Greeting, FYI, we noticed a -100.0% regression of stress-ng.splice.ops_per_sec due to commit: commit: 140402bab86b6c4c8c01e5a0e2015bcd96ddb072 ("[PATCH 13/14] fs: implement default_file_splice_read using __kernel_read") url: https://github.com/0day-ci/linux/commits/Christoph-Hellwig/cachefiles-switch-to-kernel_write/20200625-011606 in testcase: stress-ng on test machine: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 256G memory with following parameters: nr_threads: 100% disk: 1HDD testtime: 30s class: pipe cpufreq_governor: performance ucode: 0x5002f01 If you fix the issue, kindly add following tag Reported-by: kernel test robot 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-2sp6/stress-ng/30s/0x5002f01 commit: 169690acd1 ("fs: remove __vfs_read") 140402bab8 ("fs: implement default_file_splice_read using __kernel_read") 169690acd1ebc195 140402bab86b6c4c8c01e5a0e20 ---------------- --------------------------- %stddev %change %stddev \ | \ 1.89e+09 -100.0% 0.00 stress-ng.splice.ops 62985321 -100.0% 0.00 stress-ng.splice.ops_per_sec 9102 -15.0% 7737 stress-ng.time.percent_of_cpu_this_job_got 17147 -15.2% 14544 stress-ng.time.system_time 2043 -13.5% 1767 ± 2% stress-ng.time.user_time 5.49 +14.2 19.74 mpstat.cpu.all.idle% 84.45 -12.9 71.56 mpstat.cpu.all.sys% 10.06 -1.4 8.70 ± 2% mpstat.cpu.all.usr% 8516257 -9.0% 7747908 sched_debug.cfs_rq:/.min_vruntime.avg 7791989 -8.0% 7166208 sched_debug.cfs_rq:/.min_vruntime.min 8.72 ± 14% -25.3% 6.52 ± 11% sched_debug.cfs_rq:/.nr_spread_over.stddev 6.00 +233.3% 20.00 vmstat.cpu.id 83.00 -15.1% 70.50 vmstat.cpu.sy 9.25 ± 4% -13.5% 8.00 vmstat.cpu.us 1.254e+09 -76.7% 2.928e+08 ± 10% numa-numastat.node0.local_node 1.254e+09 -76.7% 2.928e+08 ± 10% numa-numastat.node0.numa_hit 1.258e+09 -73.9% 3.281e+08 ± 14% numa-numastat.node1.local_node 1.258e+09 -73.9% 3.281e+08 ± 14% numa-numastat.node1.numa_hit 5.315e+08 -71.6% 1.511e+08 ± 16% numa-vmstat.node0.numa_hit 5.314e+08 -71.6% 1.51e+08 ± 16% numa-vmstat.node0.numa_local 5.333e+08 ± 2% -66.1% 1.808e+08 ± 20% numa-vmstat.node1.numa_hit 5.332e+08 ± 2% -66.1% 1.807e+08 ± 20% numa-vmstat.node1.numa_local 2.512e+09 -75.3% 6.209e+08 ± 2% proc-vmstat.numa_hit 2.512e+09 -75.3% 6.209e+08 ± 2% proc-vmstat.numa_local 2.513e+09 -75.3% 6.211e+08 ± 2% proc-vmstat.pgalloc_normal 2.513e+09 -75.3% 6.21e+08 ± 2% proc-vmstat.pgfree 11043 ± 6% +37.1% 15145 ± 17% interrupts.CPU16.RES:Rescheduling_interrupts 10433 ± 9% +90.8% 19904 ± 34% interrupts.CPU19.RES:Rescheduling_interrupts 10912 ± 7% +35.6% 14793 ± 18% interrupts.CPU20.RES:Rescheduling_interrupts 10149 ± 10% +89.2% 19199 ± 46% interrupts.CPU21.RES:Rescheduling_interrupts 25107 ± 39% -57.2% 10736 ± 7% interrupts.CPU41.RES:Rescheduling_interrupts 10090 ± 3% +35.8% 13704 ± 22% interrupts.CPU50.RES:Rescheduling_interrupts 6.36 +220.4% 20.38 iostat.cpu.idle 83.67 -15.2% 70.98 iostat.cpu.system 9.97 -13.3% 8.64 ± 2% iostat.cpu.user 3.18 ±100% -100.0% 0.00 iostat.sdb.await.max 3.18 ±100% -100.0% 0.00 iostat.sdb.r_await.max 2.00 ±100% -100.0% 0.00 iostat.sdb.svctm.max 1.15 ± 18% -0.6 0.55 ± 65% perf-profile.calltrace.cycles-pp.secondary_startup_64 1.13 ± 18% -0.6 0.54 ± 65% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64 1.13 ± 18% -0.6 0.54 ± 65% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64 1.12 ± 18% -0.6 0.54 ± 65% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 11.24 -0.3 10.94 perf-profile.calltrace.cycles-pp.do_select.core_sys_select.kern_select.__x64_sys_select.do_syscall_64 0.86 ± 5% +0.1 0.93 ± 5% perf-profile.calltrace.cycles-pp.common_file_perm.security_file_permission.vfs_read.ksys_read.do_syscall_64 1.20 ± 7% +0.2 1.35 ± 8% perf-profile.calltrace.cycles-pp.ktime_get_ts64.poll_select_finish.kern_select.__x64_sys_select.do_syscall_64 1.27 ± 27% -0.6 0.70 ± 49% perf-profile.children.cycles-pp._raw_spin_lock 1.15 ± 18% -0.5 0.62 ± 42% perf-profile.children.cycles-pp.secondary_startup_64 1.15 ± 18% -0.5 0.62 ± 42% perf-profile.children.cycles-pp.cpu_startup_entry 1.13 ± 18% -0.5 0.61 ± 42% perf-profile.children.cycles-pp.start_secondary 1.14 ± 18% -0.5 0.62 ± 41% perf-profile.children.cycles-pp.do_idle 2.79 ± 8% -0.3 2.47 ± 3% perf-profile.children.cycles-pp.__schedule 0.64 ± 23% -0.3 0.34 ± 46% perf-profile.children.cycles-pp.schedule_idle 11.35 -0.3 11.06 perf-profile.children.cycles-pp.do_select 0.42 ± 17% -0.2 0.22 ± 40% perf-profile.children.cycles-pp.cpuidle_enter 0.42 ± 17% -0.2 0.22 ± 40% perf-profile.children.cycles-pp.cpuidle_enter_state 0.36 ± 19% -0.2 0.19 ± 43% perf-profile.children.cycles-pp.intel_idle 0.51 ± 19% -0.2 0.35 ± 25% perf-profile.children.cycles-pp.__mutex_lock 0.19 ± 5% +0.0 0.22 ± 6% perf-profile.children.cycles-pp.memset 0.16 ± 4% +0.0 0.19 ± 3% perf-profile.children.cycles-pp.__x64_sys_write 0.34 ± 6% +0.0 0.38 ± 5% perf-profile.children.cycles-pp.aa_file_perm 2.83 ± 6% +0.3 3.17 ± 7% perf-profile.children.cycles-pp.memset_erms 3.74 ± 8% +0.5 4.27 ± 8% perf-profile.children.cycles-pp.ktime_get_ts64 0.36 ± 19% -0.2 0.19 ± 43% perf-profile.self.cycles-pp.intel_idle 0.15 ± 4% +0.0 0.17 ± 4% perf-profile.self.cycles-pp.__x64_sys_write 0.18 ± 5% +0.0 0.21 ± 8% perf-profile.self.cycles-pp._copy_to_user 0.31 ± 6% +0.0 0.34 ± 5% perf-profile.self.cycles-pp.aa_file_perm 0.30 ± 5% +0.0 0.33 ± 5% perf-profile.self.cycles-pp.ksys_write 0.64 ± 6% +0.1 0.72 ± 8% perf-profile.self.cycles-pp.new_sync_write 0.93 ± 6% +0.1 1.04 ± 10% perf-profile.self.cycles-pp.__select 2.74 ± 6% +0.3 3.06 ± 7% perf-profile.self.cycles-pp.memset_erms 7.73 +77.8% 13.74 ± 53% perf-stat.i.MPKI 4.185e+10 -15.3% 3.546e+10 perf-stat.i.branch-instructions 0.66 +0.5 1.19 ± 56% perf-stat.i.branch-miss-rate% 2.242e+08 -19.5% 1.804e+08 perf-stat.i.branch-misses 10.61 ± 16% -2.2 8.40 ± 11% perf-stat.i.cache-miss-rate% 1.71 +31.9% 2.25 ± 14% perf-stat.i.cpi 2.363e+11 -14.0% 2.032e+11 perf-stat.i.cpu-cycles 5.255e+10 -18.9% 4.26e+10 perf-stat.i.dTLB-loads 3.183e+10 -18.9% 2.58e+10 perf-stat.i.dTLB-stores 91.58 -5.8 85.80 ± 2% perf-stat.i.iTLB-load-miss-rate% 1.693e+08 ± 4% -26.3% 1.247e+08 perf-stat.i.iTLB-load-misses 2.033e+11 -16.9% 1.69e+11 perf-stat.i.instructions 0.85 -13.0% 0.74 perf-stat.i.ipc 2.46 -14.0% 2.12 perf-stat.i.metric.GHz 0.69 ± 3% +11.4% 0.77 ± 4% perf-stat.i.metric.K/sec 1320 -17.7% 1087 perf-stat.i.metric.M/sec 84.92 -1.5 83.37 perf-stat.i.node-load-miss-rate% 5508205 ± 10% -12.3% 4829049 ± 7% perf-stat.i.node-load-misses 88.44 -1.8 86.60 perf-stat.i.node-store-miss-rate% 2.74 +19.7% 3.28 ± 2% perf-stat.overall.MPKI 0.54 -0.0 0.51 perf-stat.overall.branch-miss-rate% 1.17 +3.6% 1.21 perf-stat.overall.cpi 94.99 -1.6 93.40 perf-stat.overall.iTLB-load-miss-rate% 1198 ± 4% +12.1% 1343 perf-stat.overall.instructions-per-iTLB-miss 0.85 -3.5% 0.82 perf-stat.overall.ipc 76.33 -2.1 74.22 perf-stat.overall.node-store-miss-rate% 4.138e+10 -15.2% 3.51e+10 perf-stat.ps.branch-instructions 2.225e+08 -19.2% 1.798e+08 perf-stat.ps.branch-misses 2.354e+11 -13.7% 2.031e+11 perf-stat.ps.cpu-cycles 5.2e+10 -18.8% 4.225e+10 perf-stat.ps.dTLB-loads 3.148e+10 -18.8% 2.557e+10 perf-stat.ps.dTLB-stores 1.681e+08 ± 4% -25.9% 1.246e+08 perf-stat.ps.iTLB-load-misses 2.01e+11 -16.7% 1.674e+11 perf-stat.ps.instructions 5501189 ± 10% -12.1% 4834197 ± 7% perf-stat.ps.node-load-misses 4.253e+13 -16.5% 3.549e+13 perf-stat.total.instructions 12584 +22.9% 15464 ± 4% softirqs.CPU0.RCU 24160 ± 3% +16.8% 28229 ± 4% softirqs.CPU0.SCHED 12597 ± 3% +15.3% 14523 ± 6% softirqs.CPU1.RCU 22519 ± 2% +17.8% 26528 softirqs.CPU1.SCHED 11499 ± 2% +25.3% 14408 ± 4% softirqs.CPU10.RCU 22544 ± 2% +14.7% 25856 ± 3% softirqs.CPU10.SCHED 11857 ± 4% +18.4% 14035 ± 4% softirqs.CPU11.RCU 22508 ± 4% +13.3% 25509 softirqs.CPU11.SCHED 11755 ± 3% +20.4% 14150 ± 3% softirqs.CPU12.RCU 22168 ± 2% +15.5% 25610 softirqs.CPU12.SCHED 11532 ± 2% +20.7% 13919 ± 3% softirqs.CPU13.RCU 22433 ± 2% +12.5% 25236 ± 2% softirqs.CPU13.SCHED 11692 ± 4% +20.5% 14094 ± 3% softirqs.CPU14.RCU 21907 ± 2% +16.2% 25460 ± 2% softirqs.CPU14.SCHED 11584 ± 3% +21.1% 14029 ± 3% softirqs.CPU15.RCU 22116 +15.1% 25446 softirqs.CPU15.SCHED 12117 ± 4% +18.5% 14353 ± 4% softirqs.CPU16.RCU 21918 +18.2% 25904 ± 4% softirqs.CPU16.SCHED 12337 ± 7% +19.7% 14768 ± 3% softirqs.CPU17.RCU 21922 ± 3% +19.1% 26107 ± 2% softirqs.CPU17.SCHED 12117 ± 3% +19.5% 14486 ± 3% softirqs.CPU18.RCU 22208 ± 2% +15.2% 25586 ± 2% softirqs.CPU18.SCHED 12123 ± 6% +18.9% 14413 ± 3% softirqs.CPU19.RCU 21757 +16.8% 25405 ± 2% softirqs.CPU19.SCHED 11831 ± 6% +21.1% 14326 ± 3% softirqs.CPU2.RCU 22280 ± 3% +16.3% 25912 softirqs.CPU2.SCHED 12069 ± 3% +19.7% 14449 ± 3% softirqs.CPU20.RCU 22370 +14.0% 25505 ± 2% softirqs.CPU20.SCHED 12133 ± 4% +21.1% 14689 ± 5% softirqs.CPU21.RCU 21765 ± 2% +16.4% 25326 ± 3% softirqs.CPU21.SCHED 12077 ± 4% +20.8% 14584 ± 3% softirqs.CPU22.RCU 22162 ± 3% +11.5% 24706 ± 2% softirqs.CPU22.SCHED 11955 ± 3% +21.8% 14565 ± 3% softirqs.CPU23.RCU 21916 ± 2% +15.5% 25307 softirqs.CPU23.SCHED 12312 ± 3% +19.6% 14720 ± 4% softirqs.CPU24.RCU 12236 ± 3% +18.6% 14517 ± 3% softirqs.CPU25.RCU 12395 ± 5% +16.4% 14426 ± 3% softirqs.CPU26.RCU 12922 ± 15% +29.0% 16669 ± 13% softirqs.CPU27.RCU 11799 ± 2% +19.8% 14135 softirqs.CPU29.RCU 20734 ± 3% +16.6% 24174 ± 6% softirqs.CPU29.SCHED 12194 ± 7% +19.2% 14530 ± 4% softirqs.CPU3.RCU 21830 +16.2% 25361 ± 2% softirqs.CPU3.SCHED 11896 ± 2% +20.7% 14364 ± 2% softirqs.CPU30.RCU 11626 ± 2% +25.0% 14534 ± 2% softirqs.CPU31.RCU 11544 ± 2% +20.4% 13902 ± 2% softirqs.CPU32.RCU 11774 ± 4% +21.2% 14266 softirqs.CPU33.RCU 11779 ± 3% +20.1% 14147 softirqs.CPU34.RCU 21020 +12.3% 23615 ± 6% softirqs.CPU34.SCHED 11503 ± 2% +22.5% 14088 ± 2% softirqs.CPU35.RCU 11414 ± 3% +22.8% 14016 softirqs.CPU36.RCU 11400 ± 3% +22.7% 13982 ± 2% softirqs.CPU37.RCU 11505 ± 3% +23.8% 14242 ± 2% softirqs.CPU38.RCU 11547 ± 3% +21.8% 14069 ± 3% softirqs.CPU39.RCU 11800 +19.1% 14055 ± 3% softirqs.CPU4.RCU 22611 ± 3% +12.9% 25530 ± 2% softirqs.CPU4.SCHED 11467 ± 2% +23.6% 14171 ± 2% softirqs.CPU40.RCU 11521 ± 2% +22.7% 14131 softirqs.CPU41.RCU 11375 ± 2% +22.5% 13935 ± 3% softirqs.CPU42.RCU 11383 ± 2% +23.1% 14009 softirqs.CPU43.RCU 11315 ± 3% +22.2% 13828 ± 2% softirqs.CPU44.RCU 11340 ± 2% +24.9% 14166 ± 2% softirqs.CPU45.RCU 11478 ± 2% +22.5% 14060 softirqs.CPU46.RCU 20831 +14.1% 23759 ± 6% softirqs.CPU46.SCHED 11438 ± 2% +22.9% 14059 softirqs.CPU47.RCU 20926 +15.9% 24244 ± 6% softirqs.CPU47.SCHED 11478 +20.8% 13863 ± 3% softirqs.CPU48.RCU 21682 ± 3% +17.6% 25488 ± 2% softirqs.CPU48.SCHED 11517 ± 3% +18.9% 13695 ± 2% softirqs.CPU49.RCU 21961 ± 2% +17.6% 25832 ± 3% softirqs.CPU49.SCHED 22045 ± 3% +15.0% 25359 ± 2% softirqs.CPU5.SCHED 11718 ± 5% +21.0% 14175 ± 7% softirqs.CPU50.RCU 22354 ± 3% +16.5% 26036 ± 3% softirqs.CPU50.SCHED 11368 ± 3% +18.6% 13487 ± 5% softirqs.CPU51.RCU 22012 ± 3% +17.0% 25752 ± 2% softirqs.CPU51.SCHED 11263 ± 2% +22.8% 13825 ± 4% softirqs.CPU52.RCU 21846 ± 2% +18.2% 25823 ± 3% softirqs.CPU52.SCHED 11630 ± 2% +18.7% 13811 ± 5% softirqs.CPU53.RCU 22115 +15.7% 25589 ± 2% softirqs.CPU53.SCHED 11435 ± 3% +20.9% 13825 ± 3% softirqs.CPU54.RCU 21666 +17.3% 25408 softirqs.CPU54.SCHED 11341 ± 2% +21.6% 13794 ± 3% softirqs.CPU55.RCU 21801 ± 2% +17.8% 25674 ± 2% softirqs.CPU55.SCHED 11352 ± 3% +20.8% 13716 ± 3% softirqs.CPU56.RCU 21613 ± 3% +15.4% 24952 ± 4% softirqs.CPU56.SCHED 11385 ± 3% +21.2% 13795 ± 3% softirqs.CPU57.RCU 22139 ± 2% +16.6% 25819 ± 3% softirqs.CPU57.SCHED 11338 ± 3% +21.0% 13719 ± 3% softirqs.CPU58.RCU 22006 +16.3% 25600 ± 2% softirqs.CPU58.SCHED 11382 ± 2% +20.7% 13737 ± 3% softirqs.CPU59.RCU 22231 ± 2% +15.4% 25664 softirqs.CPU59.SCHED 11729 +23.1% 14443 ± 5% softirqs.CPU6.RCU 22023 ± 3% +14.2% 25145 ± 4% softirqs.CPU6.SCHED 11450 ± 2% +21.9% 13961 ± 2% softirqs.CPU60.RCU 22174 ± 4% +15.7% 25653 ± 2% softirqs.CPU60.SCHED 11297 ± 2% +22.6% 13848 ± 2% softirqs.CPU61.RCU 21550 ± 2% +15.6% 24909 ± 2% softirqs.CPU61.SCHED 11232 ± 2% +21.3% 13620 ± 3% softirqs.CPU62.RCU 22190 +15.2% 25560 ± 2% softirqs.CPU62.SCHED 11528 ± 2% +19.8% 13810 ± 2% softirqs.CPU63.RCU 22068 +17.2% 25860 ± 2% softirqs.CPU63.SCHED 11793 ± 4% +20.9% 14262 ± 3% softirqs.CPU64.RCU 22102 +16.1% 25660 ± 2% softirqs.CPU64.SCHED 12067 ± 4% +18.0% 14244 ± 4% softirqs.CPU65.RCU 22085 ± 2% +15.5% 25515 softirqs.CPU65.SCHED 11878 ± 3% +21.8% 14471 ± 4% softirqs.CPU66.RCU 21855 ± 2% +13.2% 24746 ± 4% softirqs.CPU66.SCHED 11723 ± 3% +23.1% 14435 ± 5% softirqs.CPU67.RCU 22581 ± 8% +13.1% 25541 softirqs.CPU67.SCHED 11796 ± 2% +22.1% 14406 ± 4% softirqs.CPU68.RCU 22195 ± 3% +14.6% 25435 softirqs.CPU68.SCHED 11690 ± 3% +22.6% 14337 ± 3% softirqs.CPU69.RCU 21531 ± 2% +20.6% 25957 ± 2% softirqs.CPU69.SCHED 11562 ± 3% +21.2% 14014 ± 5% softirqs.CPU7.RCU 22170 +14.6% 25414 ± 2% softirqs.CPU7.SCHED 11710 ± 3% +21.8% 14263 ± 3% softirqs.CPU70.RCU 22245 ± 3% +15.0% 25578 ± 3% softirqs.CPU70.SCHED 11991 ± 3% +18.7% 14238 ± 4% softirqs.CPU71.RCU 22094 ± 2% +15.1% 25431 ± 2% softirqs.CPU71.SCHED 12079 ± 3% +18.4% 14299 ± 6% softirqs.CPU72.RCU 11760 ± 3% +23.7% 14550 ± 4% softirqs.CPU73.RCU 21025 ± 2% +16.8% 24556 ± 7% softirqs.CPU73.SCHED 11820 ± 5% +21.1% 14317 ± 3% softirqs.CPU74.RCU 11770 ± 4% +18.7% 13975 ± 2% softirqs.CPU75.RCU 11306 ± 5% +23.7% 13982 ± 3% softirqs.CPU76.RCU 11588 ± 3% +20.9% 14008 softirqs.CPU77.RCU 11372 ± 2% +22.8% 13962 ± 2% softirqs.CPU78.RCU 11721 ± 4% +19.9% 14048 ± 4% softirqs.CPU8.RCU 22272 +12.5% 25048 ± 4% softirqs.CPU8.SCHED 11230 ± 2% +24.0% 13931 softirqs.CPU80.RCU 11404 ± 2% +20.3% 13725 ± 2% softirqs.CPU81.RCU 20985 ± 2% +14.8% 24100 ± 6% softirqs.CPU81.SCHED 11173 ± 2% +24.2% 13878 softirqs.CPU82.RCU 20795 ± 2% +17.4% 24408 ± 7% softirqs.CPU82.SCHED 11254 +22.7% 13814 softirqs.CPU83.RCU 20744 +15.7% 23992 ± 7% softirqs.CPU83.SCHED 11314 +21.1% 13696 ± 4% softirqs.CPU84.RCU 11319 ± 2% +23.3% 13960 softirqs.CPU85.RCU 11200 ± 2% +23.7% 13854 softirqs.CPU86.RCU 11360 ± 3% +20.2% 13652 softirqs.CPU87.RCU 11165 ± 2% +24.5% 13898 softirqs.CPU88.RCU 20965 +16.0% 24319 ± 6% softirqs.CPU88.SCHED 11149 ± 3% +24.2% 13843 softirqs.CPU89.RCU 11613 ± 2% +20.0% 13930 ± 2% softirqs.CPU9.RCU 22729 ± 5% +12.4% 25545 ± 2% softirqs.CPU9.SCHED 11302 +21.1% 13684 ± 3% softirqs.CPU90.RCU 11494 ± 4% +20.0% 13790 ± 2% softirqs.CPU91.RCU 11146 ± 2% +23.1% 13722 softirqs.CPU92.RCU 11099 ± 2% +23.4% 13693 softirqs.CPU93.RCU 11066 ± 2% +26.2% 13965 ± 2% softirqs.CPU94.RCU 20905 ± 2% +15.4% 24117 ± 6% softirqs.CPU94.SCHED 11386 ± 2% +22.6% 13963 ± 2% softirqs.CPU95.RCU 21251 ± 4% +14.4% 24302 ± 6% softirqs.CPU95.SCHED 1121124 ± 2% +21.2% 1359235 ± 2% softirqs.RCU 2068395 +15.2% 2382084 ± 4% softirqs.SCHED stress-ng.time.system_time 17500 +-------------------------------------------------------------------+ |.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.| 17000 |-+ | 16500 |-+ | | | 16000 |-+ | 15500 |-+ | | | 15000 |-+ | 14500 |-+ O O O O O O O O O O O O O O O O O O O | | | 14000 |-+ | 13500 |-+ | | | 13000 +-------------------------------------------------------------------+ stress-ng.time.percent_of_cpu_this_job_got 9200 +--------------------------------------------------------------------+ |.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+..+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.| 9000 |-+ | 8800 |-+ | | | 8600 |-+ | | | 8400 |-+ | | | 8200 |-+ | 8000 |-+ | | | 7800 |-+ | | O O O O O O O O O O O O O O O O O O O O | 7600 +--------------------------------------------------------------------+ stress-ng.splice.ops 1.94e+09 +----------------------------------------------------------------+ | : | 1.93e+09 |-+ : | 1.92e+09 |-+ :: | | + :: | 1.91e+09 |-+ : + + + :: :| 1.9e+09 |-+ : : : + :: :+ .+.+. .+. : : :| | : +.+ : : :: : :: + + +. .+ : : :| 1.89e+09 |-+ : : : : : : : + + :: : :| 1.88e+09 |:+: +.+ : : : : + :: : +. : | |: : + : : : +.: + : : +.: | 1.87e+09 |-+ + +.+ :: + : : + | 1.86e+09 |-+ :: +. : | | + + | 1.85e+09 +----------------------------------------------------------------+ stress-ng.splice.ops_per_sec 6.5e+07 +----------------------------------------------------------------+ | | 6.45e+07 |-+ + | | : | 6.4e+07 |-+ + : | | : :: | 6.35e+07 |-+ : : + + + +. :: :| | : :.+ : :: : + : +.+.+.+.+.+. : : :| 6.3e+07 |-+ : + : : : : : : + +.+ : : :| |: : +.+ : : : : + +: : +. :| 6.25e+07 |:+: + +.+ : +.: + : : +.: | | + :+ + : : + | 6.2e+07 |-+ + +. : | | + | 6.15e+07 +----------------------------------------------------------------+ [*] 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, Rong Chen