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Date: Wed, 4 Aug 2021 22:38:00 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Dave Chinner <dchinner@...hat.com>
Cc: "Darrick J. Wong" <djwong@...nel.org>,
Christoph Hellwig <hch@....de>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
lkp@...el.com, ying.huang@...el.com, feng.tang@...el.com,
zhengjun.xing@...ux.intel.com
Subject: [xfs] 2bf1ec0ff0: stress-ng.mknod.ops_per_sec -45.4% regression
Greeting,
FYI, we noticed a -45.4% regression of stress-ng.mknod.ops_per_sec due to commit:
commit: 2bf1ec0ff067ff8f692d261b29c713f3583f7e2a ("xfs: log forces imply data device cache flushes")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: stress-ng
on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 512G memory
with following parameters:
nr_threads: 10%
disk: 1HDD
testtime: 60s
fs: xfs
class: filesystem
test: mknod
cpufreq_governor: performance
ucode: 0x5003006
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
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
bin/lkp run generated-yaml-file
=========================================================================================
class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode:
filesystem/gcc-9/performance/1HDD/xfs/x86_64-rhel-8.3/10%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp7/mknod/stress-ng/60s/0x5003006
commit:
45eddb4140 ("xfs: factor out forced iclog flushes")
2bf1ec0ff0 ("xfs: log forces imply data device cache flushes")
45eddb414047c366 2bf1ec0ff067ff8f692d261b29c
---------------- ---------------------------
%stddev %change %stddev
\ | \
87135 -45.4% 47612 stress-ng.mknod.ops
1451 -45.4% 793.24 stress-ng.mknod.ops_per_sec
23.00 ± 7% -51.4% 11.17 ± 12% stress-ng.time.percent_of_cpu_this_job_got
13.80 ± 7% -50.7% 6.80 ± 8% stress-ng.time.system_time
211458 ± 2% -62.4% 79605 ± 14% stress-ng.time.voluntary_context_switches
0.30 ± 2% -0.1 0.18 mpstat.cpu.all.sys%
13993 ± 2% -38.1% 8659 softirqs.BLOCK
27747 -2.3% 27103 proc-vmstat.nr_slab_reclaimable
76223 ± 3% -57.3% 32548 ± 5% proc-vmstat.pgpgout
1170 ± 3% -57.3% 500.17 ± 5% vmstat.io.bo
10752 -47.7% 5624 ± 6% vmstat.system.cs
32820 -34.5% 21499 slabinfo.kmalloc-rcl-64.active_objs
512.67 -34.6% 335.50 slabinfo.kmalloc-rcl-64.active_slabs
32836 -34.5% 21508 slabinfo.kmalloc-rcl-64.num_objs
512.67 -34.6% 335.50 slabinfo.kmalloc-rcl-64.num_slabs
24913 ± 2% -42.8% 14251 interrupts.315:PCI-MSI.376832-edge.ahci[0000:00:17.0]
71844 ± 6% -19.9% 57564 ± 3% interrupts.CAL:Function_call_interrupts
206.50 ± 37% -42.9% 118.00 ± 41% interrupts.CPU1.NMI:Non-maskable_interrupts
206.50 ± 37% -42.9% 118.00 ± 41% interrupts.CPU1.PMI:Performance_monitoring_interrupts
173.17 ± 26% -31.7% 118.33 ± 38% interrupts.CPU2.NMI:Non-maskable_interrupts
173.17 ± 26% -31.7% 118.33 ± 38% interrupts.CPU2.PMI:Performance_monitoring_interrupts
189.83 ± 34% -40.6% 112.83 ± 25% interrupts.CPU49.NMI:Non-maskable_interrupts
189.83 ± 34% -40.6% 112.83 ± 25% interrupts.CPU49.PMI:Performance_monitoring_interrupts
181.67 ± 25% -38.3% 112.17 ± 24% interrupts.CPU50.NMI:Non-maskable_interrupts
181.67 ± 25% -38.3% 112.17 ± 24% interrupts.CPU50.PMI:Performance_monitoring_interrupts
1895 ± 16% -32.8% 1274 ± 20% interrupts.RES:Rescheduling_interrupts
3.127e+08 ± 5% -12.2% 2.746e+08 ± 3% perf-stat.i.branch-instructions
10683 -49.8% 5364 ± 6% perf-stat.i.context-switches
3.866e+08 ± 4% -14.2% 3.318e+08 ± 3% perf-stat.i.dTLB-loads
1.949e+08 ± 3% -14.7% 1.662e+08 ± 3% perf-stat.i.dTLB-stores
1.538e+09 ± 5% -12.4% 1.348e+09 ± 3% perf-stat.i.instructions
9.31 ± 4% -13.6% 8.04 ± 3% perf-stat.i.metric.M/sec
127426 ± 14% -32.6% 85864 ± 9% perf-stat.i.node-load-misses
3.078e+08 ± 5% -12.2% 2.702e+08 ± 3% perf-stat.ps.branch-instructions
10512 -49.8% 5279 ± 6% perf-stat.ps.context-switches
3.805e+08 ± 4% -14.2% 3.265e+08 ± 3% perf-stat.ps.dTLB-loads
1.918e+08 ± 3% -14.7% 1.635e+08 ± 3% perf-stat.ps.dTLB-stores
1.514e+09 ± 5% -12.4% 1.327e+09 ± 3% perf-stat.ps.instructions
125399 ± 14% -32.6% 84480 ± 9% perf-stat.ps.node-load-misses
9.563e+10 ± 6% -12.3% 8.383e+10 ± 3% perf-stat.total.instructions
8.31 ± 20% -3.9 4.45 ± 25% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
8.30 ± 20% -3.9 4.45 ± 25% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.35 ± 19% -1.6 0.75 ± 25% perf-profile.calltrace.cycles-pp.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.35 ± 19% -1.6 0.75 ± 25% perf-profile.calltrace.cycles-pp.ksys_sync.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.08 ± 19% -1.6 0.50 ± 72% perf-profile.calltrace.cycles-pp.iterate_supers.ksys_sync.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.85 ± 25% -0.7 1.14 ± 31% perf-profile.calltrace.cycles-pp.do_mknodat.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.04 ± 27% -0.7 0.36 ±106% perf-profile.calltrace.cycles-pp.xfs_inactive_ifree.xfs_inactive.xfs_fs_destroy_inode.destroy_inode.do_unlinkat
1.08 ± 27% -0.6 0.46 ± 77% perf-profile.calltrace.cycles-pp.destroy_inode.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.05 ± 27% -0.6 0.45 ± 77% perf-profile.calltrace.cycles-pp.xfs_fs_destroy_inode.destroy_inode.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.04 ± 27% -0.6 0.44 ± 78% perf-profile.calltrace.cycles-pp.xfs_inactive.xfs_fs_destroy_inode.destroy_inode.do_unlinkat.do_syscall_64
0.89 ± 17% -0.3 0.58 ± 9% perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork
1.21 ± 8% +0.2 1.45 ± 7% perf-profile.calltrace.cycles-pp.perf_mux_hrtimer_handler.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt
8.13 ± 9% +2.0 10.16 ± 6% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
2.35 ± 19% -1.6 0.75 ± 25% perf-profile.children.cycles-pp.__x64_sys_sync
2.35 ± 19% -1.6 0.75 ± 25% perf-profile.children.cycles-pp.ksys_sync
2.09 ± 19% -1.4 0.65 ± 25% perf-profile.children.cycles-pp.iterate_supers
2.25 ± 18% -1.1 1.14 ± 26% perf-profile.children.cycles-pp._raw_spin_lock
1.40 ± 25% -1.1 0.31 ± 54% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
1.85 ± 25% -0.7 1.14 ± 31% perf-profile.children.cycles-pp.do_mknodat
1.08 ± 27% -0.5 0.55 ± 43% perf-profile.children.cycles-pp.destroy_inode
1.05 ± 27% -0.5 0.54 ± 42% perf-profile.children.cycles-pp.xfs_fs_destroy_inode
1.04 ± 27% -0.5 0.54 ± 43% perf-profile.children.cycles-pp.xfs_inactive
1.04 ± 27% -0.5 0.53 ± 44% perf-profile.children.cycles-pp.xfs_inactive_ifree
0.93 ± 21% -0.5 0.44 ± 24% perf-profile.children.cycles-pp.__schedule
0.49 ± 25% -0.4 0.11 ± 76% perf-profile.children.cycles-pp.pick_next_task_fair
1.05 ± 20% -0.4 0.69 ± 13% perf-profile.children.cycles-pp.find_busiest_group
0.66 ± 19% -0.3 0.32 ± 30% perf-profile.children.cycles-pp.schedule
1.00 ± 20% -0.3 0.65 ± 13% perf-profile.children.cycles-pp.update_sd_lb_stats
0.60 ± 20% -0.3 0.29 ± 31% perf-profile.children.cycles-pp.xfs_ifree
0.89 ± 17% -0.3 0.58 ± 9% perf-profile.children.cycles-pp.worker_thread
0.44 ± 26% -0.3 0.16 ± 45% perf-profile.children.cycles-pp.newidle_balance
0.49 ± 39% -0.3 0.22 ± 35% perf-profile.children.cycles-pp.xfs_fs_sync_fs
0.40 ± 49% -0.2 0.17 ± 29% perf-profile.children.cycles-pp.xfs_log_force
0.31 ± 29% -0.2 0.11 ± 56% perf-profile.children.cycles-pp.schedule_timeout
0.24 ± 60% -0.2 0.06 ± 50% perf-profile.children.cycles-pp.xfs_inobt_get_rec
0.38 ± 19% -0.2 0.21 ± 30% perf-profile.children.cycles-pp.xfs_btree_lookup
0.42 ± 14% -0.2 0.26 ± 35% perf-profile.children.cycles-pp.xfs_check_agi_freecount
0.30 ± 27% -0.2 0.14 ± 37% perf-profile.children.cycles-pp.xfs_btree_lookup_get_block
0.25 ± 30% -0.1 0.10 ± 39% perf-profile.children.cycles-pp.iterate_bdevs
0.33 ± 28% -0.1 0.19 ± 20% perf-profile.children.cycles-pp.try_to_wake_up
0.26 ± 31% -0.1 0.13 ± 23% perf-profile.children.cycles-pp.schedule_idle
0.16 ± 36% -0.1 0.03 ±102% perf-profile.children.cycles-pp.__down
0.16 ± 35% -0.1 0.04 ± 73% perf-profile.children.cycles-pp.xfs_buf_lock
0.16 ± 36% -0.1 0.04 ± 73% perf-profile.children.cycles-pp.down
0.21 ± 39% -0.1 0.09 ± 52% perf-profile.children.cycles-pp.xfs_iunlink_remove
0.19 ± 28% -0.1 0.08 ± 43% perf-profile.children.cycles-pp.xfs_buf_item_release
0.21 ± 33% -0.1 0.10 ± 35% perf-profile.children.cycles-pp.xfs_difree_inobt
0.14 ± 16% -0.1 0.04 ±104% perf-profile.children.cycles-pp._xfs_trans_bjoin
0.18 ± 30% -0.1 0.08 ± 80% perf-profile.children.cycles-pp.wait_for_completion
0.15 ± 27% -0.1 0.06 ± 53% perf-profile.children.cycles-pp.up
0.15 ± 33% -0.1 0.06 ± 81% perf-profile.children.cycles-pp.xfs_difree_finobt
0.15 ± 27% -0.1 0.08 ± 19% perf-profile.children.cycles-pp.xfs_trans_alloc
0.10 ± 29% -0.1 0.04 ± 72% perf-profile.children.cycles-pp.xfs_log_reserve
0.04 ± 77% +0.1 0.10 ± 34% perf-profile.children.cycles-pp.balance_fair
0.05 ± 79% +0.1 0.15 ± 31% perf-profile.children.cycles-pp.smpboot_thread_fn
0.58 ± 16% +0.1 0.72 ± 11% perf-profile.children.cycles-pp.update_rq_clock
1.24 ± 8% +0.3 1.52 ± 4% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
8.31 ± 9% +2.1 10.40 ± 5% perf-profile.children.cycles-pp.__hrtimer_run_queues
1.30 ± 18% -1.0 0.30 ± 54% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
0.75 ± 21% -0.3 0.44 ± 20% perf-profile.self.cycles-pp.__percpu_counter_sum
0.43 ± 25% -0.3 0.16 ± 45% perf-profile.self.cycles-pp.down_read
0.72 ± 13% -0.2 0.47 ± 12% perf-profile.self.cycles-pp.update_sd_lb_stats
0.35 ± 15% +0.1 0.43 ± 13% perf-profile.self.cycles-pp.irqtime_account_irq
0.08 ± 60% +0.1 0.16 ± 18% perf-profile.self.cycles-pp.timerqueue_del
stress-ng.time.system_time
20 +----------------------------------------------------------------------+
| + |
18 |-+ + :: .+ |
| : : :: +.. .+ : |
16 |-+ : : : : : +. + + : + |
|: + :: : : + : + : : : : .. + |
14 |:+ + + : .+. .+ + : + : : : +.+ +. .+.|
| +.+ : +.+.+.+ +.+ + + + +.+ |
12 |-+ : : |
| :: |
10 |-+ :: |
| + |
8 |-+ O O O O O O O |
| O O O O O O O O O O O |
6 +----------------------------------------------------------------------+
stress-ng.time.percent_of_cpu_this_job_got
35 +----------------------------------------------------------------------+
| |
| + + + |
30 |-+ :: :: +: |
| : : :: +.. + + +.+ : + |
|: : :: : : : + : : : : .. : |
25 |:+ .+ + : : +. : +. : : : :.+ : |
| +.+ : +.+.+.+.+.+.+.+ + + + + +.+.+.+.|
20 |-+ : : |
| : : |
| :: |
15 |-+ : |
| + O O O O O O O |
| O O O O O O O O O O O O O O O O O O |
10 +----------------------------------------------------------------------+
stress-ng.time.voluntary_context_switches
260000 +------------------------------------------------------------------+
240000 |-+ + |
| + : +. + .+. .+. |
220000 |++.+.+ : + +. .+. + + +.+. .+.+ +.+ + +. .+. .+.|
200000 |-+ + +.+ +. .+. .+ + + + + + + |
| + + + |
180000 |-+ |
160000 |-+ |
140000 |-+ |
| |
120000 |-+ O |
100000 |-O O O O O |
| O O O O O O O |
80000 |-+ O O O O O O OO O O O O |
60000 +------------------------------------------------------------------+
stress-ng.mknod.ops
95000 +-------------------------------------------------------------------+
90000 |-+ .+. .+. .+. .+. |
|.+.+.+ + +.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+ + +. .+.+.+.|
85000 |-+ + |
80000 |-+ |
| |
75000 |-+ |
70000 |-+ |
65000 |-+ |
| |
60000 |-+ |
55000 |-+ |
| |
50000 |-O O O O O O O O O O O O O O O O O O O O O O O O O O O |
45000 +-------------------------------------------------------------------+
stress-ng.mknod.ops_per_sec
1600 +--------------------------------------------------------------------+
| .+. .+. .+ |
1500 |.+.+.+ +.+.+.+.+.+. .+.+.+.+.+..+.+.+.+.+.+.+.+.+ + + .+.+.+.|
1400 |-+ + +.+ |
| |
1300 |-+ |
1200 |-+ |
| |
1100 |-+ |
1000 |-+ |
| |
900 |-+ |
800 |-+ O O O O O O O O O O O O O O |
| O O O O O O O O O O O O O O |
700 +--------------------------------------------------------------------+
[*] 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.
---
0DAY/LKP+ Test Infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation
Thanks,
Oliver Sang
View attachment "config-5.14.0-rc1-00013-g2bf1ec0ff067" of type "text/plain" (175415 bytes)
View attachment "job-script" of type "text/plain" (8467 bytes)
View attachment "job.yaml" of type "text/plain" (5790 bytes)
View attachment "reproduce" of type "text/plain" (552 bytes)
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