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Date: Mon, 25 Dec 2017 14:07:09 +0800 From: kernel test robot <xiaolong.ye@...el.com> To: Vincent Guittot <vincent.guittot@...aro.org> Cc: Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Ben Segall <bsegall@...gle.com>, Chris Mason <clm@...com>, Dietmar Eggemann <dietmar.eggemann@....com>, Josef Bacik <josef@...icpanda.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Mike Galbraith <efault@....de>, Morten Rasmussen <morten.rasmussen@....com>, Paul Turner <pjt@...gle.com>, Tejun Heo <tj@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Yuyang Du <yuyang.du@...el.com>, LKML <linux-kernel@...r.kernel.org>, lkp@...org Subject: [lkp-robot] [sched/fair] a4c3c04974: unixbench.score -4.3% regression Greeting, FYI, we noticed a -4.3% regression of unixbench.score due to commit: commit: a4c3c04974d648ee6e1a09ef4131eb32a02ab494 ("sched/fair: Update and fix the runnable propagation rule") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: unixbench on test machine: 8 threads Ivy Bridge with 16G memory with following parameters: runtime: 300s nr_task: 100% test: shell1 cpufreq_governor: performance test-description: UnixBench is the original BYTE UNIX benchmark suite aims to test performance of Unix-like system. test-url: https://github.com/kdlucas/byte-unixbench 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 ========================================================================================= compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase: gcc-7/performance/x86_64-rhel-7.2/100%/debian-x86_64-2016-08-31.cgz/300s/lkp-ivb-d01/shell1/unixbench commit: c6b9d9a330 ("sched/wait: Fix add_wait_queue() behavioral change") a4c3c04974 ("sched/fair: Update and fix the runnable propagation rule") c6b9d9a330290144 a4c3c04974d648ee6e1a09ef41 ---------------- -------------------------- %stddev %change %stddev \ | \ 13264 -4.3% 12694 unixbench.score 10619292 -11.7% 9374917 unixbench.time.involuntary_context_switches 4.829e+08 -4.3% 4.62e+08 unixbench.time.minor_page_faults 1126 -3.6% 1086 unixbench.time.system_time 2645 -3.0% 2566 unixbench.time.user_time 15855720 -6.2% 14878247 unixbench.time.voluntary_context_switches 0.00 ± 56% -0.0 0.00 ± 57% mpstat.cpu.iowait% 79517 -5.7% 74990 vmstat.system.cs 16361 -3.3% 15822 vmstat.system.in 1.814e+08 -24.0% 1.379e+08 cpuidle.C1.time 3436399 -20.6% 2728227 cpuidle.C1.usage 7772815 -9.9% 7001076 cpuidle.C1E.usage 1.479e+08 +66.1% 2.456e+08 cpuidle.C3.time 1437889 +38.7% 1994073 cpuidle.C3.usage 18147 +13.9% 20676 cpuidle.POLL.usage 3436173 -20.6% 2727580 turbostat.C1 3.54 -0.8 2.73 turbostat.C1% 7772758 -9.9% 7001012 turbostat.C1E 1437858 +38.7% 1994034 turbostat.C3 2.88 +2.0 4.86 turbostat.C3% 18.50 +10.8% 20.50 turbostat.CPU%c1 0.54 ± 2% +179.6% 1.51 turbostat.CPU%c3 2.32e+12 -4.3% 2.22e+12 perf-stat.branch-instructions 6.126e+10 -4.9% 5.823e+10 perf-stat.branch-misses 8.64 ± 4% +0.6 9.25 perf-stat.cache-miss-rate% 1.662e+11 -4.3% 1.59e+11 perf-stat.cache-references 51040611 -7.0% 47473754 perf-stat.context-switches 1.416e+13 -3.6% 1.365e+13 perf-stat.cpu-cycles 8396968 -3.9% 8065835 perf-stat.cpu-migrations 2.919e+12 -4.3% 2.793e+12 perf-stat.dTLB-loads 1.89e+12 -4.3% 1.809e+12 perf-stat.dTLB-stores 67.97 +1.1 69.03 perf-stat.iTLB-load-miss-rate% 4.767e+09 -1.3% 4.704e+09 perf-stat.iTLB-load-misses 2.247e+09 -6.0% 2.111e+09 perf-stat.iTLB-loads 1.14e+13 -4.3% 1.091e+13 perf-stat.instructions 2391 -3.0% 2319 perf-stat.instructions-per-iTLB-miss 4.726e+08 -4.3% 4.523e+08 perf-stat.minor-faults 4.726e+08 -4.3% 4.523e+08 perf-stat.page-faults 585.14 ± 4% -55.0% 263.59 ± 12% sched_debug.cfs_rq:/.load_avg.avg 1470 ± 4% -42.2% 850.09 ± 24% sched_debug.cfs_rq:/.load_avg.max 154.17 ± 22% -49.2% 78.39 ± 7% sched_debug.cfs_rq:/.load_avg.min 438.33 ± 6% -41.9% 254.49 ± 27% sched_debug.cfs_rq:/.load_avg.stddev 2540 ± 15% +23.5% 3137 ± 11% sched_debug.cfs_rq:/.removed.runnable_sum.avg 181.83 ± 11% -56.3% 79.50 ± 34% sched_debug.cfs_rq:/.runnable_load_avg.avg 16.46 ± 37% -72.9% 4.45 ±110% sched_debug.cfs_rq:/.runnable_load_avg.min 294.77 ± 5% +11.2% 327.87 ± 6% sched_debug.cfs_rq:/.util_avg.stddev 220260 ± 8% +20.3% 264870 ± 4% sched_debug.cpu.avg_idle.avg 502903 ± 4% +21.0% 608663 sched_debug.cpu.avg_idle.max 148667 ± 6% +29.5% 192468 ± 2% sched_debug.cpu.avg_idle.stddev 180.64 ± 10% -53.4% 84.23 ± 34% sched_debug.cpu.cpu_load[0].avg 25.73 ± 15% -85.6% 3.70 ±113% sched_debug.cpu.cpu_load[0].min 176.98 ± 6% -52.5% 84.06 ± 35% sched_debug.cpu.cpu_load[1].avg 53.93 ± 13% -72.6% 14.75 ± 15% sched_debug.cpu.cpu_load[1].min 176.61 ± 4% -55.3% 78.92 ± 31% sched_debug.cpu.cpu_load[2].avg 73.78 ± 11% -73.4% 19.61 ± 7% sched_debug.cpu.cpu_load[2].min 177.42 ± 3% -58.8% 73.09 ± 21% sched_debug.cpu.cpu_load[3].avg 93.01 ± 8% -73.9% 24.25 ± 6% sched_debug.cpu.cpu_load[3].min 173.36 ± 3% -60.6% 68.26 ± 13% sched_debug.cpu.cpu_load[4].avg 274.36 ± 5% -48.6% 141.16 ± 44% sched_debug.cpu.cpu_load[4].max 107.87 ± 6% -73.0% 29.11 ± 9% sched_debug.cpu.cpu_load[4].min 11203 ± 9% +9.9% 12314 ± 6% sched_debug.cpu.curr->pid.avg 1042556 ± 3% -6.9% 970165 ± 2% sched_debug.cpu.sched_goidle.max 748905 ± 5% -13.4% 648459 sched_debug.cpu.sched_goidle.min 90872 ± 11% +17.4% 106717 ± 5% sched_debug.cpu.sched_goidle.stddev 457847 ± 4% -15.0% 389113 sched_debug.cpu.ttwu_local.min 18.60 -1.1 17.45 perf-profile.calltrace.cycles-pp.secondary_startup_64 16.33 ± 2% -1.0 15.29 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64 16.33 ± 2% -1.0 15.29 perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64 16.32 ± 2% -1.0 15.29 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 15.44 ± 2% -1.0 14.43 perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 15.69 ± 2% -1.0 14.71 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 5.54 -0.1 5.45 perf-profile.calltrace.cycles-pp.__libc_fork 10.28 +0.0 10.32 perf-profile.calltrace.cycles-pp.page_fault 10.16 +0.0 10.21 perf-profile.calltrace.cycles-pp.do_page_fault.page_fault 10.15 +0.1 10.20 perf-profile.calltrace.cycles-pp.__do_page_fault.do_page_fault.page_fault 9.47 +0.1 9.56 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 11.49 +0.1 11.59 perf-profile.calltrace.cycles-pp.sys_execve.do_syscall_64.return_from_SYSCALL_64.execve 8.28 +0.1 8.38 perf-profile.calltrace.cycles-pp.load_elf_binary.search_binary_handler.do_execveat_common.sys_execve.do_syscall_64 11.49 +0.1 11.59 perf-profile.calltrace.cycles-pp.return_from_SYSCALL_64.execve 11.49 +0.1 11.59 perf-profile.calltrace.cycles-pp.do_syscall_64.return_from_SYSCALL_64.execve 8.30 +0.1 8.41 perf-profile.calltrace.cycles-pp.search_binary_handler.do_execveat_common.sys_execve.do_syscall_64.return_from_SYSCALL_64 11.46 +0.1 11.58 perf-profile.calltrace.cycles-pp.do_execveat_common.sys_execve.do_syscall_64.return_from_SYSCALL_64.execve 8.46 +0.1 8.57 perf-profile.calltrace.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 5.21 +0.1 5.34 ± 2% perf-profile.calltrace.cycles-pp.exit_mmap.mmput.do_exit.do_group_exit.__wake_up_parent 5.24 +0.1 5.38 ± 2% perf-profile.calltrace.cycles-pp.mmput.do_exit.do_group_exit.__wake_up_parent.entry_SYSCALL_64_fastpath 13.20 +0.1 13.34 perf-profile.calltrace.cycles-pp.execve 6.79 +0.2 6.94 ± 2% perf-profile.calltrace.cycles-pp.__wake_up_parent.entry_SYSCALL_64_fastpath 6.79 +0.2 6.95 ± 2% perf-profile.calltrace.cycles-pp.do_group_exit.__wake_up_parent.entry_SYSCALL_64_fastpath 6.78 +0.2 6.94 perf-profile.calltrace.cycles-pp.do_exit.do_group_exit.__wake_up_parent.entry_SYSCALL_64_fastpath 5.98 +0.2 6.18 perf-profile.calltrace.cycles-pp.vfprintf.__vsnprintf_chk 8.38 +0.2 8.61 perf-profile.calltrace.cycles-pp.__vsnprintf_chk 14.17 +0.3 14.49 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_fastpath 18.60 -1.1 17.45 perf-profile.children.cycles-pp.do_idle 18.60 -1.1 17.45 perf-profile.children.cycles-pp.cpu_startup_entry 18.60 -1.1 17.45 perf-profile.children.cycles-pp.secondary_startup_64 17.60 -1.1 16.46 perf-profile.children.cycles-pp.intel_idle 17.89 -1.1 16.80 perf-profile.children.cycles-pp.cpuidle_enter_state 16.33 ± 2% -1.0 15.29 perf-profile.children.cycles-pp.start_secondary 5.54 -0.1 5.45 perf-profile.children.cycles-pp.__libc_fork 16.15 +0.0 16.18 perf-profile.children.cycles-pp.do_page_fault 16.19 +0.0 16.22 perf-profile.children.cycles-pp.page_fault 6.24 +0.1 6.29 ± 2% perf-profile.children.cycles-pp.filemap_map_pages 16.07 +0.1 16.13 perf-profile.children.cycles-pp.__do_page_fault 16.85 +0.1 16.92 perf-profile.children.cycles-pp.do_syscall_64 16.85 +0.1 16.92 perf-profile.children.cycles-pp.return_from_SYSCALL_64 9.22 +0.1 9.33 perf-profile.children.cycles-pp.search_binary_handler 13.49 +0.1 13.61 perf-profile.children.cycles-pp.__handle_mm_fault 4.89 +0.1 5.02 ± 2% perf-profile.children.cycles-pp.unmap_page_range 9.11 +0.1 9.24 perf-profile.children.cycles-pp.load_elf_binary 13.20 +0.1 13.34 perf-profile.children.cycles-pp.execve 12.82 +0.1 12.96 perf-profile.children.cycles-pp.sys_execve 4.95 +0.2 5.10 ± 2% perf-profile.children.cycles-pp.unmap_vmas 12.79 +0.2 12.95 perf-profile.children.cycles-pp.do_execveat_common 13.90 +0.2 14.07 perf-profile.children.cycles-pp.handle_mm_fault 6.95 +0.2 7.13 ± 2% perf-profile.children.cycles-pp.do_exit 6.95 +0.2 7.13 ± 2% perf-profile.children.cycles-pp.do_group_exit 6.95 +0.2 7.13 ± 2% perf-profile.children.cycles-pp.__wake_up_parent 6.40 ± 2% +0.2 6.62 perf-profile.children.cycles-pp.vfprintf 8.38 +0.2 8.61 perf-profile.children.cycles-pp.__vsnprintf_chk 9.21 +0.2 9.46 perf-profile.children.cycles-pp.mmput 9.16 +0.2 9.41 perf-profile.children.cycles-pp.exit_mmap 19.85 +0.3 20.13 perf-profile.children.cycles-pp.entry_SYSCALL_64_fastpath 17.60 -1.1 16.46 perf-profile.self.cycles-pp.intel_idle 6.03 ± 2% +0.2 6.26 perf-profile.self.cycles-pp.vfprintf unixbench.score 14000 +-+-----------------------------------------------------------------+ O.O..O.O.O.O..O.O.O.O..O.O.O.O..O.O.O..O.O.O.+ +.+.+..+.+.+.+..+.| 12000 +-+ : : | | : : | 10000 +-+ : : | | : : | 8000 +-+ : : | | : : | 6000 +-+ : : | | : : | 4000 +-+ : : | | :: | 2000 +-+ : | | : | 0 +-+-----------------------------------------------------------------+ 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, Xiaolong View attachment "config-4.15.0-rc2-00176-ga4c3c04" of type "text/plain" (163807 bytes) View attachment "job-script" of type "text/plain" (6791 bytes) View attachment "job.yaml" of type "text/plain" (4444 bytes) View attachment "reproduce" of type "text/plain" (291 bytes)
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