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Date: Thu, 11 Jun 2020 12:04:53 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Jann Horn <jannh@...gle.com>, Christoph Hellwig <hch@....de>,
Oleg Nesterov <oleg@...hat.com>,
Kirill Shutemov <kirill@...temov.name>,
Jan Kara <jack@...e.cz>,
Andrea Arcangeli <aarcange@...hat.com>,
Matthew Wilcox <willy@...radead.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org
Subject: [gup] 17839856fd: stress-ng.vm-splice.ops_per_sec 2158.6% improvement
Greeting,
FYI, we noticed a 2158.6% improvement of stress-ng.vm-splice.ops_per_sec due to commit:
commit: 17839856fd588f4ab6b789f482ed3ffd7c403e1f ("gup: document and work around "COW can break either way" issue")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: stress-ng
on test machine: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 192G memory
with following parameters:
nr_threads: 100%
disk: 1HDD
testtime: 30s
class: pipe
cpufreq_governor: performance
ucode: 0x500002c
In addition to that, the commit also has significant impact on the following tests:
+------------------+----------------------------------------------------------------------+
| testcase: change | stress-ng: stress-ng.vm-splice.ops_per_sec 372.8% improvement |
| test machine | 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 192G memory |
| test parameters | class=vm |
| | cpufreq_governor=performance |
| | disk=1HDD |
| | fs=ext4 |
| | nr_threads=10% |
| | testtime=1s |
| | ucode=0x500002c |
+------------------+----------------------------------------------------------------------+
| testcase: change | stress-ng: stress-ng.vm-splice.ops_per_sec 2052.7% improvement |
| test machine | 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 192G memory |
| test parameters | class=pipe |
| | cpufreq_governor=performance |
| | disk=1HDD |
| | nr_threads=100% |
| | testtime=1s |
| | ucode=0x500002c |
+------------------+----------------------------------------------------------------------+
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 run job.yaml
=========================================================================================
class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime/ucode:
pipe/gcc-9/performance/1HDD/x86_64-rhel-7.6/100%/debian-x86_64-20191114.cgz/lkp-csl-2sp5/stress-ng/30s/0x500002c
commit:
f359287765 ("Merge branch 'from-miklos' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs")
17839856fd ("gup: document and work around "COW can break either way" issue")
f359287765c04711 17839856fd588f4ab6b789f482e
---------------- ---------------------------
%stddev %change %stddev
\ | \
17619 -2.1% 17246 stress-ng.time.system_time
1529 +24.1% 1898 stress-ng.time.user_time
1.533e+08 +2158.7% 3.463e+09 stress-ng.vm-splice.ops
5110873 +2158.6% 1.154e+08 stress-ng.vm-splice.ops_per_sec
90027 ± 3% -12.6% 78647 ± 6% meminfo.PageTables
7.48 +1.8 9.28 mpstat.cpu.all.usr%
85.50 -2.0% 83.75 vmstat.cpu.sy
85.79 -1.8% 84.24 iostat.cpu.system
7.41 +24.5% 9.22 iostat.cpu.user
6131 ± 66% +117.4% 13330 ± 33% proc-vmstat.numa_hint_faults
1347 ± 29% +282.1% 5149 ± 50% proc-vmstat.numa_hint_faults_local
1239 ± 9% +14.4% 1417 ± 5% slabinfo.kmalloc-rcl-96.active_objs
1239 ± 9% +14.4% 1417 ± 5% slabinfo.kmalloc-rcl-96.num_objs
0.13 ± 6% -0.0 0.11 ± 6% perf-profile.children.cycles-pp.check_preempt_curr
0.17 ± 6% +0.0 0.20 ± 10% perf-profile.children.cycles-pp.rw_verify_area
0.44 ± 5% +0.0 0.48 ± 3% perf-profile.children.cycles-pp.__irqentry_text_start
339.81 ± 10% -28.3% 243.75 ± 14% sched_debug.cfs_rq:/.exec_clock.stddev
5.95 ± 12% +24.5% 7.41 ± 6% sched_debug.cpu.clock.stddev
5.95 ± 12% +24.5% 7.41 ± 6% sched_debug.cpu.clock_task.stddev
24316 ± 7% +28.4% 31224 ± 10% interrupts.CPU15.RES:Rescheduling_interrupts
38416 ± 26% -35.0% 24985 ± 23% interrupts.CPU17.RES:Rescheduling_interrupts
20612 ± 19% +85.9% 38315 ± 38% interrupts.CPU54.RES:Rescheduling_interrupts
26788 ± 48% +66.2% 44527 ± 31% interrupts.CPU57.RES:Rescheduling_interrupts
21724 ± 15% +55.8% 33857 ± 23% interrupts.CPU70.RES:Rescheduling_interrupts
4845 ± 35% +59.4% 7723 ± 2% interrupts.CPU87.NMI:Non-maskable_interrupts
4845 ± 35% +59.4% 7723 ± 2% interrupts.CPU87.PMI:Performance_monitoring_interrupts
4843 ± 35% +59.5% 7723 ± 2% interrupts.CPU89.NMI:Non-maskable_interrupts
4843 ± 35% +59.5% 7723 ± 2% interrupts.CPU89.PMI:Performance_monitoring_interrupts
4846 ± 35% +59.3% 7721 ± 2% interrupts.CPU90.NMI:Non-maskable_interrupts
4846 ± 35% +59.3% 7721 ± 2% interrupts.CPU90.PMI:Performance_monitoring_interrupts
25860 ± 27% -27.2% 18820 ± 17% interrupts.CPU91.RES:Rescheduling_interrupts
8.59 -9.4% 7.78 perf-stat.i.MPKI
3.695e+10 +17.1% 4.328e+10 perf-stat.i.branch-instructions
2.054e+08 +28.4% 2.638e+08 perf-stat.i.branch-misses
11.31 ± 5% -2.2 9.07 ± 5% perf-stat.i.cache-miss-rate%
3.74 -54.4% 1.70 perf-stat.i.cpi
54067 ± 66% +311.0% 222217 ± 18% perf-stat.i.cycles-between-cache-misses
0.04 ± 5% -0.0 0.03 ± 5% perf-stat.i.dTLB-load-miss-rate%
6065752 ± 7% -10.9% 5407417 ± 4% perf-stat.i.dTLB-load-misses
4.522e+10 +20.4% 5.444e+10 perf-stat.i.dTLB-loads
2.697e+10 +20.9% 3.26e+10 perf-stat.i.dTLB-stores
1.464e+08 +36.3% 1.996e+08 ± 2% perf-stat.i.iTLB-load-misses
1.77e+11 +18.5% 2.098e+11 perf-stat.i.instructions
0.71 +18.5% 0.84 perf-stat.i.ipc
2.58 -1.9% 2.53 perf-stat.i.metric.GHz
1131 +18.8% 1344 perf-stat.i.metric.M/sec
85.95 -2.7 83.28 ± 2% perf-stat.i.node-load-miss-rate%
89.18 -0.9 88.25 perf-stat.i.node-store-miss-rate%
3.29 ± 2% -17.3% 2.72 perf-stat.overall.MPKI
0.56 +0.1 0.61 perf-stat.overall.branch-miss-rate%
1.42 -16.9% 1.18 perf-stat.overall.cpi
0.01 ± 8% -0.0 0.01 ± 3% perf-stat.overall.dTLB-load-miss-rate%
94.12 +1.5 95.58 perf-stat.overall.iTLB-load-miss-rate%
1198 -12.7% 1046 perf-stat.overall.instructions-per-iTLB-miss
0.71 +20.4% 0.85 perf-stat.overall.ipc
3.62e+10 +18.1% 4.276e+10 perf-stat.ps.branch-instructions
2.026e+08 +29.2% 2.618e+08 perf-stat.ps.branch-misses
4.436e+10 +21.4% 5.385e+10 perf-stat.ps.dTLB-loads
2.644e+10 +21.9% 3.222e+10 perf-stat.ps.dTLB-stores
1.448e+08 +37.0% 1.983e+08 ± 2% perf-stat.ps.iTLB-load-misses
1.734e+11 +19.5% 2.073e+11 perf-stat.ps.instructions
3.673e+13 +19.5% 4.389e+13 perf-stat.total.instructions
10749 ± 5% +7.4% 11548 ± 4% softirqs.CPU10.RCU
10512 +8.6% 11414 ± 2% softirqs.CPU13.RCU
10476 ± 2% +9.8% 11503 ± 4% softirqs.CPU14.RCU
10790 ± 2% +10.6% 11938 ± 4% softirqs.CPU18.RCU
10721 ± 2% +10.5% 11842 ± 4% softirqs.CPU19.RCU
10754 ± 2% +9.8% 11804 softirqs.CPU2.RCU
10792 ± 4% +9.5% 11819 ± 3% softirqs.CPU20.RCU
10722 +10.9% 11893 ± 3% softirqs.CPU22.RCU
10968 ± 6% +10.4% 12110 ± 5% softirqs.CPU23.RCU
11012 ± 4% +22.6% 13503 ± 14% softirqs.CPU24.RCU
10584 ± 5% +12.4% 11899 ± 5% softirqs.CPU28.RCU
10512 ± 2% +13.8% 11966 ± 6% softirqs.CPU29.RCU
10826 ± 3% +8.0% 11696 ± 4% softirqs.CPU30.RCU
10482 +8.7% 11390 ± 3% softirqs.CPU31.RCU
10400 ± 4% +8.8% 11315 ± 3% softirqs.CPU32.RCU
10356 +9.7% 11361 ± 4% softirqs.CPU34.RCU
10193 +10.3% 11239 ± 4% softirqs.CPU35.RCU
10159 ± 2% +11.7% 11346 ± 3% softirqs.CPU37.RCU
10262 ± 2% +10.7% 11360 ± 3% softirqs.CPU38.RCU
10077 ± 2% +10.8% 11163 ± 4% softirqs.CPU40.RCU
10204 +9.2% 11142 ± 2% softirqs.CPU41.RCU
10523 ± 4% +6.8% 11238 ± 3% softirqs.CPU43.RCU
10015 +10.5% 11064 ± 3% softirqs.CPU44.RCU
10376 ± 5% +8.0% 11202 ± 4% softirqs.CPU45.RCU
10164 +9.1% 11090 ± 4% softirqs.CPU46.RCU
10176 ± 4% +8.8% 11071 ± 3% softirqs.CPU47.RCU
10739 +10.4% 11853 ± 3% softirqs.CPU49.RCU
10569 ± 3% +14.7% 12120 ± 3% softirqs.CPU51.RCU
10627 ± 5% +12.7% 11976 ± 3% softirqs.CPU52.RCU
10507 +12.9% 11858 ± 5% softirqs.CPU53.RCU
10413 +10.3% 11482 ± 3% softirqs.CPU54.RCU
11050 ± 3% +6.1% 11720 ± 4% softirqs.CPU64.RCU
10663 +10.5% 11781 ± 4% softirqs.CPU65.RCU
10461 ± 2% +10.4% 11544 ± 4% softirqs.CPU67.RCU
10565 ± 2% +11.7% 11804 ± 5% softirqs.CPU71.RCU
10200 ± 2% +22.8% 12529 ± 20% softirqs.CPU74.RCU
10078 +23.0% 12396 ± 16% softirqs.CPU75.RCU
10182 +9.0% 11101 ± 4% softirqs.CPU77.RCU
9994 ± 2% +12.1% 11201 ± 4% softirqs.CPU79.RCU
9848 +11.2% 10954 ± 5% softirqs.CPU80.RCU
9802 ± 2% +12.4% 11017 ± 5% softirqs.CPU81.RCU
9924 +9.8% 10893 ± 4% softirqs.CPU82.RCU
9921 +9.9% 10906 ± 3% softirqs.CPU83.RCU
9905 ± 2% +10.7% 10963 ± 5% softirqs.CPU85.RCU
9901 +8.5% 10746 ± 3% softirqs.CPU87.RCU
9953 ± 2% +10.5% 10997 ± 2% softirqs.CPU88.RCU
9944 +11.1% 11047 ± 5% softirqs.CPU89.RCU
9986 +8.1% 10796 ± 4% softirqs.CPU90.RCU
9796 ± 2% +10.4% 10812 ± 4% softirqs.CPU91.RCU
9750 +10.9% 10816 ± 4% softirqs.CPU93.RCU
10018 +9.8% 10997 ± 3% softirqs.CPU95.RCU
1009159 +9.1% 1101411 ± 3% softirqs.RCU
stress-ng.time.user_time
2500 +--------------------------------------------------------------------+
| |
| |
2000 |-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 |
|.+..+.+. .+. .+.+.+.. .+. .+.+.+. .+.+.+..+. .+..+.+.+.+.. |
1500 |-+ +. +.+.+. + +. +. + + |
| |
1000 |-+ |
| |
| |
500 |-+ |
| |
| |
0 +--------------------------------------------------------------------+
stress-ng.time.system_time
18000 +-------------------------------------------------------------------+
| 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 |
16000 |-+ |
14000 |-+ |
| |
12000 |-+ |
10000 |-+ |
| |
8000 |-+ |
6000 |-+ |
| |
4000 |-+ |
2000 |-+ |
| |
0 +-------------------------------------------------------------------+
stress-ng.vm-splice.ops
3.5e+09 +-----------------------------------------------------------------+
| |
3e+09 |-+ |
| |
2.5e+09 |-+ |
| |
2e+09 |-+ |
| |
1.5e+09 |-+ |
| |
1e+09 |-+ |
| |
5e+08 |-+ |
|.+.+..+.+.+.+.+..+.+.+.+.+..+.+.+.+.+..+.+.+.+.+..+.+.+.+.+..+.+ |
0 +-----------------------------------------------------------------+
stress-ng.vm-splice.ops_per_sec
1.2e+08 +-----------------------------------------------------------------+
| O O O O O O O O O O O O O O O O O O O O O O O O |
1e+08 |-+ |
| |
| |
8e+07 |-+ |
| |
6e+07 |-+ |
| |
4e+07 |-+ |
| |
| |
2e+07 |-+ |
|.+.+..+.+.+.+.+..+.+.+.+.+..+.+.+.+.+..+.+.+.+.+..+.+.+.+.+..+.+ |
0 +-----------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
***************************************************************************************************
lkp-cfl-e1: 16 threads Intel(R) Xeon(R) E-2278G CPU @ 3.40GHz with 32G memory
***************************************************************************************************
lkp-csl-2sp5: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 192G memory
=========================================================================================
class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime/ucode:
vm/gcc-9/performance/1HDD/ext4/x86_64-rhel-7.6/10%/debian-x86_64-20191114.cgz/lkp-csl-2sp5/stress-ng/1s/0x500002c
commit:
f359287765 ("Merge branch 'from-miklos' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs")
17839856fd ("gup: document and work around "COW can break either way" issue")
f359287765c04711 17839856fd588f4ab6b789f482e
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
1:4 -25% :4 kmsg.Memory_failure:#:recovery_action_for_reserved_kernel_page:Failed
1:4 -25% :4 kmsg.Memory_failure:#:reserved_kernel_page_still_referenced_by#users
0:4 14% 1:4 perf-profile.calltrace.cycles-pp.sync_regs.error_entry
0:4 15% 1:4 perf-profile.calltrace.cycles-pp.error_entry
2:4 2% 2:4 perf-profile.children.cycles-pp.error_entry
0:4 0% 0:4 perf-profile.self.cycles-pp.error_entry
%stddev %change %stddev
\ | \
3752446 ± 5% +372.8% 17743420 stress-ng.vm-splice.ops
3753307 ± 5% +372.8% 17744113 stress-ng.vm-splice.ops_per_sec
352732 ± 38% -37.5% 220415 ± 19% meminfo.AnonHugePages
6088 ± 4% -8.4% 5575 ± 4% vmstat.io.bo
26.97 +2.2% 27.56 boot-time.boot
16.63 +1.1% 16.82 boot-time.dhcp
11097144 ± 4% +9.4% 12140802 ± 3% cpuidle.C1.time
1306863 ± 5% +10.0% 1438008 ± 4% cpuidle.C1.usage
20928 ± 19% +40.5% 29401 ± 12% sched_debug.cfs_rq:/.min_vruntime.max
621.93 ± 5% -10.6% 556.11 ± 5% sched_debug.cpu.curr->pid.stddev
1413502 ± 10% +9.9% 1552782 proc-vmstat.nr_foll_pin_acquired
1413411 ± 10% +9.9% 1552695 proc-vmstat.nr_foll_pin_released
83634280 ± 3% -4.1% 80233229 proc-vmstat.pgalloc_normal
83604544 ± 3% -4.1% 80204856 proc-vmstat.pgfree
2279 ± 3% +13.7% 2591 slabinfo.khugepaged_mm_slot.active_objs
2279 ± 3% +13.7% 2591 slabinfo.khugepaged_mm_slot.num_objs
51107 ± 4% -12.7% 44626 ± 7% slabinfo.lsm_file_cache.active_objs
53253 ± 3% -12.1% 46810 ± 7% slabinfo.lsm_file_cache.num_objs
0.94 ± 8% +0.1 1.07 ± 6% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__get_user_pages.populate_vma_page_range.__mm_populate
0.96 ± 8% +0.1 1.09 ± 6% perf-profile.calltrace.cycles-pp.handle_mm_fault.__get_user_pages.populate_vma_page_range.__mm_populate.vm_mmap_pgoff
0.11 ± 30% +0.1 0.16 ± 16% perf-profile.children.cycles-pp.anon_vma_fork
0.12 ± 18% +0.0 0.17 ± 13% perf-profile.self.cycles-pp.filemap_map_pages
6.418e+09 +1.2% 6.498e+09 perf-stat.i.branch-instructions
3572544 +2.1% 3646846 perf-stat.i.iTLB-loads
3.035e+10 +1.4% 3.078e+10 perf-stat.i.instructions
20346 -5.6% 19202 ± 2% perf-stat.i.major-faults
7.69 ± 4% -3.5% 7.42 ± 3% perf-stat.overall.MPKI
6.243e+09 +1.3% 6.322e+09 perf-stat.ps.branch-instructions
35907601 +3.8% 37255792 ± 3% perf-stat.ps.branch-misses
3.127e+09 +1.2% 3.165e+09 perf-stat.ps.dTLB-stores
3453004 +2.3% 3531803 perf-stat.ps.iTLB-loads
2.951e+10 +1.5% 2.994e+10 perf-stat.ps.instructions
19574 -5.4% 18514 ± 2% perf-stat.ps.major-faults
38744 ± 10% -27.2% 28219 ± 12% interrupts.CPU24.TLB:TLB_shootdowns
2974 ± 44% -77.7% 662.50 ± 29% interrupts.CPU27.NMI:Non-maskable_interrupts
2974 ± 44% -77.7% 662.50 ± 29% interrupts.CPU27.PMI:Performance_monitoring_interrupts
2511 ± 40% -70.7% 736.25 ± 7% interrupts.CPU28.NMI:Non-maskable_interrupts
2511 ± 40% -70.7% 736.25 ± 7% interrupts.CPU28.PMI:Performance_monitoring_interrupts
37767 ± 28% -28.1% 27157 ± 14% interrupts.CPU28.TLB:TLB_shootdowns
2729 ± 63% -60.8% 1070 ± 86% interrupts.CPU32.NMI:Non-maskable_interrupts
2729 ± 63% -60.8% 1070 ± 86% interrupts.CPU32.PMI:Performance_monitoring_interrupts
2934 ± 59% -66.9% 971.75 ± 90% interrupts.CPU33.NMI:Non-maskable_interrupts
2934 ± 59% -66.9% 971.75 ± 90% interrupts.CPU33.PMI:Performance_monitoring_interrupts
18203 ± 7% +17.7% 21419 ± 9% interrupts.CPU59.CAL:Function_call_interrupts
24514 ± 8% +19.0% 29165 ± 10% interrupts.CPU59.TLB:TLB_shootdowns
99.25 ± 11% -19.9% 79.50 ± 13% interrupts.CPU62.RES:Rescheduling_interrupts
19246 ± 8% +19.6% 23023 ± 6% interrupts.CPU68.CAL:Function_call_interrupts
26764 ± 7% +18.4% 31691 ± 8% interrupts.CPU68.TLB:TLB_shootdowns
3799 ± 52% -80.9% 726.25 ± 22% interrupts.CPU74.NMI:Non-maskable_interrupts
3799 ± 52% -80.9% 726.25 ± 22% interrupts.CPU74.PMI:Performance_monitoring_interrupts
3149 ± 49% -79.8% 635.50 ± 21% interrupts.CPU75.NMI:Non-maskable_interrupts
3149 ± 49% -79.8% 635.50 ± 21% interrupts.CPU75.PMI:Performance_monitoring_interrupts
2709 ± 42% -73.4% 719.75 ± 26% interrupts.CPU76.NMI:Non-maskable_interrupts
2709 ± 42% -73.4% 719.75 ± 26% interrupts.CPU76.PMI:Performance_monitoring_interrupts
2364 ± 40% -57.3% 1009 ± 38% interrupts.CPU79.NMI:Non-maskable_interrupts
2364 ± 40% -57.3% 1009 ± 38% interrupts.CPU79.PMI:Performance_monitoring_interrupts
3030 ± 48% -68.1% 967.50 ± 38% interrupts.CPU81.NMI:Non-maskable_interrupts
3030 ± 48% -68.1% 967.50 ± 38% interrupts.CPU81.PMI:Performance_monitoring_interrupts
2845 ± 67% -51.8% 1370 ± 83% interrupts.CPU83.NMI:Non-maskable_interrupts
2845 ± 67% -51.8% 1370 ± 83% interrupts.CPU83.PMI:Performance_monitoring_interrupts
27279 ± 11% +23.0% 33551 ± 9% interrupts.CPU84.TLB:TLB_shootdowns
36061 ± 8% -14.6% 30804 ± 6% interrupts.CPU92.TLB:TLB_shootdowns
29829 ± 5% -14.1% 25619 ± 11% interrupts.CPU94.TLB:TLB_shootdowns
160996 ± 9% -11.9% 141904 ± 11% interrupts.NMI:Non-maskable_interrupts
160996 ± 9% -11.9% 141904 ± 11% interrupts.PMI:Performance_monitoring_interrupts
***************************************************************************************************
lkp-csl-2sp5: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 192G memory
=========================================================================================
class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime/ucode:
pipe/gcc-9/performance/1HDD/x86_64-rhel-7.6/100%/debian-x86_64-20191114.cgz/lkp-csl-2sp5/stress-ng/1s/0x500002c
commit:
f359287765 ("Merge branch 'from-miklos' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs")
17839856fd ("gup: document and work around "COW can break either way" issue")
f359287765c04711 17839856fd588f4ab6b789f482e
---------------- ---------------------------
%stddev %change %stddev
\ | \
816942 ± 8% -12.0% 719276 stress-ng.time.involuntary_context_switches
235279 -4.0% 225847 stress-ng.time.minor_page_faults
599.87 -2.8% 583.29 stress-ng.time.system_time
47.33 ± 2% +28.2% 60.69 stress-ng.time.user_time
5412114 ± 5% +2054.0% 1.166e+08 stress-ng.vm-splice.ops
5417324 ± 5% +2052.7% 1.166e+08 stress-ng.vm-splice.ops_per_sec
16.42 +1.2% 16.62 boot-time.dhcp
5.94 ± 4% +24.7% 7.41 ± 4% iostat.cpu.user
7.12 ± 5% +1.4 8.52 ± 2% mpstat.cpu.all.usr%
1.61e+08 ± 11% -50.9% 79016011 ± 47% cpuidle.C1E.time
984623 ± 12% -21.5% 772591 ± 14% cpuidle.C1E.usage
19231 ± 11% +21.8% 23416 ± 8% numa-meminfo.node0.Mapped
938.25 ± 85% -55.9% 413.50 ±173% numa-meminfo.node1.Inactive(file)
4850 ± 11% +18.6% 5754 ± 10% numa-vmstat.node0.nr_mapped
234.00 ± 85% -55.9% 103.25 ±173% numa-vmstat.node1.nr_inactive_file
234.00 ± 85% -55.9% 103.25 ±173% numa-vmstat.node1.nr_zone_inactive_file
9049 +13.7% 10287 ± 11% softirqs.CPU44.TIMER
9712 ± 10% -12.2% 8524 softirqs.CPU57.TIMER
9235 ± 6% -7.3% 8560 ± 3% softirqs.CPU82.TIMER
8160 +5.6% 8617 ± 5% proc-vmstat.nr_shmem
57724 +3.1% 59541 proc-vmstat.nr_slab_unreclaimable
29.50 ± 78% +11075.4% 3296 ± 69% proc-vmstat.numa_hint_faults_local
295784 -2.1% 289478 proc-vmstat.pgfault
7320 ± 9% -30.6% 5078 ± 22% sched_debug.cfs_rq:/.min_vruntime.min
836.06 ± 11% +16.2% 971.79 ± 5% sched_debug.cfs_rq:/.runnable_avg.stddev
55.75 ± 14% +18.8% 66.25 ± 6% sched_debug.cpu.nr_uninterruptible.max
-59.50 -16.8% -49.50 sched_debug.cpu.nr_uninterruptible.min
773.00 ± 6% +30.9% 1011 ± 14% interrupts.CPU14.RES:Rescheduling_interrupts
2901 ± 34% +43.0% 4147 ± 24% interrupts.CPU16.NMI:Non-maskable_interrupts
2901 ± 34% +43.0% 4147 ± 24% interrupts.CPU16.PMI:Performance_monitoring_interrupts
969.25 ± 10% +74.4% 1690 ± 51% interrupts.CPU31.RES:Rescheduling_interrupts
989.25 ± 12% +39.0% 1375 interrupts.CPU54.RES:Rescheduling_interrupts
1207 ± 18% -24.7% 908.75 ± 10% interrupts.CPU68.RES:Rescheduling_interrupts
884.75 ± 11% +33.3% 1179 ± 11% interrupts.CPU8.RES:Rescheduling_interrupts
1015 ± 8% +22.4% 1243 ± 5% interrupts.CPU81.RES:Rescheduling_interrupts
865.50 ± 8% +18.7% 1027 ± 7% interrupts.CPU9.RES:Rescheduling_interrupts
80.00 ± 69% -53.4% 37.25 ± 15% interrupts.TLB:TLB_shootdowns
4.42 ± 10% +34.9% 5.96 ± 25% perf-stat.i.MPKI
2.426e+08 +2.0% 2.473e+08 perf-stat.i.branch-misses
5.281e+08 ± 7% +10.8% 5.85e+08 ± 4% perf-stat.i.cache-references
0.02 ± 7% +0.0 0.03 ± 25% perf-stat.i.dTLB-load-miss-rate%
37835 -3.7% 36434 perf-stat.i.minor-faults
37835 -3.7% 36434 perf-stat.i.page-faults
3.25 ± 6% +10.1% 3.58 ± 3% perf-stat.overall.MPKI
2.115e+08 +2.1% 2.158e+08 perf-stat.ps.branch-misses
4.613e+08 ± 7% +10.9% 5.116e+08 ± 3% perf-stat.ps.cache-references
33390 -2.3% 32620 perf-stat.ps.minor-faults
33390 -2.3% 32620 perf-stat.ps.page-faults
1.154e+12 +1.2% 1.168e+12 perf-stat.total.instructions
11.58 -11.6 0.00 perf-profile.calltrace.cycles-pp.get_user_pages_unlocked.internal_get_user_pages_fast.iov_iter_get_pages.iter_to_pipe.do_vmsplice
11.26 -11.3 0.00 perf-profile.calltrace.cycles-pp.__get_user_pages.get_user_pages_unlocked.internal_get_user_pages_fast.iov_iter_get_pages.iter_to_pipe
11.17 -11.2 0.00 perf-profile.calltrace.cycles-pp.follow_page_pte.__get_user_pages.get_user_pages_unlocked.internal_get_user_pages_fast.iov_iter_get_pages
11.64 -9.4 2.29 ± 3% perf-profile.calltrace.cycles-pp.internal_get_user_pages_fast.iov_iter_get_pages.iter_to_pipe.do_vmsplice.__do_sys_vmsplice
11.67 -9.0 2.67 ± 3% perf-profile.calltrace.cycles-pp.iov_iter_get_pages.iter_to_pipe.do_vmsplice.__do_sys_vmsplice.do_syscall_64
11.70 -8.1 3.63 ± 3% perf-profile.calltrace.cycles-pp.iter_to_pipe.do_vmsplice.__do_sys_vmsplice.do_syscall_64.entry_SYSCALL_64_after_hwframe
12.08 -7.1 4.94 ± 3% perf-profile.calltrace.cycles-pp.do_vmsplice.__do_sys_vmsplice.do_syscall_64.entry_SYSCALL_64_after_hwframe.vmsplice
6.36 -6.4 0.00 perf-profile.calltrace.cycles-pp.mark_page_accessed.follow_page_pte.__get_user_pages.get_user_pages_unlocked.internal_get_user_pages_fast
12.16 -5.1 7.10 ± 3% perf-profile.calltrace.cycles-pp.__do_sys_vmsplice.do_syscall_64.entry_SYSCALL_64_after_hwframe.vmsplice
12.18 -4.6 7.54 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.vmsplice
12.19 -4.4 7.77 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.vmsplice
8.73 -3.0 5.75 ± 3% perf-profile.calltrace.cycles-pp.__splice_from_pipe.splice_from_pipe.do_splice.__x64_sys_splice.do_syscall_64
12.25 -2.9 9.32 ± 3% perf-profile.calltrace.cycles-pp.vmsplice
9.79 -1.8 7.97 ± 3% perf-profile.calltrace.cycles-pp.splice_from_pipe.do_splice.__x64_sys_splice.do_syscall_64.entry_SYSCALL_64_after_hwframe
8.60 ± 7% -0.8 7.80 ± 5% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
8.60 ± 7% -0.8 7.80 ± 5% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
8.60 ± 7% -0.8 7.80 ± 5% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
12.20 ± 2% -0.6 11.62 perf-profile.calltrace.cycles-pp.enqueue_task_fair.activate_task.ttwu_do_activate.try_to_wake_up.autoremove_wake_function
12.22 ± 3% -0.6 11.64 perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
12.22 ± 3% -0.6 11.64 perf-profile.calltrace.cycles-pp.activate_task.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common
10.57 -0.6 10.02 perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.pipe_write.new_sync_write
10.53 -0.6 9.98 perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.pipe_write
6.78 ± 2% -0.4 6.38 ± 2% perf-profile.calltrace.cycles-pp.prepare_to_wait_event.pipe_read.new_sync_read.vfs_read.ksys_read
6.57 ± 2% -0.4 6.20 ± 2% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.prepare_to_wait_event.pipe_read.new_sync_read.vfs_read
6.50 ± 2% -0.4 6.13 ± 2% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.prepare_to_wait_event.pipe_read.new_sync_read
0.55 ± 8% -0.3 0.26 ±100% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__libc_fork
0.55 ± 8% -0.3 0.26 ±100% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork
0.55 ± 8% -0.3 0.26 ±100% perf-profile.calltrace.cycles-pp.__do_sys_clone.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork
0.55 ± 8% -0.3 0.26 ±100% perf-profile.calltrace.cycles-pp._do_fork.__do_sys_clone.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork
3.23 -0.3 2.94 ± 3% perf-profile.calltrace.cycles-pp.direct_splice_actor.splice_direct_to_actor.do_splice_direct.do_sendfile.__x64_sys_sendfile64
3.19 -0.3 2.90 ± 3% perf-profile.calltrace.cycles-pp.splice_from_pipe.direct_splice_actor.splice_direct_to_actor.do_splice_direct.do_sendfile
2.94 -0.3 2.68 ± 3% perf-profile.calltrace.cycles-pp.__splice_from_pipe.splice_from_pipe.direct_splice_actor.splice_direct_to_actor.do_splice_direct
1.93 ± 2% -0.2 1.78 ± 3% perf-profile.calltrace.cycles-pp.push_pipe.iov_iter_get_pages_alloc.default_file_splice_read.do_splice.__x64_sys_splice
1.75 ± 2% -0.1 1.62 ± 3% perf-profile.calltrace.cycles-pp.xas_load.find_get_entry.pagecache_get_page.generic_file_buffered_read.generic_file_splice_read
1.39 ± 2% -0.1 1.30 ± 3% perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.push_pipe.iov_iter_get_pages_alloc.default_file_splice_read.do_splice
0.80 ± 2% -0.1 0.72 ± 2% perf-profile.calltrace.cycles-pp.sanity.copy_page_to_iter.generic_file_buffered_read.generic_file_splice_read.splice_direct_to_actor
0.55 ± 3% -0.0 0.53 perf-profile.calltrace.cycles-pp.free_unref_page.__splice_from_pipe.splice_from_pipe.do_splice.__x64_sys_splice
0.58 ± 3% +0.1 0.64 ± 4% perf-profile.calltrace.cycles-pp.__kmalloc_node.iov_iter_get_pages_alloc.default_file_splice_read.do_splice.__x64_sys_splice
1.07 ± 5% +0.1 1.19 ± 3% perf-profile.calltrace.cycles-pp.copy_user_enhanced_fast_string.copyout.copy_page_to_iter.pipe_read.new_sync_read
1.20 ± 4% +0.1 1.32 ± 2% perf-profile.calltrace.cycles-pp.copyout.copy_page_to_iter.pipe_read.new_sync_read.vfs_read
1.54 ± 4% +0.2 1.74 ± 2% perf-profile.calltrace.cycles-pp.copy_page_to_iter.pipe_read.new_sync_read.vfs_read.ksys_read
0.00 +0.6 0.56 ± 4% perf-profile.calltrace.cycles-pp.mutex_lock.do_vmsplice.__do_sys_vmsplice.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.58 ± 14% +0.7 1.33 ± 5% perf-profile.calltrace.cycles-pp.security_file_permission.do_splice.__x64_sys_splice.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.96 ± 2% +0.8 1.72 ± 4% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.splice
0.00 +0.8 0.79 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.vmsplice
0.00 +0.8 0.84 ± 4% perf-profile.calltrace.cycles-pp.__fget_light.__x64_sys_splice.do_syscall_64.entry_SYSCALL_64_after_hwframe.splice
0.14 ±173% +0.8 0.98 ± 7% perf-profile.calltrace.cycles-pp.common_file_perm.security_file_permission.do_splice.__x64_sys_splice.do_syscall_64
0.00 +0.9 0.87 ± 2% perf-profile.calltrace.cycles-pp._copy_from_user.rw_copy_check_uvector.import_iovec.__do_sys_vmsplice.do_syscall_64
0.00 +0.9 0.89 ± 3% perf-profile.calltrace.cycles-pp.mutex_lock.splice_from_pipe.do_splice.__x64_sys_splice.do_syscall_64
0.00 +1.3 1.28 ± 2% perf-profile.calltrace.cycles-pp.rw_copy_check_uvector.import_iovec.__do_sys_vmsplice.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +1.5 1.53 ± 2% perf-profile.calltrace.cycles-pp.import_iovec.__do_sys_vmsplice.do_syscall_64.entry_SYSCALL_64_after_hwframe.vmsplice
0.00 +1.9 1.94 ± 3% perf-profile.calltrace.cycles-pp.gup_pgd_range.internal_get_user_pages_fast.iov_iter_get_pages.iter_to_pipe.do_vmsplice
23.74 +3.0 26.75 ± 3% perf-profile.calltrace.cycles-pp.splice
11.58 -11.6 0.00 perf-profile.children.cycles-pp.get_user_pages_unlocked
11.26 -11.3 0.00 perf-profile.children.cycles-pp.__get_user_pages
11.17 -11.2 0.00 perf-profile.children.cycles-pp.follow_page_pte
11.64 -9.3 2.32 ± 3% perf-profile.children.cycles-pp.internal_get_user_pages_fast
11.67 -9.0 2.68 ± 3% perf-profile.children.cycles-pp.iov_iter_get_pages
11.70 -8.0 3.67 ± 3% perf-profile.children.cycles-pp.iter_to_pipe
12.08 -7.0 5.04 ± 3% perf-profile.children.cycles-pp.do_vmsplice
7.09 -6.4 0.69 ± 4% perf-profile.children.cycles-pp.mark_page_accessed
12.16 -5.0 7.15 ± 3% perf-profile.children.cycles-pp.__do_sys_vmsplice
5.55 -4.0 1.52 ± 3% perf-profile.children.cycles-pp.page_cache_pipe_buf_release
11.81 -3.2 8.62 ± 3% perf-profile.children.cycles-pp.__splice_from_pipe
86.84 -2.7 84.19 perf-profile.children.cycles-pp.do_syscall_64
12.27 -2.5 9.74 ± 3% perf-profile.children.cycles-pp.vmsplice
87.27 -2.2 85.05 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
13.00 -2.1 10.91 ± 3% perf-profile.children.cycles-pp.splice_from_pipe
8.60 ± 7% -0.8 7.80 ± 5% perf-profile.children.cycles-pp.start_secondary
16.27 -0.6 15.63 perf-profile.children.cycles-pp.autoremove_wake_function
6.85 ± 2% -0.4 6.46 ± 2% perf-profile.children.cycles-pp.prepare_to_wait_event
3.24 -0.3 2.95 ± 3% perf-profile.children.cycles-pp.direct_splice_actor
0.57 ± 2% -0.2 0.38 ± 4% perf-profile.children.cycles-pp.page_cache_pipe_buf_confirm
1.94 ± 2% -0.1 1.79 ± 2% perf-profile.children.cycles-pp.push_pipe
1.80 ± 2% -0.1 1.67 ± 3% perf-profile.children.cycles-pp.xas_load
0.20 ± 7% -0.1 0.10 ± 19% perf-profile.children.cycles-pp.kthread
0.21 ± 6% -0.1 0.12 ± 17% perf-profile.children.cycles-pp.ret_from_fork
0.86 ± 2% -0.1 0.77 ± 2% perf-profile.children.cycles-pp.sanity
0.16 ± 5% -0.1 0.09 ± 26% perf-profile.children.cycles-pp.memcpy_erms
0.15 ± 4% -0.1 0.09 ± 26% perf-profile.children.cycles-pp.drm_fb_helper_dirty_work
0.36 -0.1 0.30 perf-profile.children.cycles-pp.alloc_pages_current
1.89 -0.1 1.83 perf-profile.children.cycles-pp.__alloc_pages_nodemask
0.16 ± 5% -0.1 0.10 ± 23% perf-profile.children.cycles-pp.worker_thread
0.16 ± 5% -0.1 0.10 ± 23% perf-profile.children.cycles-pp.process_one_work
0.56 ± 9% -0.1 0.50 ± 5% perf-profile.children.cycles-pp.__do_sys_clone
0.56 ± 9% -0.1 0.50 ± 5% perf-profile.children.cycles-pp._do_fork
0.60 ± 7% -0.1 0.55 ± 4% perf-profile.children.cycles-pp.__libc_fork
0.52 ± 9% -0.1 0.47 ± 5% perf-profile.children.cycles-pp.copy_process
0.10 ± 5% -0.0 0.07 ± 6% perf-profile.children.cycles-pp.get_task_policy
0.11 -0.0 0.09 ± 8% perf-profile.children.cycles-pp.copy_page_range
0.07 ± 5% -0.0 0.06 ± 7% perf-profile.children.cycles-pp.free_pcp_prepare
0.11 ± 4% -0.0 0.09 ± 4% perf-profile.children.cycles-pp.prep_new_page
0.17 ± 2% +0.0 0.18 perf-profile.children.cycles-pp.scheduler_tick
0.09 ± 4% +0.0 0.10 perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64
0.34 ± 2% +0.0 0.36 perf-profile.children.cycles-pp.__hrtimer_run_queues
0.37 +0.0 0.39 ± 2% perf-profile.children.cycles-pp.current_time
0.05 ± 8% +0.0 0.08 perf-profile.children.cycles-pp.kill_fasync
0.24 ± 5% +0.0 0.27 ± 4% perf-profile.children.cycles-pp.update_cfs_group
0.65 ± 2% +0.0 0.68 perf-profile.children.cycles-pp.smp_apic_timer_interrupt
0.53 ± 3% +0.0 0.56 perf-profile.children.cycles-pp.hrtimer_interrupt
0.60 +0.0 0.64 perf-profile.children.cycles-pp.fsnotify_parent
0.15 ± 12% +0.0 0.19 ± 5% perf-profile.children.cycles-pp.osq_lock
0.26 ± 7% +0.0 0.30 ± 4% perf-profile.children.cycles-pp.__fdget_pos
0.06 ± 11% +0.1 0.12 ± 56% perf-profile.children.cycles-pp.queued_read_lock_slowpath
0.06 ± 6% +0.1 0.13 ± 3% perf-profile.children.cycles-pp.splice_from_pipe_next
0.00 +0.1 0.07 ± 12% perf-profile.children.cycles-pp.__fdget
0.63 ± 3% +0.1 0.70 ± 4% perf-profile.children.cycles-pp.__kmalloc_node
0.05 ± 8% +0.1 0.13 ± 3% perf-profile.children.cycles-pp.pipe_unlock
0.07 ± 10% +0.1 0.15 ± 7% perf-profile.children.cycles-pp.check_stack_object
0.94 ± 3% +0.1 1.02 ± 2% perf-profile.children.cycles-pp.fsnotify
0.06 ± 6% +0.1 0.15 ± 4% perf-profile.children.cycles-pp.pipe_lock
0.00 +0.1 0.11 ± 4% perf-profile.children.cycles-pp.wait_for_space
0.30 ± 2% +0.1 0.41 ± 4% perf-profile.children.cycles-pp.aa_file_perm
0.00 +0.1 0.11 ± 4% perf-profile.children.cycles-pp.__x64_sys_vmsplice
0.21 ± 3% +0.1 0.32 ± 3% perf-profile.children.cycles-pp.pipe_to_null
0.08 ± 5% +0.1 0.20 ± 2% perf-profile.children.cycles-pp.splice_write_null
0.09 ± 13% +0.1 0.21 ± 12% perf-profile.children.cycles-pp.get_pipe_info
0.34 ± 2% +0.1 0.46 ± 3% perf-profile.children.cycles-pp.rcu_all_qs
0.29 ± 5% +0.1 0.41 ± 2% perf-profile.children.cycles-pp.apparmor_file_permission
0.39 +0.1 0.52 perf-profile.children.cycles-pp.__x86_indirect_thunk_rax
1.20 ± 4% +0.1 1.33 ± 2% perf-profile.children.cycles-pp.copyout
0.14 ± 3% +0.1 0.27 ± 3% perf-profile.children.cycles-pp.generic_pipe_buf_confirm
0.32 ± 6% +0.2 0.47 perf-profile.children.cycles-pp.rw_verify_area
4.91 ± 2% +0.2 5.06 perf-profile.children.cycles-pp.copy_page_to_iter
0.15 ± 3% +0.2 0.33 perf-profile.children.cycles-pp.fpregs_assert_state_consistent
0.00 +0.2 0.22 ± 4% perf-profile.children.cycles-pp.add_to_pipe
0.14 ± 3% +0.2 0.36 ± 3% perf-profile.children.cycles-pp.__check_object_size
0.70 +0.2 0.93 perf-profile.children.cycles-pp._cond_resched
0.27 ± 5% +0.2 0.51 ± 3% perf-profile.children.cycles-pp.copy_user_generic_unrolled
1.02 ± 3% +0.3 1.28 ± 3% perf-profile.children.cycles-pp.mutex_unlock
0.18 ± 8% +0.3 0.45 ± 3% perf-profile.children.cycles-pp.iov_iter_advance
1.97 ± 3% +0.3 2.28 ± 2% perf-profile.children.cycles-pp.copy_user_enhanced_fast_string
0.00 +0.3 0.32 ± 3% perf-profile.children.cycles-pp.try_grab_compound_head
0.61 ± 4% +0.4 1.00 perf-profile.children.cycles-pp.__might_sleep
0.29 ± 7% +0.4 0.68 perf-profile.children.cycles-pp.__might_fault
0.69 +0.6 1.34 ± 2% perf-profile.children.cycles-pp.__fget_light
1.83 ± 13% +0.7 2.48 ± 9% perf-profile.children.cycles-pp.common_file_perm
2.10 +0.7 2.79 ± 2% perf-profile.children.cycles-pp.___might_sleep
0.39 ± 3% +0.9 1.26 ± 3% perf-profile.children.cycles-pp._copy_from_user
2.95 ± 9% +0.9 3.85 ± 5% perf-profile.children.cycles-pp.security_file_permission
1.76 ± 5% +1.1 2.87 perf-profile.children.cycles-pp.mutex_lock
1.27 ± 2% +1.2 2.50 perf-profile.children.cycles-pp.syscall_return_via_sysret
0.64 ± 2% +1.3 1.91 ± 3% perf-profile.children.cycles-pp.rw_copy_check_uvector
0.75 ± 2% +1.5 2.23 ± 3% perf-profile.children.cycles-pp.import_iovec
1.54 ± 4% +1.6 3.15 ± 2% perf-profile.children.cycles-pp.entry_SYSCALL_64
0.06 ± 9% +1.9 1.97 ± 3% perf-profile.children.cycles-pp.gup_pgd_range
24.24 +2.5 26.77 ± 3% perf-profile.children.cycles-pp.splice
6.79 -6.1 0.65 ± 5% perf-profile.self.cycles-pp.mark_page_accessed
5.48 -4.0 1.47 ± 3% perf-profile.self.cycles-pp.page_cache_pipe_buf_release
0.54 -0.2 0.35 ± 6% perf-profile.self.cycles-pp.page_cache_pipe_buf_confirm
1.32 ± 3% -0.1 1.18 ± 3% perf-profile.self.cycles-pp.xas_load
0.26 ± 3% -0.1 0.19 ± 2% perf-profile.self.cycles-pp._raw_spin_lock
0.15 ± 5% -0.1 0.09 ± 26% perf-profile.self.cycles-pp.memcpy_erms
0.78 ± 2% -0.1 0.72 ± 2% perf-profile.self.cycles-pp.sanity
0.51 ± 3% -0.0 0.46 ± 3% perf-profile.self.cycles-pp.__alloc_pages_nodemask
0.09 ± 4% -0.0 0.06 perf-profile.self.cycles-pp.get_task_policy
0.14 ± 5% +0.0 0.15 ± 3% perf-profile.self.cycles-pp.current_time
0.14 ± 7% +0.0 0.16 ± 2% perf-profile.self.cycles-pp.new_sync_write
0.05 +0.0 0.08 ± 5% perf-profile.self.cycles-pp.kill_fasync
0.24 ± 5% +0.0 0.27 ± 4% perf-profile.self.cycles-pp.update_cfs_group
0.16 ± 6% +0.0 0.19 ± 2% perf-profile.self.cycles-pp.vfs_write
0.53 ± 2% +0.0 0.56 perf-profile.self.cycles-pp.fsnotify_parent
0.15 ± 12% +0.0 0.19 ± 6% perf-profile.self.cycles-pp.osq_lock
0.21 ± 2% +0.1 0.27 ± 3% perf-profile.self.cycles-pp.__x86_indirect_thunk_rax
0.05 ± 8% +0.1 0.11 ± 4% perf-profile.self.cycles-pp.splice_from_pipe_next
0.06 ± 7% +0.1 0.12 ± 4% perf-profile.self.cycles-pp.check_stack_object
0.91 ± 3% +0.1 0.99 perf-profile.self.cycles-pp.fsnotify
0.01 ±173% +0.1 0.09 ± 11% perf-profile.self.cycles-pp.pipe_lock
0.06 ± 11% +0.1 0.14 ± 17% perf-profile.self.cycles-pp.get_pipe_info
0.25 ± 2% +0.1 0.34 ± 3% perf-profile.self.cycles-pp.rcu_all_qs
0.00 +0.1 0.09 ± 4% perf-profile.self.cycles-pp.pipe_unlock
0.00 +0.1 0.09 ± 4% perf-profile.self.cycles-pp.wait_for_space
0.10 ± 4% +0.1 0.20 ± 5% perf-profile.self.cycles-pp.__might_fault
0.28 ± 2% +0.1 0.38 ± 4% perf-profile.self.cycles-pp.aa_file_perm
0.17 ± 2% +0.1 0.27 ± 2% perf-profile.self.cycles-pp.pipe_to_null
0.00 +0.1 0.10 ± 4% perf-profile.self.cycles-pp.__x64_sys_vmsplice
0.08 ± 5% +0.1 0.18 ± 2% perf-profile.self.cycles-pp.splice_write_null
0.28 +0.1 0.38 ± 2% perf-profile.self.cycles-pp.wakeup_pipe_writers
0.32 ± 2% +0.1 0.43 ± 2% perf-profile.self.cycles-pp._cond_resched
0.27 ± 4% +0.1 0.38 ± 3% perf-profile.self.cycles-pp.apparmor_file_permission
0.26 ± 6% +0.1 0.37 ± 3% perf-profile.self.cycles-pp.wakeup_pipe_readers
0.51 ± 2% +0.1 0.63 ± 5% perf-profile.self.cycles-pp.security_file_permission
0.07 ± 6% +0.1 0.20 ± 4% perf-profile.self.cycles-pp.__check_object_size
0.08 +0.1 0.21 ± 5% perf-profile.self.cycles-pp._copy_from_user
0.29 ± 6% +0.1 0.43 perf-profile.self.cycles-pp.rw_verify_area
0.12 ± 3% +0.1 0.26 ± 4% perf-profile.self.cycles-pp.generic_pipe_buf_confirm
0.15 ± 2% +0.2 0.32 perf-profile.self.cycles-pp.fpregs_assert_state_consistent
0.11 ± 6% +0.2 0.32 ± 2% perf-profile.self.cycles-pp.import_iovec
0.00 +0.2 0.21 ± 3% perf-profile.self.cycles-pp.do_vmsplice
0.00 +0.2 0.21 ± 4% perf-profile.self.cycles-pp.add_to_pipe
3.05 ± 2% +0.2 3.27 ± 3% perf-profile.self.cycles-pp.find_get_entry
0.13 +0.2 0.35 ± 3% perf-profile.self.cycles-pp.rw_copy_check_uvector
0.26 ± 4% +0.2 0.49 ± 2% perf-profile.self.cycles-pp.copy_user_generic_unrolled
0.99 ± 3% +0.2 1.24 ± 3% perf-profile.self.cycles-pp.mutex_unlock
0.30 ± 2% +0.2 0.55 ± 4% perf-profile.self.cycles-pp.__x64_sys_splice
0.18 ± 6% +0.3 0.43 ± 3% perf-profile.self.cycles-pp.iov_iter_advance
0.00 +0.3 0.29 ± 4% perf-profile.self.cycles-pp.__do_sys_vmsplice
1.95 ± 3% +0.3 2.24 ± 2% perf-profile.self.cycles-pp.copy_user_enhanced_fast_string
0.00 +0.3 0.31 ± 3% perf-profile.self.cycles-pp.try_grab_compound_head
0.52 ± 4% +0.3 0.86 perf-profile.self.cycles-pp.__might_sleep
0.00 +0.3 0.35 ± 5% perf-profile.self.cycles-pp.iov_iter_get_pages
0.00 +0.4 0.36 ± 2% perf-profile.self.cycles-pp.internal_get_user_pages_fast
0.58 ± 2% +0.4 0.97 perf-profile.self.cycles-pp.do_syscall_64
1.06 ± 6% +0.4 1.46 ± 2% perf-profile.self.cycles-pp.mutex_lock
0.54 ± 2% +0.4 0.98 ± 5% perf-profile.self.cycles-pp.do_splice
0.42 ± 2% +0.5 0.88 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
0.67 ± 3% +0.5 1.14 ± 2% perf-profile.self.cycles-pp.splice
0.00 +0.5 0.49 ± 3% perf-profile.self.cycles-pp.iter_to_pipe
0.49 ± 3% +0.5 0.98 ± 2% perf-profile.self.cycles-pp.splice_from_pipe
1.54 ± 2% +0.5 2.04 ± 2% perf-profile.self.cycles-pp.__splice_from_pipe
0.00 +0.5 0.54 ± 3% perf-profile.self.cycles-pp.vmsplice
1.52 ± 16% +0.5 2.06 ± 11% perf-profile.self.cycles-pp.common_file_perm
0.67 +0.6 1.30 ± 2% perf-profile.self.cycles-pp.__fget_light
2.02 +0.7 2.68 ± 2% perf-profile.self.cycles-pp.___might_sleep
0.76 ± 3% +0.8 1.56 ± 2% perf-profile.self.cycles-pp.entry_SYSCALL_64
1.26 ± 2% +1.2 2.48 perf-profile.self.cycles-pp.syscall_return_via_sysret
0.05 ± 8% +1.5 1.58 ± 3% perf-profile.self.cycles-pp.gup_pgd_range
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,
Rong Chen
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