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Date: Fri, 3 Feb 2017 09:46:09 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Michal Hocko <mhocko@...e.com>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>,
Minchan Kim <minchan@...nel.org>,
Hillf Danton <hillf.zj@...baba-inc.com>,
Mel Gorman <mgorman@...e.de>,
Johannes Weiner <hannes@...xchg.org>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp-robot] [mm, vmscan] fe23914ddd: fsmark.files_per_sec -11.1%
regression
Greeting,
FYI, we noticed a -11.1% regression of fsmark.files_per_sec due to commit:
commit: fe23914dddb126a29ac4929415eb318f60d97cac ("mm, vmscan: consider eligible zones in get_scan_count")
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
in testcase: fsmark
on test machine: 48 threads Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz with 64G memory
with following parameters:
iterations: 1
nr_threads: 64
disk: 3HDD
md: RAID5
fs: btrfs
filesize: 4M
test_size: 130G
sync_method: NoSync
cpufreq_governor: performance
test-description: The fsmark is a file system benchmark to test synchronous write workloads, for example, mail servers workload.
test-url: https://sourceforge.net/projects/fsmark/
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
testcase/path_params/tbox_group/run: fsmark/1-64-3HDD-RAID5-btrfs-4M-130G-NoSync-performance/ivb44
13b4e0592df44c15 fe23914dddb126a29ac4929415
---------------- --------------------------
57.60 -11% 51.20 fsmark.files_per_sec
608 10% 670 fsmark.time.elapsed_time
608 10% 670 fsmark.time.elapsed_time.max
141 5% 149 fsmark.time.system_time
613586 628565 fsmark.time.voluntary_context_switches
14682 ± 7% -25% 11031 ± 5% fsmark.time.involuntary_context_switches
301042 29% 389835 ± 5% interrupts.CAL:Function_call_interrupts
207732 -9% 188203 vmstat.io.bo
6654 6541 vmstat.system.cs
5.08 -4% 4.88 turbostat.RAMWatt
92 -5% 88 turbostat.Avg_MHz
3.23 ± 4% -8% 2.97 turbostat.%Busy
155081 ± 12% -1e+05 19550 ± 76% latency_stats.sum.btrfs_tree_lock.[btrfs].btrfs_search_slot.[btrfs].btrfs_insert_empty_items.[btrfs].btrfs_new_inode.[btrfs].btrfs_create.[btrfs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath
1454653 ± 3% -1e+06 209533 ± 47% latency_stats.sum.btrfs_tree_lock.[btrfs].btrfs_lock_root_node.[btrfs].btrfs_search_slot.[btrfs].btrfs_insert_empty_items.[btrfs].insert_with_overflow.[btrfs].btrfs_insert_dir_item.[btrfs].btrfs_add_link.[btrfs].btrfs_create.[btrfs].path_openat.do_filp_open.do_sys_open.SyS_open
3.351e+08 ± 6% -3e+08 71080683 ± 24% latency_stats.sum.wait_current_trans.[btrfs].start_transaction.[btrfs].btrfs_start_transaction.[btrfs].btrfs_create.[btrfs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath
17.26 ± 12% 31% 22.53 ± 15% perf-stat.node-store-miss-rate%
2.856e+11 ± 5% 14% 3.267e+11 ± 4% perf-stat.dTLB-loads
1.815e+09 ± 11% 14% 2.071e+09 ± 6% perf-stat.node-load-misses
1156825 10% 1268375 perf-stat.minor-faults
1156846 10% 1268396 perf-stat.page-faults
4058202 8% 4395013 perf-stat.context-switches
2.071e+08 ± 6% 8% 2.228e+08 perf-stat.iTLB-loads
32.23 ± 3% 7% 34.55 perf-stat.node-load-miss-rate%
2.322e+08 5% 2.441e+08 perf-stat.iTLB-load-misses
0.44 0.43 perf-stat.ipc
1.925e+10 ± 3% -7% 1.783e+10 ± 5% perf-stat.cache-references
1.702e+09 ± 9% -9% 1.542e+09 ± 6% perf-stat.branch-misses
49.17 -11% 43.60 ± 3% perf-stat.cache-miss-rate%
4.582e+09 -15% 3.904e+09 perf-stat.node-stores
9.459e+09 -18% 7.764e+09 ± 3% perf-stat.cache-misses
207580 -9% 188098 iostat.md0.wkB/s
12.24 ± 5% 42% 17.38 ± 10% iostat.sda.rrqm/s
103790 -9% 94071 iostat.sda.wkB/s
25722 -10% 23255 iostat.sda.wrqm/s
931 -16% 783 iostat.sda.avgrq-sz
120.88 -42% 69.92 ± 3% iostat.sda.r_await
26.14 -55% 11.88 ± 3% iostat.sda.avgqu-sz
117.72 -56% 52.03 ± 3% iostat.sda.await
117.47 -56% 51.76 ± 3% iostat.sda.w_await
15.66 ± 5% 37% 21.39 ± 8% iostat.sdb.rrqm/s
103763 -9% 94048 iostat.sdb.wkB/s
25717 -10% 23249 iostat.sdb.wrqm/s
930 -16% 783 iostat.sdb.avgrq-sz
120.42 -39% 73.21 ± 4% iostat.sdb.r_await
27.19 -54% 12.38 ± 3% iostat.sdb.avgqu-sz
122.32 -56% 54.23 ± 3% iostat.sdb.await
122.10 -56% 53.98 ± 3% iostat.sdb.w_await
11.84 ± 4% 41% 16.68 ± 7% iostat.sdc.rrqm/s
228 18% 270 iostat.sdc.w/s
103791 -9% 94074 iostat.sdc.wkB/s
25721 -10% 23246 iostat.sdc.wrqm/s
904 -21% 710 iostat.sdc.avgrq-sz
117.37 -40% 70.17 ± 3% iostat.sdc.r_await
26.85 -53% 12.71 iostat.sdc.avgqu-sz
118.03 -56% 52.24 ± 3% iostat.sdc.await
117.83 -56% 52.02 ± 3% iostat.sdc.w_await
perf-stat.page-faults
1.3e+06 ++---------------------------------------------------------------+
| |
1.28e+06 O+O O OO O O O O |
1.26e+06 ++ O O OO O O |
| O O O O |
1.24e+06 ++ |
| |
1.22e+06 ++ |
| |
1.2e+06 ++ |
1.18e+06 ++ |
| |
1.16e+06 ++ .*. *. *.*. .*.* *. .*. .*. *.|
*.**.* **. .* *.*.**.*.* *.** *.*.* * **.*.**.* * *
1.14e+06 ++----------*----------------------------------------------------+
perf-stat.minor-faults
1.3e+06 ++---------------------------------------------------------------+
| |
1.28e+06 O+O O OO O O O O |
1.26e+06 ++ O O OO O O |
| O O O O |
1.24e+06 ++ |
| |
1.22e+06 ++ |
| |
1.2e+06 ++ |
1.18e+06 ++ |
| |
1.16e+06 ++ .*. *. *.*. .*.* *. .*. .*. *.|
*.**.* **. .* *.*.**.*.* *.** *.*.* * **.*.**.* * *
1.14e+06 ++----------*----------------------------------------------------+
fsmark.time.elapsed_time
680 ++--------------------------------------------------------------------+
| O O O O O |
670 O+ O O O O O OO O O O O O |
660 ++ O |
| |
650 ++ |
| |
640 ++ |
| |
630 ++ |
620 ++ |
| |
610 ++ .*. *. .*. *.*. .* .**.*. *. .*.|
*.* * *.*.*.*.**.*.*.* * *.*.*.* *.*.*.*.* *.*.*.* * *
600 ++--------------------------------------------------------------------+
fsmark.time.elapsed_time.max
680 ++--------------------------------------------------------------------+
| O O O O O |
670 O+ O O O O O OO O O O O O |
660 ++ O |
| |
650 ++ |
| |
640 ++ |
| |
630 ++ |
620 ++ |
| |
610 ++ .*. *. .*. *.*. .* .**.*. *. .*.|
*.* * *.*.*.*.**.*.*.* * *.*.*.* *.*.*.*.* *.*.*.* * *
600 ++--------------------------------------------------------------------+
fsmark.files_per_sec
58 ++---------------------------------------------------------------------+
*.*.*.**.*.*.*.*.*.*.**.*.*.*.*. .*.**.*. .*.*.*.**.*.*.*.*.*.*.**.*.*.*
57 ++ * * |
| |
56 ++ |
| |
55 ++ |
| |
54 ++ |
| |
53 ++ |
| |
52 ++ |
| |
51 O+O-O-OO-O-O-O-O-O-O-OO-O-O-O-O-O-O------------------------------------+
vmstat.io.bo
210000 ++------------------------------*--------*-------------------------+
*.*.**. .*.**.*.*.**.*.*. *. + **.*. + *.*.*.**.*.*.**.*.*. *.*.*
| * * *.* * * |
205000 ++ |
| |
| |
200000 ++ |
| |
195000 ++ |
| |
| |
190000 ++ O O |
O OO O O O O O OO O O O O |
| O O O |
185000 ++-----------------------------------------------------------------+
[*] 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-4.10.0-rc4-00364-gfe23914" of type "text/plain" (155570 bytes)
View attachment "job-script" of type "text/plain" (7236 bytes)
View attachment "job.yaml" of type "text/plain" (4893 bytes)
View attachment "reproduce" of type "text/plain" (1376 bytes)
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