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X-MS-Exchange-CrossTenant-UserPrincipalName: RMkLGKUD5F2Mx4xCvVrnTSDmCfWtmsKO1oijaJZ0JjMyPx3DL47Pfgjsla3ntaOdNHfTV8VKSGpzba6SwzvSKw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR11MB8766 X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 10.2% regression of fsmark.files_per_sec on: commit: d7f6562adeebe62458eb11437b260d3f470849cd ("[PATCH 6/6] sunrpc: introduce possibility that requested number of threads is different from actual") url: https://github.com/intel-lab-lkp/linux/commits/NeilBrown/SUNRPC-move-nrthreads-counting-to-start-stop-threads/20241023-104539 base: git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next patch link: https://lore.kernel.org/all/20241023024222.691745-7-neilb@suse.de/ patch subject: [PATCH 6/6] sunrpc: introduce possibility that requested number of threads is different from actual testcase: fsmark config: x86_64-rhel-8.3 compiler: gcc-12 test machine: 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz (Ivy Bridge-EP) with 64G memory parameters: iterations: 1x nr_threads: 32t disk: 1SSD fs: btrfs fs2: nfsv4 filesize: 8K test_size: 400M sync_method: fsyncBeforeClose nr_directories: 16d nr_files_per_directory: 256fpd cpufreq_governor: performance In addition to that, the commit also has significant impact on the following tests: +------------------+------------------------------------------------------------------------------------------------+ | testcase: change | fsmark: fsmark.files_per_sec 10.2% regression | | test machine | 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz (Ivy Bridge-EP) with 64G memory | | test parameters | cpufreq_governor=performance | | | disk=1SSD | | | filesize=9B | | | fs2=nfsv4 | | | fs=btrfs | | | iterations=1x | | | nr_directories=16d | | | nr_files_per_directory=256fpd | | | nr_threads=32t | | | sync_method=fsyncBeforeClose | | | test_size=400M | +------------------+------------------------------------------------------------------------------------------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202410301321.d8aebe67-oliver.sang@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241030/202410301321.d8aebe67-oliver.sang@intel.com ========================================================================================= compiler/cpufreq_governor/disk/filesize/fs2/fs/iterations/kconfig/nr_directories/nr_files_per_directory/nr_threads/rootfs/sync_method/tbox_group/test_size/testcase: gcc-12/performance/1SSD/8K/nfsv4/btrfs/1x/x86_64-rhel-8.3/16d/256fpd/32t/debian-12-x86_64-20240206.cgz/fsyncBeforeClose/lkp-ivb-2ep2/400M/fsmark commit: 4e9c43765c ("sunrpc: remove all connection limit configuration") d7f6562ade ("sunrpc: introduce possibility that requested number of threads is different from actual") 4e9c43765c3fd361 d7f6562adeebe62458eb11437b2 ---------------- --------------------------- %stddev %change %stddev \ | \ 0.09 ± 78% +173.9% 0.24 ± 29% perf-stat.i.major-faults 0.07 ± 66% -61.1% 0.03 ± 23% perf-sched.sch_delay.avg.ms.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64 0.02 ± 88% +1806.2% 0.46 ±196% perf-sched.wait_time.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown] -17.50 -31.4% -12.00 sched_debug.cpu.nr_uninterruptible.min 5.32 ± 10% -11.9% 4.69 ± 8% sched_debug.cpu.nr_uninterruptible.stddev 76584407 ± 5% +40.6% 1.077e+08 ± 4% fsmark.app_overhead 3016 ± 2% -10.2% 2707 fsmark.files_per_sec 36.83 -7.7% 34.00 fsmark.time.percent_of_cpu_this_job_got 285398 ± 4% +10.5% 315320 meminfo.Active 282671 ± 4% +10.6% 312596 meminfo.Active(file) 15709 ± 11% -28.8% 11189 ± 2% meminfo.Dirty 70764 ± 4% +10.6% 78241 proc-vmstat.nr_active_file 468998 +5.4% 494463 proc-vmstat.nr_dirtied 3931 ± 11% -28.8% 2797 ± 2% proc-vmstat.nr_dirty 462247 +6.7% 493402 proc-vmstat.nr_written 70764 ± 4% +10.6% 78241 proc-vmstat.nr_zone_active_file 3620 ± 10% -30.7% 2507 ± 5% proc-vmstat.nr_zone_write_pending 1135721 +2.6% 1165013 proc-vmstat.numa_hit 1086049 +2.7% 1115353 proc-vmstat.numa_local 56063 ± 2% +18.0% 66177 proc-vmstat.pgactivate 1521044 +2.3% 1555275 proc-vmstat.pgalloc_normal 2522626 +10.2% 2778923 proc-vmstat.pgpgout 3.75 ± 26% -1.9 1.80 ± 7% perf-profile.calltrace.cycles-pp.__x64_sys_exit_group.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.75 ± 26% -1.9 1.80 ± 7% perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.54 ± 39% -1.7 0.89 ±100% perf-profile.calltrace.cycles-pp.event_function_call.perf_event_release_kernel.perf_release.__fput.task_work_run 2.54 ± 39% -1.7 0.89 ±100% perf-profile.calltrace.cycles-pp.smp_call_function_single.event_function_call.perf_event_release_kernel.perf_release.__fput 0.61 ±141% +1.5 2.08 ± 25% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write.writen.record__pushfn 0.61 ±141% +1.5 2.08 ± 25% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write.writen.record__pushfn.perf_mmap__push 0.61 ±141% +1.5 2.08 ± 25% perf-profile.calltrace.cycles-pp.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write.do_syscall_64 0.61 ±141% +1.5 2.08 ± 25% perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write.writen 0.61 ±141% +1.5 2.08 ± 25% perf-profile.calltrace.cycles-pp.shmem_file_write_iter.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.61 ±141% +1.5 2.08 ± 25% perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.51 ±141% +1.6 2.09 ± 29% perf-profile.calltrace.cycles-pp.evlist_cpu_iterator__next.__evlist__disable.__cmd_record.cmd_record.run_builtin 0.81 ±100% +2.2 3.01 ± 44% perf-profile.calltrace.cycles-pp.__evlist__disable.__cmd_record.cmd_record.run_builtin.handle_internal_command 3.11 ± 27% +2.6 5.74 ± 24% perf-profile.calltrace.cycles-pp.__cmd_record.cmd_record.run_builtin.handle_internal_command.main 3.11 ± 27% +2.6 5.74 ± 24% perf-profile.calltrace.cycles-pp.cmd_record.run_builtin.handle_internal_command.main 0.61 ±141% +1.5 2.08 ± 25% perf-profile.children.cycles-pp.generic_perform_write 0.61 ±141% +1.5 2.08 ± 25% perf-profile.children.cycles-pp.ksys_write 0.61 ±141% +1.5 2.08 ± 25% perf-profile.children.cycles-pp.shmem_file_write_iter 0.61 ±141% +1.5 2.08 ± 25% perf-profile.children.cycles-pp.vfs_write 0.81 ±100% +2.2 3.01 ± 44% perf-profile.children.cycles-pp.__evlist__disable *************************************************************************************************** lkp-ivb-2ep2: 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz (Ivy Bridge-EP) with 64G memory ========================================================================================= compiler/cpufreq_governor/disk/filesize/fs2/fs/iterations/kconfig/nr_directories/nr_files_per_directory/nr_threads/rootfs/sync_method/tbox_group/test_size/testcase: gcc-12/performance/1SSD/9B/nfsv4/btrfs/1x/x86_64-rhel-8.3/16d/256fpd/32t/debian-12-x86_64-20240206.cgz/fsyncBeforeClose/lkp-ivb-2ep2/400M/fsmark commit: 4e9c43765c ("sunrpc: remove all connection limit configuration") d7f6562ade ("sunrpc: introduce possibility that requested number of threads is different from actual") 4e9c43765c3fd361 d7f6562adeebe62458eb11437b2 ---------------- --------------------------- %stddev %change %stddev \ | \ 2.35 -2.0% 2.30 iostat.cpu.user 137839 ± 27% +41.1% 194529 ± 17% numa-meminfo.node0.Active 136284 ± 27% +41.7% 193101 ± 17% numa-meminfo.node0.Active(file) 2.80 ± 32% -1.6 1.16 ± 46% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 2.80 ± 32% -1.6 1.16 ± 46% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 1.397e+08 ± 2% +14.5% 1.599e+08 fsmark.app_overhead 4135 -10.2% 3712 fsmark.files_per_sec 48.67 -8.2% 44.67 fsmark.time.percent_of_cpu_this_job_got 34164 ± 27% +41.6% 48381 ± 17% numa-vmstat.node0.nr_active_file 276516 ± 17% +26.7% 350296 ± 10% numa-vmstat.node0.nr_dirtied 276215 ± 17% +26.5% 349400 ± 10% numa-vmstat.node0.nr_written 34164 ± 27% +41.6% 48381 ± 17% numa-vmstat.node0.nr_zone_active_file 80.71 ± 30% +38.5% 111.75 ± 20% sched_debug.cfs_rq:/.removed.load_avg.avg 270.60 ± 12% +16.0% 313.94 ± 9% sched_debug.cfs_rq:/.removed.load_avg.stddev 23.59 ± 44% +49.9% 35.35 ± 24% sched_debug.cfs_rq:/.removed.runnable_avg.avg 23.58 ± 44% +49.8% 35.33 ± 24% sched_debug.cfs_rq:/.removed.util_avg.avg 3281 ± 11% +1047.0% 37635 ±193% sched_debug.cpu.avg_idle.min 598666 +7.0% 640842 proc-vmstat.nr_dirtied 1074454 +1.1% 1086656 proc-vmstat.nr_file_pages 197321 +3.7% 204605 proc-vmstat.nr_inactive_file 598082 +6.8% 638786 proc-vmstat.nr_written 197321 +3.7% 204605 proc-vmstat.nr_zone_inactive_file 1716397 +2.3% 1755672 proc-vmstat.numa_hit 1666723 +2.4% 1705951 proc-vmstat.numa_local 145474 +7.4% 156311 proc-vmstat.pgactivate 2183965 +2.0% 2226921 proc-vmstat.pgalloc_normal 3250818 +10.5% 3591588 proc-vmstat.pgpgout 0.00 ±223% +633.3% 0.02 ± 53% perf-sched.sch_delay.avg.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep 0.01 ±223% +729.3% 0.06 ± 29% perf-sched.sch_delay.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm 0.01 ±223% +466.7% 0.03 ± 22% perf-sched.sch_delay.max.ms.do_nanosleep.hrtimer_nanosleep.__x64_sys_nanosleep.do_syscall_64 0.00 ±223% +973.3% 0.03 ± 61% perf-sched.sch_delay.max.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep 0.02 ±223% +480.6% 0.09 ± 25% perf-sched.sch_delay.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm 0.67 ±223% +506.5% 4.04 perf-sched.wait_and_delay.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm 3.74 ± 52% +190.1% 10.85 ± 36% perf-sched.wait_and_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread 0.68 ±223% +526.0% 4.25 ± 8% perf-sched.wait_and_delay.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm 18.67 ±173% +375.2% 88.72 ± 23% perf-sched.wait_and_delay.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread 0.01 ±143% +212.5% 0.03 ± 47% perf-sched.wait_time.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown] 0.66 ±223% +504.3% 3.99 perf-sched.wait_time.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm 3.69 ± 53% +192.6% 10.79 ± 36% perf-sched.wait_time.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread 0.67 ±223% +525.6% 4.17 ± 8% perf-sched.wait_time.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm 18.65 ±173% +375.4% 88.66 ± 23% perf-sched.wait_time.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread 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. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki