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Message-ID: <20210511070805.GE8539@xsang-OptiPlex-9020>
Date: Tue, 11 May 2021 15:08:05 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Amir Goldstein <amir73il@...il.com>
Cc: Jan Kara <jack@...e.cz>, LKML <linux-kernel@...r.kernel.org>,
lkp@...ts.01.org, lkp@...el.com, ying.huang@...el.com,
feng.tang@...el.com, zhengjun.xing@...el.com
Subject: [fanotify] 7cea2a3c50: stress-ng.fanotify.ops_per_sec -23.4%
regression
Greeting,
FYI, we noticed a -23.4% regression of stress-ng.fanotify.ops_per_sec due to commit:
commit: 7cea2a3c505e87a9d6afc78be4a7f7be636a73a7 ("fanotify: support limited functionality for unprivileged users")
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 192G memory
with following parameters:
nr_threads: 10%
disk: 1HDD
testtime: 60s
fs: ext4
class: os
test: fanotify
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:
os/gcc-9/performance/1HDD/ext4/x86_64-rhel-8.3/10%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp5/fanotify/stress-ng/60s/0x5003006
commit:
5b8fea65d1 ("fanotify: configurable limits via sysfs")
7cea2a3c50 ("fanotify: support limited functionality for unprivileged users")
5b8fea65d197f408 7cea2a3c505e87a9d6afc78be4a
---------------- ---------------------------
%stddev %change %stddev
\ | \
1.214e+08 ± 3% -23.4% 93048328 ± 4% stress-ng.fanotify.ops
2023656 ± 3% -23.4% 1550295 ± 4% stress-ng.fanotify.ops_per_sec
33565053 -10.9% 29899893 ± 3% stress-ng.time.file_system_outputs
19487 ± 3% -19.0% 15787 ± 3% stress-ng.time.involuntary_context_switches
10868 -1.0% 10755 stress-ng.time.minor_page_faults
1648 -1.9% 1618 stress-ng.time.percent_of_cpu_this_job_got
1014 -1.6% 998.53 stress-ng.time.system_time
38378 ± 97% +280.5% 146045 ± 7% stress-ng.time.voluntary_context_switches
18.19 -3.9% 17.48 ± 2% iostat.cpu.system
0.96 ± 6% -0.2 0.72 ± 8% mpstat.cpu.all.soft%
0.21 -0.0 0.18 ± 6% mpstat.cpu.all.usr%
191.47 -2.3% 187.06 turbostat.PkgWatt
91.25 -1.4% 89.97 turbostat.RAMWatt
3494 ± 39% +55.6% 5438 vmstat.memory.buff
3805 ± 30% +81.6% 6909 ± 3% vmstat.system.cs
509.50 +23.4% 628.50 ± 18% interrupts.CPU53.CAL:Function_call_interrupts
3119 ± 44% -62.8% 1159 ± 38% interrupts.CPU62.NMI:Non-maskable_interrupts
3119 ± 44% -62.8% 1159 ± 38% interrupts.CPU62.PMI:Performance_monitoring_interrupts
4580 ±106% +357.3% 20942 ± 38% numa-meminfo.node0.Dirty
4290 ±109% +363.2% 19873 ± 36% numa-meminfo.node0.Inactive(file)
5634 ± 74% +364.1% 26149 ± 25% numa-meminfo.node1.Dirty
4728 ± 75% +406.7% 23958 ± 25% numa-meminfo.node1.Inactive(file)
52712 ± 12% +28.6% 67787 ± 8% numa-meminfo.node1.KReclaimable
52712 ± 12% +28.6% 67787 ± 8% numa-meminfo.node1.SReclaimable
15433 ± 7% +15.2% 17772 ± 2% meminfo.Active
3658 ± 37% +52.2% 5568 meminfo.Active(file)
3490 ± 39% +55.6% 5431 meminfo.Buffers
10124 ± 75% +366.6% 47241 ± 15% meminfo.Dirty
314459 ± 2% +12.9% 354928 meminfo.Inactive
8907 ± 77% +393.4% 43949 ± 15% meminfo.Inactive(file)
107422 +16.4% 124988 ± 2% meminfo.KReclaimable
107422 +16.4% 124988 ± 2% meminfo.SReclaimable
1110 ±111% +368.9% 5205 ± 38% numa-vmstat.node0.nr_dirty
1046 ±114% +372.2% 4940 ± 36% numa-vmstat.node0.nr_inactive_file
1048 ±113% +371.4% 4941 ± 36% numa-vmstat.node0.nr_zone_inactive_file
1138 ±110% +360.2% 5241 ± 38% numa-vmstat.node0.nr_zone_write_pending
1385 ± 78% +368.3% 6486 ± 25% numa-vmstat.node1.nr_dirty
1155 ± 81% +413.4% 5933 ± 25% numa-vmstat.node1.nr_inactive_file
13198 ± 12% +28.1% 16909 ± 8% numa-vmstat.node1.nr_slab_reclaimable
1154 ± 81% +413.8% 5933 ± 25% numa-vmstat.node1.nr_zone_inactive_file
1409 ± 78% +362.8% 6523 ± 25% numa-vmstat.node1.nr_zone_write_pending
8001 ± 4% +18.4% 9476 ± 6% softirqs.CPU3.SCHED
7965 ± 6% +16.4% 9273 ± 7% softirqs.CPU54.SCHED
7857 ± 6% +18.4% 9306 ± 6% softirqs.CPU58.SCHED
7971 ± 5% +14.0% 9085 ± 5% softirqs.CPU62.SCHED
7773 ± 5% +16.7% 9072 ± 7% softirqs.CPU64.SCHED
9103 ± 18% -33.4% 6060 ± 26% softirqs.CPU71.RCU
7936 ± 7% +17.7% 9341 ± 7% softirqs.CPU71.SCHED
8074 ± 35% -50.5% 3997 ± 17% softirqs.CPU77.RCU
7813 ± 6% +15.7% 9036 ± 7% softirqs.CPU8.SCHED
934447 ± 2% -10.4% 836914 ± 2% softirqs.RCU
914.67 ± 37% +52.2% 1392 proc-vmstat.nr_active_file
4196621 -10.9% 3740233 ± 3% proc-vmstat.nr_dirtied
2530 ± 75% +364.4% 11749 ± 15% proc-vmstat.nr_dirty
273393 +3.5% 282850 proc-vmstat.nr_file_pages
2239 ± 76% +388.3% 10932 ± 15% proc-vmstat.nr_inactive_file
26824 +16.3% 31185 ± 3% proc-vmstat.nr_slab_reclaimable
1550 ± 27% +249.9% 5424 ± 40% proc-vmstat.nr_written
914.67 ± 37% +52.2% 1392 proc-vmstat.nr_zone_active_file
2239 ± 76% +388.3% 10932 ± 15% proc-vmstat.nr_zone_inactive_file
2547 ± 77% +363.4% 11805 ± 15% proc-vmstat.nr_zone_write_pending
8695504 -15.1% 7378817 ± 3% proc-vmstat.numa_hit
8608986 -15.3% 7292304 ± 3% proc-vmstat.numa_local
13559136 -18.5% 11047582 ± 4% proc-vmstat.pgalloc_normal
13417362 -18.7% 10904217 ± 4% proc-vmstat.pgfree
27913 ± 8% +37.7% 38440 ± 10% slabinfo.buffer_head.active_objs
726.67 ± 7% +37.7% 1000 ± 9% slabinfo.buffer_head.active_slabs
28355 ± 7% +37.7% 39043 ± 9% slabinfo.buffer_head.num_objs
726.67 ± 7% +37.7% 1000 ± 9% slabinfo.buffer_head.num_slabs
107206 +11.6% 119642 ± 2% slabinfo.dentry.active_objs
2593 +11.1% 2881 ± 2% slabinfo.dentry.active_slabs
108962 +11.1% 121015 ± 2% slabinfo.dentry.num_objs
2593 +11.1% 2881 ± 2% slabinfo.dentry.num_slabs
66688 ± 9% +31.8% 87926 ± 8% slabinfo.ext4_extent_status.active_objs
655.00 ± 9% +31.8% 863.17 ± 8% slabinfo.ext4_extent_status.active_slabs
66862 ± 9% +31.8% 88097 ± 8% slabinfo.ext4_extent_status.num_objs
655.00 ± 9% +31.8% 863.17 ± 8% slabinfo.ext4_extent_status.num_slabs
11791 ± 11% +79.3% 21139 ± 8% slabinfo.ext4_inode_cache.active_objs
440.17 ± 11% +85.2% 815.00 ± 9% slabinfo.ext4_inode_cache.active_slabs
11889 ± 11% +85.2% 22019 ± 9% slabinfo.ext4_inode_cache.num_objs
440.17 ± 11% +85.2% 815.00 ± 9% slabinfo.ext4_inode_cache.num_slabs
1428 ± 25% +41.9% 2027 ± 5% slabinfo.jbd2_journal_head.active_objs
1428 ± 25% +41.9% 2027 ± 5% slabinfo.jbd2_journal_head.num_objs
6756 ± 15% +41.1% 9536 ± 3% slabinfo.kmalloc-rcl-512.active_objs
6792 ± 15% +42.1% 9649 ± 3% slabinfo.kmalloc-rcl-512.num_objs
72015 ± 5% +15.2% 82951 ± 4% slabinfo.vmap_area.active_objs
1129 ± 5% +16.2% 1312 ± 4% slabinfo.vmap_area.active_slabs
72353 ± 5% +16.2% 84046 ± 4% slabinfo.vmap_area.num_objs
1129 ± 5% +16.2% 1312 ± 4% slabinfo.vmap_area.num_slabs
4.537e+09 -13.0% 3.948e+09 ± 4% perf-stat.i.branch-instructions
34409487 -12.1% 30235678 ± 2% perf-stat.i.branch-misses
34.06 ± 2% -2.4 31.67 ± 2% perf-stat.i.cache-miss-rate%
85290547 ± 3% -12.7% 74474324 ± 5% perf-stat.i.cache-misses
3674 ± 32% +88.6% 6931 ± 3% perf-stat.i.context-switches
2.35 +12.2% 2.64 ± 4% perf-stat.i.cpi
5.242e+10 -3.5% 5.057e+10 perf-stat.i.cpu-cycles
224.46 -9.4% 203.26 ± 2% perf-stat.i.cpu-migrations
656.95 ± 2% +12.4% 738.24 ± 5% perf-stat.i.cycles-between-cache-misses
300745 ± 11% +53.4% 461361 ± 19% perf-stat.i.dTLB-load-misses
6.438e+09 -13.9% 5.543e+09 ± 4% perf-stat.i.dTLB-loads
161739 ± 7% +14.6% 185423 ± 6% perf-stat.i.dTLB-store-misses
3.536e+09 -15.4% 2.991e+09 ± 4% perf-stat.i.dTLB-stores
88.81 -1.9 86.94 perf-stat.i.iTLB-load-miss-rate%
20384992 ± 2% -14.5% 17430423 ± 4% perf-stat.i.iTLB-load-misses
2.218e+10 -13.3% 1.923e+10 ± 4% perf-stat.i.instructions
0.43 -9.5% 0.39 ± 3% perf-stat.i.ipc
0.55 -3.5% 0.53 perf-stat.i.metric.GHz
612.45 ± 2% -11.7% 540.91 perf-stat.i.metric.K/sec
153.67 -13.9% 132.37 ± 4% perf-stat.i.metric.M/sec
88.26 -1.5 86.78 perf-stat.i.node-load-miss-rate%
31264969 ± 3% -14.5% 26719326 ± 3% perf-stat.i.node-load-misses
82.85 -2.5 80.30 perf-stat.i.node-store-miss-rate%
16368326 ± 3% -16.1% 13725763 ± 2% perf-stat.i.node-store-misses
11.08 ± 2% +7.9% 11.95 ± 5% perf-stat.overall.MPKI
34.71 ± 2% -2.3 32.43 ± 2% perf-stat.overall.cache-miss-rate%
2.36 +11.4% 2.63 ± 2% perf-stat.overall.cpi
0.00 ± 12% +0.0 0.01 ± 25% perf-stat.overall.dTLB-load-miss-rate%
0.00 ± 8% +0.0 0.01 ± 9% perf-stat.overall.dTLB-store-miss-rate%
90.08 -1.6 88.49 perf-stat.overall.iTLB-load-miss-rate%
0.42 -10.2% 0.38 ± 2% perf-stat.overall.ipc
84.44 -2.2 82.27 perf-stat.overall.node-store-miss-rate%
4.465e+09 -13.0% 3.886e+09 ± 4% perf-stat.ps.branch-instructions
33856926 -12.1% 29757385 ± 2% perf-stat.ps.branch-misses
83927962 ± 3% -12.7% 73296150 ± 5% perf-stat.ps.cache-misses
3620 ± 31% +88.4% 6819 ± 4% perf-stat.ps.context-switches
5.158e+10 -3.5% 4.977e+10 perf-stat.ps.cpu-cycles
221.03 -9.5% 200.02 ± 2% perf-stat.ps.cpu-migrations
295389 ± 11% +53.7% 454026 ± 19% perf-stat.ps.dTLB-load-misses
6.336e+09 -13.9% 5.456e+09 ± 4% perf-stat.ps.dTLB-loads
159067 ± 7% +14.7% 182479 ± 6% perf-stat.ps.dTLB-store-misses
3.48e+09 -15.4% 2.944e+09 ± 4% perf-stat.ps.dTLB-stores
20061765 ± 2% -14.5% 17156375 ± 4% perf-stat.ps.iTLB-load-misses
2.183e+10 -13.3% 1.893e+10 ± 4% perf-stat.ps.instructions
30762758 ± 3% -14.5% 26295053 ± 3% perf-stat.ps.node-load-misses
16104244 ± 3% -16.1% 13507363 ± 2% perf-stat.ps.node-store-misses
1.377e+12 ± 2% -12.2% 1.21e+12 ± 2% perf-stat.total.instructions
2.87 ± 11% -0.7 2.18 ± 11% perf-profile.calltrace.cycles-pp.ret_from_fork
2.87 ± 11% -0.7 2.18 ± 11% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork
2.85 ± 11% -0.7 2.16 ± 11% perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork
2.84 ± 11% -0.7 2.15 ± 11% perf-profile.calltrace.cycles-pp.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork
2.84 ± 11% -0.7 2.15 ± 11% perf-profile.calltrace.cycles-pp.rcu_core.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn.kthread
2.84 ± 11% -0.7 2.15 ± 11% perf-profile.calltrace.cycles-pp.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork
2.83 ± 11% -0.7 2.15 ± 11% perf-profile.calltrace.cycles-pp.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn
2.50 ± 10% -0.6 1.88 ± 11% perf-profile.calltrace.cycles-pp.kmem_cache_free.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd
2.26 ± 10% -0.6 1.69 ± 14% perf-profile.calltrace.cycles-pp.kmem_cache_free.fanotify_read.vfs_read.ksys_read.do_syscall_64
1.79 ± 12% -0.5 1.30 ± 14% perf-profile.calltrace.cycles-pp.kmem_cache_alloc.__alloc_file.alloc_empty_file.dentry_open.copy_event_to_user
1.74 ± 9% -0.5 1.26 ± 13% perf-profile.calltrace.cycles-pp.fanotify_free_event.fanotify_read.vfs_read.ksys_read.do_syscall_64
1.58 ± 12% -0.4 1.18 ± 11% perf-profile.calltrace.cycles-pp._raw_spin_lock.fanotify_read.vfs_read.ksys_read.do_syscall_64
1.43 ± 8% -0.4 1.03 ± 29% perf-profile.calltrace.cycles-pp.lockref_get.fanotify_alloc_event.fanotify_handle_event.fsnotify.__fsnotify_parent
2.19 ± 7% -0.4 1.83 ± 6% perf-profile.calltrace.cycles-pp.fanotify_alloc_event.fanotify_handle_event.fsnotify.__fsnotify_parent.__fput
0.71 ± 11% -0.3 0.37 ± 70% perf-profile.calltrace.cycles-pp.put_pid.fanotify_free_event.fanotify_read.vfs_read.ksys_read
2.14 ± 7% -0.3 1.80 ± 7% perf-profile.calltrace.cycles-pp.kmem_cache_alloc.fanotify_alloc_event.fanotify_handle_event.fsnotify.__fsnotify_parent
1.17 ± 10% -0.3 0.85 ± 12% perf-profile.calltrace.cycles-pp.ext4_file_open.do_dentry_open.dentry_open.copy_event_to_user.fanotify_read
2.37 ± 8% -0.3 2.07 ± 6% perf-profile.calltrace.cycles-pp.fanotify_alloc_event.fanotify_handle_event.fsnotify.__fsnotify_parent.do_sys_openat2
0.98 ± 9% -0.3 0.72 ± 14% perf-profile.calltrace.cycles-pp.path_put.fanotify_free_event.fanotify_read.vfs_read.ksys_read
0.96 ± 9% -0.3 0.71 ± 14% perf-profile.calltrace.cycles-pp.dput.path_put.fanotify_free_event.fanotify_read.vfs_read
0.90 ± 9% -0.3 0.65 ± 13% perf-profile.calltrace.cycles-pp.fscrypt_file_open.ext4_file_open.do_dentry_open.dentry_open.copy_event_to_user
0.84 ± 8% -0.2 0.60 ± 14% perf-profile.calltrace.cycles-pp.lockref_put_return.dput.path_put.fanotify_free_event.fanotify_read
0.80 ± 7% -0.2 0.60 ± 9% perf-profile.calltrace.cycles-pp.refill_obj_stock.kmem_cache_free.rcu_do_batch.rcu_core.__softirqentry_text_start
0.87 ± 15% -0.2 0.68 ± 10% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.fanotify_read.vfs_read.ksys_read
0.89 ± 7% -0.1 0.76 ± 8% perf-profile.calltrace.cycles-pp.fanotify_alloc_event.fanotify_handle_event.fsnotify.__fsnotify_parent.vfs_write
0.72 ± 9% -0.1 0.60 ± 5% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__wake_up_common_lock.fsnotify_add_event.fanotify_handle_event.fsnotify
0.75 ± 6% -0.1 0.63 ± 8% perf-profile.calltrace.cycles-pp.fanotify_alloc_event.fanotify_handle_event.fsnotify.__fsnotify_parent.vfs_read
0.11 ±223% +0.7 0.83 ± 24% perf-profile.calltrace.cycles-pp.fanotify_merge.fsnotify_add_event.fanotify_handle_event.fsnotify.__fsnotify_parent
4.92 ± 15% +1.7 6.61 ± 16% perf-profile.calltrace.cycles-pp.fsnotify_add_event.fanotify_handle_event.fsnotify.__fsnotify_parent.do_sys_openat2
5.69 ± 22% +3.1 8.80 ± 23% perf-profile.calltrace.cycles-pp._raw_spin_lock.fsnotify_add_event.fanotify_handle_event.fsnotify.__fsnotify_parent
4.00 ± 37% +3.6 7.60 ± 26% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.fsnotify_add_event.fanotify_handle_event.fsnotify
0.00 +4.0 4.02 ± 12% perf-profile.calltrace.cycles-pp.apparmor_capable.security_capable.ns_capable_common.copy_event_to_user.fanotify_read
0.00 +4.1 4.07 ± 12% perf-profile.calltrace.cycles-pp.security_capable.ns_capable_common.copy_event_to_user.fanotify_read.vfs_read
0.00 +4.1 4.14 ± 12% perf-profile.calltrace.cycles-pp.ns_capable_common.copy_event_to_user.fanotify_read.vfs_read.ksys_read
7.67 ± 9% -1.7 5.97 ± 11% perf-profile.children.cycles-pp.kmem_cache_free
5.74 ± 7% -1.2 4.59 ± 9% perf-profile.children.cycles-pp.kmem_cache_alloc
4.27 ± 11% -0.9 3.36 ± 11% perf-profile.children.cycles-pp.rcu_core
6.23 ± 7% -0.9 5.32 ± 7% perf-profile.children.cycles-pp.fanotify_alloc_event
4.26 ± 11% -0.9 3.35 ± 11% perf-profile.children.cycles-pp.rcu_do_batch
4.38 ± 10% -0.9 3.48 ± 11% perf-profile.children.cycles-pp.__softirqentry_text_start
1.09 ± 13% -0.7 0.35 ± 10% perf-profile.children.cycles-pp.alloc_fd
2.87 ± 11% -0.7 2.18 ± 11% perf-profile.children.cycles-pp.ret_from_fork
2.87 ± 11% -0.7 2.18 ± 11% perf-profile.children.cycles-pp.kthread
2.85 ± 11% -0.7 2.16 ± 11% perf-profile.children.cycles-pp.smpboot_thread_fn
2.84 ± 11% -0.7 2.15 ± 11% perf-profile.children.cycles-pp.run_ksoftirqd
1.94 ± 8% -0.5 1.42 ± 10% perf-profile.children.cycles-pp.get_obj_cgroup_from_current
2.52 ± 9% -0.5 2.01 ± 6% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
3.38 ± 9% -0.5 2.88 ± 7% perf-profile.children.cycles-pp.__wake_up_common_lock
1.64 ± 8% -0.4 1.28 ± 10% perf-profile.children.cycles-pp.refill_obj_stock
1.30 ± 11% -0.3 0.98 ± 12% perf-profile.children.cycles-pp.ext4_file_open
1.53 ± 8% -0.3 1.23 ± 11% perf-profile.children.cycles-pp.path_put
0.97 ± 9% -0.3 0.72 ± 12% perf-profile.children.cycles-pp.fscrypt_file_open
0.92 ± 7% -0.2 0.71 ± 10% perf-profile.children.cycles-pp.drain_obj_stock
0.58 ± 9% -0.2 0.39 ± 10% perf-profile.children.cycles-pp.dget_parent
0.55 ± 9% -0.2 0.36 ± 9% perf-profile.children.cycles-pp.lockref_get_not_zero
0.34 ± 25% -0.1 0.22 ± 12% perf-profile.children.cycles-pp.pid_vnr
0.20 ± 15% -0.1 0.14 ± 15% perf-profile.children.cycles-pp.fsnotify_peek_first_event
0.25 ± 13% -0.1 0.20 ± 15% perf-profile.children.cycles-pp.call_rcu
0.26 ± 9% -0.1 0.20 ± 9% perf-profile.children.cycles-pp.page_counter_try_charge
0.22 ± 12% -0.1 0.17 ± 15% perf-profile.children.cycles-pp.kmem_cache_alloc_trace
0.24 ± 12% -0.1 0.19 ± 8% perf-profile.children.cycles-pp.fanotify_insert_event
0.19 ± 10% -0.1 0.13 ± 17% perf-profile.children.cycles-pp.close_fd
0.23 ± 8% -0.0 0.19 ± 13% perf-profile.children.cycles-pp.syscall_return_via_sysret
0.15 ± 10% -0.0 0.11 ± 18% perf-profile.children.cycles-pp.pick_file
0.13 ± 14% -0.0 0.10 ± 18% perf-profile.children.cycles-pp.propagate_protected_usage
0.08 ± 10% -0.0 0.05 ± 46% perf-profile.children.cycles-pp.fanotify_free_group_priv
0.16 ± 9% -0.0 0.13 ± 9% perf-profile.children.cycles-pp.rcu_all_qs
0.09 ± 13% -0.0 0.06 ± 11% perf-profile.children.cycles-pp.__fsnotify_alloc_group
0.07 ± 11% -0.0 0.04 ± 45% perf-profile.children.cycles-pp.alloc_page_buffers
0.11 ± 11% -0.0 0.09 ± 7% perf-profile.children.cycles-pp.try_to_free_buffers
0.10 ± 8% -0.0 0.08 ± 12% perf-profile.children.cycles-pp.create_empty_buffers
0.07 ± 7% -0.0 0.04 ± 45% perf-profile.children.cycles-pp.alloc_buffer_head
0.08 ± 14% -0.0 0.06 ± 11% perf-profile.children.cycles-pp.__srcu_read_lock
0.09 ± 11% -0.0 0.07 ± 17% perf-profile.children.cycles-pp.rcu_segcblist_enqueue
0.19 ± 60% +0.3 0.48 ± 30% perf-profile.children.cycles-pp.__x64_sys_ioctl
0.19 ± 61% +0.3 0.48 ± 30% perf-profile.children.cycles-pp.do_vfs_ioctl
0.19 ± 61% +0.3 0.48 ± 30% perf-profile.children.cycles-pp.fanotify_ioctl
0.81 ± 17% +0.5 1.28 ± 15% perf-profile.children.cycles-pp.fanotify_merge
5.66 ± 22% +3.0 8.69 ± 23% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
0.23 ± 9% +4.0 4.21 ± 12% perf-profile.children.cycles-pp.apparmor_capable
0.24 ± 9% +4.0 4.26 ± 12% perf-profile.children.cycles-pp.security_capable
0.24 ± 8% +4.1 4.33 ± 11% perf-profile.children.cycles-pp.ns_capable_common
4.85 ± 9% -1.1 3.72 ± 11% perf-profile.self.cycles-pp.kmem_cache_free
3.49 ± 9% -1.1 2.43 ± 9% perf-profile.self.cycles-pp._raw_spin_lock
1.81 ± 8% -0.5 1.32 ± 9% perf-profile.self.cycles-pp.get_obj_cgroup_from_current
2.04 ± 6% -0.5 1.57 ± 11% perf-profile.self.cycles-pp.kmem_cache_alloc
2.24 ± 9% -0.5 1.78 ± 6% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.97 ± 9% -0.2 0.73 ± 11% perf-profile.self.cycles-pp.do_dentry_open
0.51 ± 9% -0.2 0.33 ± 10% perf-profile.self.cycles-pp.lockref_get_not_zero
0.68 ± 9% -0.1 0.54 ± 9% perf-profile.self.cycles-pp.refill_obj_stock
0.84 ± 9% -0.1 0.70 ± 7% perf-profile.self.cycles-pp.__wake_up_common
0.55 ± 6% -0.1 0.41 ± 11% perf-profile.self.cycles-pp.drain_obj_stock
0.33 ± 25% -0.1 0.21 ± 12% perf-profile.self.cycles-pp.pid_vnr
0.30 ± 9% -0.1 0.23 ± 11% perf-profile.self.cycles-pp.dput
0.33 ± 11% -0.1 0.26 ± 12% perf-profile.self.cycles-pp.page_counter_cancel
0.19 ± 15% -0.1 0.13 ± 12% perf-profile.self.cycles-pp.fsnotify_peek_first_event
0.24 ± 11% -0.1 0.19 ± 8% perf-profile.self.cycles-pp.fanotify_insert_event
0.13 ± 14% -0.1 0.08 ± 16% perf-profile.self.cycles-pp.alloc_fd
0.23 ± 8% -0.0 0.19 ± 13% perf-profile.self.cycles-pp.syscall_return_via_sysret
0.10 ± 15% -0.0 0.07 ± 7% perf-profile.self.cycles-pp.fanotify_read
0.14 ± 9% -0.0 0.11 ± 12% perf-profile.self.cycles-pp.exit_to_user_mode_prepare
0.09 ± 11% -0.0 0.07 ± 17% perf-profile.self.cycles-pp.rcu_segcblist_enqueue
0.12 ± 16% +0.1 0.18 ± 16% perf-profile.self.cycles-pp.___slab_alloc
0.00 +0.1 0.07 ± 14% perf-profile.self.cycles-pp.ns_capable_common
0.00 +0.2 0.18 ± 24% perf-profile.self.cycles-pp.try_to_wake_up
0.17 ± 63% +0.3 0.46 ± 30% perf-profile.self.cycles-pp.fanotify_ioctl
0.79 ± 17% +0.5 1.27 ± 15% perf-profile.self.cycles-pp.fanotify_merge
5.56 ± 22% +3.0 8.59 ± 23% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
0.22 ± 9% +3.9 4.08 ± 11% perf-profile.self.cycles-pp.apparmor_capable
stress-ng.fanotify.ops_per_sec
2.2e+06 +-----------------------------------------------------------------+
| +. : + .+. .+.+.+.+.+.+..+. |
2.1e+06 |-+ + : +. .+ +..+.+ +.+ +.+.+..+ |
2e+06 |-+ + : +.+.+ + + |
| + +.+ |
1.9e+06 |-+ |
1.8e+06 |-+ |
| |
1.7e+06 |-+ |
1.6e+06 |-+ O |
| O O O |
1.5e+06 |-+ O O O O O O O |
1.4e+06 |-+ O O O O O O O O O O O O O O |
| O O O O O |
1.3e+06 +-----------------------------------------------------------------+
[*] 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
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