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Date: Sat, 29 Apr 2023 22:29:00 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Boris Burkov <boris@....io>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
<linux-kernel@...r.kernel.org>, David Sterba <dsterba@...e.com>,
<linux-btrfs@...r.kernel.org>, <ying.huang@...el.com>,
<feng.tang@...el.com>, <fengwei.yin@...el.com>,
<oliver.sang@...el.com>
Subject: [linus:master] [btrfs] 52bb7a2166: filebench.sum_operations/s
-4.0% regression
Hello,
kernel test robot noticed a -4.0% regression of filebench.sum_operations/s on:
commit: 52bb7a2166af490317ce2cca1865b6630e86aca8 ("btrfs: introduce size class to block group allocator")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: filebench
test machine: 88 threads 2 sockets Intel(R) Xeon(R) Gold 6238M CPU @ 2.10GHz (Cascade Lake) with 128G memory
parameters:
disk: 1HDD
fs: btrfs
test: filemicro_rwritedsync.f
cpufreq_governor: performance
In addition to that, the commit also has significant impact on the following tests:
+------------------+----------------------------------------------------------------------------------------------------------+
| testcase: change | phoronix-test-suite: phoronix-test-suite.pgbench.BufferTest.SingleThread.ReadWrite.tps 32.8% improvement |
| test machine | 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory |
| test parameters | cpufreq_governor=performance |
| | option_a=Buffer Test |
| | option_b=Single Thread |
| | option_c=Read Write |
| | test=pgbench-1.9.1 |
+------------------+----------------------------------------------------------------------------------------------------------+
If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Link: https://lore.kernel.org/oe-lkp/202304292249.93ef60fb-oliver.sang@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
sudo bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
sudo bin/lkp run generated-yaml-file
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
=========================================================================================
compiler/cpufreq_governor/disk/fs/kconfig/rootfs/tbox_group/test/testcase:
gcc-11/performance/1HDD/btrfs/x86_64-rhel-8.3/debian-11.1-x86_64-20220510.cgz/lkp-csl-2sp9/filemicro_rwritedsync.f/filebench
commit:
854c2f365d ("btrfs: add more find_free_extent tracepoints")
52bb7a2166 ("btrfs: introduce size class to block group allocator")
854c2f365d7e0b5b 52bb7a2166af490317ce2cca186
---------------- ---------------------------
%stddev %change %stddev
\ | \
2124 -4.0% 2040 filebench.sum_operations
35.40 -4.0% 34.00 filebench.sum_operations/s
28.24 +4.1% 29.40 filebench.sum_time_ms/op
35.33 -3.8% 34.00 filebench.sum_writes/s
9459 -2.1% 9260 proc-vmstat.nr_active_file
9459 -2.1% 9260 proc-vmstat.nr_zone_active_file
11420 +6.5% 12164 proc-vmstat.pgactivate
534598 ± 33% +52.7% 816136 ± 13% numa-vmstat.node0.nr_file_pages
440964 ± 41% -64.1% 158411 ± 70% numa-vmstat.node1.nr_file_pages
257210 ±118% -92.8% 18575 ±139% numa-vmstat.node1.nr_unevictable
257210 ±118% -92.8% 18575 ±139% numa-vmstat.node1.nr_zone_unevictable
2135884 ± 33% +52.8% 3264540 ± 13% numa-meminfo.node0.FilePages
3103648 ± 26% +37.0% 4252443 ± 10% numa-meminfo.node0.MemUsed
1761338 ± 41% -64.0% 633638 ± 70% numa-meminfo.node1.FilePages
2522612 ± 32% -45.6% 1372106 ± 33% numa-meminfo.node1.MemUsed
1028842 ±118% -92.8% 74305 ±139% numa-meminfo.node1.Unevictable
9.01 ± 80% -7.9 1.11 ±223% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
7.62 ± 72% -7.1 0.56 ±223% perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
7.62 ± 72% -7.1 0.56 ±223% perf-profile.calltrace.cycles-pp.asm_exc_page_fault
7.62 ± 72% -7.1 0.56 ±223% perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault
7.24 ±104% -6.7 0.56 ±223% perf-profile.calltrace.cycles-pp.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
5.38 ± 79% -4.8 0.56 ±223% perf-profile.calltrace.cycles-pp.do_read_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
4.55 ±103% -4.0 0.56 ±223% perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
3.76 ±105% -2.5 1.28 ±223% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.getdents64
3.76 ±105% -2.5 1.28 ±223% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.getdents64
3.76 ±105% -2.5 1.28 ±223% perf-profile.calltrace.cycles-pp.__x64_sys_getdents64.do_syscall_64.entry_SYSCALL_64_after_hwframe.getdents64
3.76 ±105% -2.5 1.28 ±223% perf-profile.calltrace.cycles-pp.iterate_dir.__x64_sys_getdents64.do_syscall_64.entry_SYSCALL_64_after_hwframe.getdents64
3.76 ±105% -2.5 1.28 ±223% perf-profile.calltrace.cycles-pp.getdents64
12.08 ± 61% -9.7 2.39 ±141% perf-profile.children.cycles-pp.do_user_addr_fault
12.08 ± 61% -9.7 2.39 ±141% perf-profile.children.cycles-pp.exc_page_fault
9.01 ± 80% -7.9 1.11 ±223% perf-profile.children.cycles-pp.__handle_mm_fault
7.24 ±104% -6.7 0.56 ±223% perf-profile.children.cycles-pp.do_fault
9.01 ± 80% -6.6 2.39 ±141% perf-profile.children.cycles-pp.handle_mm_fault
5.38 ± 79% -4.8 0.56 ±223% perf-profile.children.cycles-pp.do_read_fault
5.90 ± 74% -3.7 2.22 ±141% perf-profile.children.cycles-pp.__schedule
3.76 ±105% -2.5 1.28 ±223% perf-profile.children.cycles-pp.__x64_sys_getdents64
3.76 ±105% -2.5 1.28 ±223% perf-profile.children.cycles-pp.iterate_dir
3.76 ±105% -2.5 1.28 ±223% perf-profile.children.cycles-pp.getdents64
***************************************************************************************************
lkp-csl-2sp7: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/option_a/option_b/option_c/rootfs/tbox_group/test/testcase:
gcc-11/performance/x86_64-rhel-8.3/Buffer Test/Single Thread/Read Write/debian-x86_64-phoronix/lkp-csl-2sp7/pgbench-1.9.1/phoronix-test-suite
commit:
854c2f365d ("btrfs: add more find_free_extent tracepoints")
52bb7a2166 ("btrfs: introduce size class to block group allocator")
854c2f365d7e0b5b 52bb7a2166af490317ce2cca186
---------------- ---------------------------
%stddev %change %stddev
\ | \
26.51 +32.8% 35.21 ± 9% phoronix-test-suite.pgbench.BufferTest.SingleThread.ReadWrite.tps
117794 +3.2% 121555 phoronix-test-suite.time.voluntary_context_switches
0.54 ± 11% -0.1 0.44 ± 10% perf-profile.children.cycles-pp.get_next_timer_interrupt
0.10 ± 10% -0.0 0.06 ± 47% perf-profile.children.cycles-pp.fault_in_iov_iter_readable
0.09 ± 10% -0.0 0.06 ± 47% perf-profile.children.cycles-pp.fault_in_readable
0.05 ± 55% +0.0 0.09 ± 11% perf-profile.children.cycles-pp.update_rt_rq_load_avg
0.03 ±122% +0.0 0.08 ± 28% perf-profile.children.cycles-pp.lock_and_cleanup_extent_if_need
0.18 ± 50% +0.1 0.31 ± 27% perf-profile.children.cycles-pp.ttwu_do_wakeup
3.29 ± 4% -0.3 3.02 ± 4% perf-profile.self.cycles-pp.cpuidle_enter_state
0.25 ± 8% -0.1 0.18 ± 20% perf-profile.self.cycles-pp.do_idle
0.08 ± 11% -0.0 0.04 ± 71% perf-profile.self.cycles-pp.fault_in_readable
0.11 ± 14% +0.0 0.14 ± 14% perf-profile.self.cycles-pp.load_balance
0.05 ± 55% +0.0 0.09 ± 11% perf-profile.self.cycles-pp.update_rt_rq_load_avg
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.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
View attachment "config-6.2.0-rc8-00021-g52bb7a2166af" of type "text/plain" (156271 bytes)
View attachment "job-script" of type "text/plain" (8239 bytes)
View attachment "job.yaml" of type "text/plain" (5964 bytes)
View attachment "reproduce" of type "text/plain" (505 bytes)
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