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Date: Mon, 23 Jan 2017 09:26:44 +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] 5e56dfbd83: fsmark.files_per_sec -11.1%
regression
Greeting,
FYI, we noticed a -11.1% regression of fsmark.files_per_sec due to commit:
commit: 5e56dfbd837421b7fa3c6c06018c6701e2704917 ("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
69ec9c5d23a4b83a 5e56dfbd837421b7fa3c6c0601
---------------- --------------------------
%stddev change %stddev
\ | \
57.60 -11% 51.20 fsmark.files_per_sec
606 9% 659 fsmark.time.elapsed_time
606 9% 659 fsmark.time.elapsed_time.max
139 4% 145 fsmark.time.system_time
610856 626380 fsmark.time.voluntary_context_switches
311298 15% 358279 ± 8% interrupts.CAL:Function_call_interrupts
208429 -8% 191541 vmstat.io.bo
93 -5% 89 turbostat.Avg_MHz
3.17 -6% 3.00 turbostat.%Busy
576085 ± 62% -5e+05 49030 ±173% latency_stats.avg.wait_current_trans.[btrfs].start_transaction.[btrfs].btrfs_join_transaction.[btrfs].btrfs_alloc_data_chunk_ondemand.[btrfs].btrfs_check_data_free_space.[btrfs].__btrfs_buffered_write.[btrfs].btrfs_file_write_iter.[btrfs].__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath
597933 ± 61% -5e+05 54999 ±173% latency_stats.max.wait_current_trans.[btrfs].start_transaction.[btrfs].btrfs_join_transaction.[btrfs].btrfs_alloc_data_chunk_ondemand.[btrfs].btrfs_check_data_free_space.[btrfs].__btrfs_buffered_write.[btrfs].btrfs_file_write_iter.[btrfs].__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath
16948 ±149% -7e+03 9562 ± 56% latency_stats.sum.btrfs_insert_delayed_dir_index.[btrfs].btrfs_insert_dir_item.[btrfs].btrfs_add_link.[btrfs].btrfs_create.[btrfs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath
915770 ±170% -9e+05 12746 ± 8% latency_stats.sum.btrfs_tree_read_lock.[btrfs].btrfs_read_lock_root_node.[btrfs].btrfs_search_slot.[btrfs].btrfs_lookup_dir_item.[btrfs].btrfs_lookup_dentry.[btrfs].btrfs_lookup.[btrfs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath
34543093 ± 63% -3e+07 1519937 ±173% latency_stats.sum.wait_current_trans.[btrfs].start_transaction.[btrfs].btrfs_join_transaction.[btrfs].btrfs_alloc_data_chunk_ondemand.[btrfs].btrfs_check_data_free_space.[btrfs].__btrfs_buffered_write.[btrfs].btrfs_file_write_iter.[btrfs].__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath
1.812e+08 ± 5% 16% 2.107e+08 ± 5% perf-stat.iTLB-loads
1152482 9% 1252381 perf-stat.minor-faults
1152506 9% 1252385 perf-stat.page-faults
4041609 9% 4389968 perf-stat.context-switches
2.927e+11 ± 5% 9% 3.177e+11 perf-stat.dTLB-loads
2.207e+08 7% 2.361e+08 perf-stat.iTLB-load-misses
47548 -4% 45696 perf-stat.cpu-migrations
5106 -6% 4812 ± 6% perf-stat.instructions-per-iTLB-miss
49.90 -12% 44.12 perf-stat.cache-miss-rate%
9.607e+09 ± 3% -13% 8.317e+09 ± 4% perf-stat.cache-misses
4.745e+09 ± 3% -20% 3.792e+09 ± 5% perf-stat.node-stores
208303 -8% 191422 iostat.md0.wkB/s
11.74 ± 3% 47% 17.26 ± 4% iostat.sda.rrqm/s
104126 -8% 95733 iostat.sda.wkB/s
25814 -8% 23674 iostat.sda.wrqm/s
931 -14% 801 iostat.sda.avgrq-sz
118.10 -34% 78.02 ± 10% iostat.sda.r_await
26.34 -48% 13.59 ± 12% iostat.sda.avgqu-sz
118.11 -50% 59.59 ± 12% iostat.sda.await
117.87 -50% 59.32 ± 12% iostat.sda.w_await
15.27 ± 4% 35% 20.61 ± 6% iostat.sdb.rrqm/s
104103 -8% 95711 iostat.sdb.wkB/s
25808 -8% 23668 iostat.sdb.wrqm/s
930 -14% 800 iostat.sdb.avgrq-sz
122.79 -33% 82.36 ± 7% iostat.sdb.r_await
27.23 -48% 14.15 ± 12% iostat.sdb.avgqu-sz
121.89 -49% 62.10 ± 13% iostat.sdb.await
121.67 -49% 61.83 ± 13% iostat.sdb.w_await
12.00 ± 5% 39% 16.63 ± 7% iostat.sdc.rrqm/s
229 17% 267 iostat.sdc.w/s
104125 -8% 95734 iostat.sdc.wkB/s
25812 -8% 23665 iostat.sdc.wrqm/s
904 -19% 733 iostat.sdc.avgrq-sz
115.80 -36% 74.64 ± 8% iostat.sdc.r_await
26.99 -47% 14.41 ± 10% iostat.sdc.avgqu-sz
118.17 -49% 59.81 ± 11% iostat.sdc.await
117.98 -49% 59.60 ± 12% iostat.sdc.w_await
perf-stat.page-faults
1.3e+06 ++---------------------------------------------------------------+
| O |
1.28e+06 O+O O O O O |
1.26e+06 ++ O OO O O O |
| O O |
1.24e+06 ++ O |
| O |
1.22e+06 ++ |
| |
1.2e+06 ++ |
1.18e+06 ++ |
| |
1.16e+06 *+ .* .*. *. .* *.* *. * |
| **.* *.** * *.**. *.* *.*.* *.*.* *.**.**. + *.*.**.**.*
1.14e+06 ++---------------------*----------------------------*------------+
perf-stat.minor-faults
1.3e+06 ++---------------------------------------------------------------+
| O |
1.28e+06 O+O O O O O |
1.26e+06 ++ O OO O O O |
| O O |
1.24e+06 ++ O |
| O |
1.22e+06 ++ |
| |
1.2e+06 ++ |
1.18e+06 ++ |
| |
1.16e+06 *+ .* .*. *. .* *.* *. * |
| **.* *.** * *.**. *.* *.*.* *.*.* *.**.**. + *.*.**.**.*
1.14e+06 ++---------------------*----------------------------*------------+
perf-stat.cache-miss-rate_
54 ++---------------------------------------------------------------------+
| |
52 ++ * * |
50 ++*. .* .*.*. *.* ** *. *. + + :: *. *.*. .*
|+ **.*.* *.* * + + + + *.**. + **.* * : + *.* *.**.* |
48 *+ * * * * |
| |
46 ++ |
| O O O |
44 ++ O O O O O O O O |
42 ++ O O O |
| O |
40 ++ O |
O |
38 ++---------------------------------------------------------------------+
fsmark.time.elapsed_time
680 ++--------------------------------------------------------------------+
O O O O O |
670 ++O O O O O O O O |
660 ++ O O |
| O |
650 ++ |
| O |
640 ++ |
| |
630 ++ |
620 ++ |
| |
610 *+ .*. .**. .*. .* |
| *.**.*.*.** * *.*.**.* **.*.* *.*.*.**.*.*.**.*.*.**.*.*.**.*
600 ++--------------------------------------------------------------------+
fsmark.time.elapsed_time.max
680 ++--------------------------------------------------------------------+
O O O O O |
670 ++O O O O O O O O |
660 ++ O O |
| O |
650 ++ |
| O |
640 ++ |
| |
630 ++ |
620 ++ |
| |
610 *+ .*. .**. .*. .* |
| *.**.*.*.** * *.*.**.* **.*.* *.*.*.**.*.*.**.*.*.**.*.*.**.*
600 ++--------------------------------------------------------------------+
fsmark.files_per_sec
58 ++---------------------------------------------------------------------+
|.*.**.*.*.**.*.*.*.**.*.*.**. .*.*.**. .*.**.*.*.**.*.*.*.**.*.*.**.*.*
57 *+ * * |
| |
56 ++ |
| |
55 ++ |
| |
54 ++ |
| |
53 ++ |
| |
52 ++ |
| |
51 O+O-OO-O-O-OO-O-O-O-OO-O-O-OO------------------------------------------+
vmstat.io.bo
210000 ++*--------------------*------*--------*---------------------------+
|+ *.*.**.*.* .*.**.*.* *.* + *.**. + *.*.**.*.**.*.**.*.**.*.**.*
* * * * |
205000 ++ |
| |
| |
200000 ++ |
| |
195000 ++ O |
| |
| O |
190000 ++ O O O |
O O O O O O O O |
| O O O O |
185000 ++-----------------------------------------------------------------+
iostat.sdb.wrqm_s
26000 ++*---------------------*------*-------*--------*-------------------+
|+ *.*.*.**.*. *.*.**.* **. + *.*.* + *.**.* *.*.**.*.*.**.*.**.*
25500 *+ * * * |
| |
| |
25000 ++ |
| |
24500 ++ |
| |
24000 ++ O |
| O |
| |
23500 ++ O O O O |
O OO O O O OO O O O |
23000 ++------------------------------------------------------------------+
iostat.sdb.wkB_s
106000 ++-----------------------------------------------------------------+
| *. |
104000 ++**.*.**.*.* .*.**.*.* *.* .*.*.**. .**.*.**.*.**.*.**.*.**.*.**.*
* * * * |
102000 ++ |
| |
100000 ++ |
| |
98000 ++ O |
| |
96000 ++ O |
| O O O |
94000 O+OO O O O OO O O O O |
| |
92000 ++-----------------------------------------------------------------+
iostat.sdb.avgrq-sz
940 ++--------------------------------------------------------------------+
*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*
920 ++ |
900 ++ |
| |
880 ++ |
860 ++ |
| |
840 ++ |
820 ++ O |
| O |
800 ++ O |
780 ++ O O O O O |
O O O OO O O O O |
760 ++--------------------------------------------------------------------+
iostat.sdb.avgqu-sz
28 ++*--------*--------*--*--------*--------*------------------*----------+
* **.*.* *.*.*.* * *.**.* *.**.* **.*.*.**.*.*.*.* *.*.**.*.*
26 ++ |
24 ++ |
| |
22 ++ |
20 ++ |
| |
18 ++ |
16 ++ O |
| O |
14 ++ O |
12 ++O OO O O O O O OO |
O O O O |
10 ++---------------------------------------------------------------------+
iostat.sdb.await
130 ++--------------------------------------------------------------------+
*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*
120 ++ |
110 ++ |
| |
100 ++ |
90 ++ |
| |
80 ++ |
70 ++ O |
| O |
60 ++ O O |
50 O+O OO O OO O O O O O O |
| |
40 ++--------------------------------------------------------------------+
iostat.sdb.w_await
130 ++--------------------------------------------------------------------+
*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*
120 ++ |
110 ++ |
| |
100 ++ |
90 ++ |
| |
80 ++ |
70 ++ O |
| O |
60 ++ O O |
50 ++O OO O OO O O O O O O |
O |
40 ++--------------------------------------------------------------------+
iostat.sda.wrqm_s
26000 ++*---------------------*------*-------*--------*-------------------+
|+ *.*.*.**.*. *.*.**.* **. + *.*.* + *.**.* *.*.**.*.*.**.*.**.*
25500 *+ * * * |
| |
| |
25000 ++ |
| |
24500 ++ |
| |
24000 ++ O |
| O |
| |
23500 ++ O O O O |
O OO O O O OO O O O |
23000 ++------------------------------------------------------------------+
iostat.sda.wkB_s
106000 ++-----------------------------------------------------------------+
| * *. *. * |
104000 ++ *.*.**.*.* .*.**.*.* *.* + *.**. + *.*.**.*.**.*.**.*.**.*.**.*
* * * * |
102000 ++ |
| |
100000 ++ |
| |
98000 ++ O |
| |
96000 ++ O |
| O O O |
94000 O+OO O O O OO O O O O |
| |
92000 ++-----------------------------------------------------------------+
iostat.sda.avgrq-sz
940 ++--------------------------------------------------------------------+
*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*
920 ++ |
900 ++ |
| |
880 ++ |
860 ++ |
| |
840 ++ |
820 ++ O |
| O |
800 ++ O |
780 ++ OO O O O O |
O O OO O O O O |
760 ++--------------------------------------------------------------------+
iostat.sda.avgqu-sz
28 ++---------------------------------------------------------------------+
|.*. *.*.*.* .*. .**.*.*.**. .*. .**. .*. *.*.*.**.*.*.*.**.*.*.**.*.*
26 *+ * *.* * * * * * |
24 ++ |
| |
22 ++ |
20 ++ |
| |
18 ++ |
16 ++ O |
| |
14 ++ O |
12 ++ O O O O O |
O O O OO O O O O O |
10 ++---------------------------------------------------------------------+
iostat.sda.await
130 ++--------------------------------------------------------------------+
| .* |
120 *+*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.* *.*.*.**.*
110 ++ |
| |
100 ++ |
90 ++ |
| |
80 ++ |
70 ++ O |
| |
60 ++ O O |
50 ++O OO O O OO O O O O |
O O O |
40 ++--------------------------------------------------------------------+
iostat.sda.w_await
130 ++--------------------------------------------------------------------+
| .* |
120 *+*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.* *.*.*.**.*
110 ++ |
| |
100 ++ |
90 ++ |
| |
80 ++ |
70 ++ O |
| |
60 ++ O O |
50 ++O OO O O OO O O O O |
O O O |
40 ++--------------------------------------------------------------------+
iostat.sdc.wrqm_s
26000 ++*---------------------*------*-------*--------*-------------------+
|+ *.*.*.**.*. *.*.**.* **. + *.*.* + *.**.* *.*.**.*.*.**.*.**.*
25500 *+ * * * |
| |
| |
25000 ++ |
| |
24500 ++ |
| |
24000 ++ O |
| O |
| |
23500 ++ O O O O |
O OO O O O OO O O O |
23000 ++------------------------------------------------------------------+
iostat.sdc.w_s
280 O+--------------------------------------------------------------------+
| O O O O O O O |
270 ++ OO O O O O |
| |
| O O O |
260 ++ |
| |
250 ++ |
| |
240 ++ |
| |
| |
230 *+*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*
| |
220 ++--------------------------------------------------------------------+
iostat.sdc.wkB_s
106000 ++-----------------------------------------------------------------+
| *. |
104000 ++**.*.**.*.* .*.**.*.* *.* .*.*.**. .**.*.**.*.**.*.**.*.**.*.**.*
* * * * |
102000 ++ |
| |
100000 ++ |
| |
98000 ++ O |
| |
96000 ++ O |
| O O O |
94000 O+OO O O O OO O O O O |
| |
92000 ++-----------------------------------------------------------------+
iostat.sdc.avgrq-sz
950 ++--------------------------------------------------------------------+
| |
900 *+*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*
| |
| |
850 ++ |
| |
800 ++ |
| |
750 ++ O |
| O O |
| OO O O O O O O O |
700 O+O O O O |
| |
650 ++--------------------------------------------------------------------+
iostat.sdc.avgqu-sz
28 ++----------------------------------------------------------*----------+
*.*.**.*.*.**.*.*.*.**.*.*.**.*.*.*.**.*.*.**.*.*.**.*.*.*.* *.*.**.*.*
26 ++ |
24 ++ |
| |
22 ++ |
20 ++ |
| |
18 ++ |
16 ++ O |
| O |
14 ++ O O O |
12 ++O OO O OO O O O O O |
O |
10 ++---------------------------------------------------------------------+
iostat.sdc.await
130 ++--------------------------------------------------------------------+
| .* |
120 *+*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.* *.*.*.**.*
110 ++ |
| |
100 ++ |
90 ++ |
| |
80 ++ |
70 ++ O |
| O |
60 ++ O |
50 ++O OO O O OO O O O O |
O O O |
40 ++--------------------------------------------------------------------+
iostat.sdc.r_await
130 ++--------------------------------------------------------------------+
| * |
120 *+*.* + * * *.**. .**.*. *. .*. *.*. *
| *.*.* + .*.**.*. + *. + *.* *.* *.*.** *. : *.* +|
110 ++ * * * * * |
| |
100 ++ |
| |
90 ++ |
| O |
80 ++ |
| O |
70 ++ O O O O O O O O O |
O O O O O O |
60 ++--------------------------------------------------------------------+
iostat.sdc.w_await
130 ++--------------------------------------------------------------------+
| .* |
120 *+*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.* *.*.*.**.*
110 ++ |
| |
100 ++ |
90 ++ |
| |
80 ++ |
70 ++ O |
| O |
60 ++ O |
50 ++O OO O O OO O O O O |
O O O |
40 ++--------------------------------------------------------------------+
iostat.md0.wkB_s
210000 ++---------------------*-------------------------------------------+
|.**.*.**.*.* .*.**.*.* *.* .*.*.**. .**.*.**.*.**.*.**.*.**.*.**.*
* * * * |
205000 ++ |
| |
| |
200000 ++ |
| |
195000 ++ O |
| |
| O |
190000 ++ O O O |
O O O O O 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-rc4-00243-g5e56dfb" of type "text/plain" (155570 bytes)
View attachment "job-script" of type "text/plain" (7247 bytes)
View attachment "job.yaml" of type "text/plain" (4904 bytes)
View attachment "reproduce" of type "text/plain" (1376 bytes)
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