O O O O O O O O O O |
1.46 ++ O O O O O O O O O O
1.44 ++ |
| |
1.42 ++ |
| |
1.4 ++ |
| |
1.38 ++ |
1.36 ++ |
| |
1.34 ++ .*...*.. .*..*... .*.. |
*..*...*..*..*. *..*...*..*. *. * |
1.32 ++-------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
To reproduce:
apt-get install ruby ruby-oj
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/setup-local job.yaml # the job file attached in this email
bin/run-local job.yaml
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.
--yliu
View attachment "job.yaml" of type "text/plain" (1611 bytes)
View attachment "reproduce" of type "text/plain" (5113 bytes)
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