From: kernel test robot <oliver.sang@intel.com>
To: <aubrey.li@linux.intel.com>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <oliver.sang@intel.com>
Subject: [anolis-intel-cloud:devel-5.10] [sched/fair] eb34bf470a: hackbench.throughput 14.3% regression
Date: Mon, 31 Mar 2025 22:32:05 +0800 [thread overview]
Message-ID: <202503312129.2a8ee063-lkp@intel.com> (raw)
Hello,
kernel test robot noticed a 14.3% regression of hackbench.throughput on:
commit: eb34bf470aa84e3d7594928c150c56888b369e33 ("sched/fair: Bring back select_idle_smt(), but differently")
https://gitee.com/anolis/intel-cloud-kernel.git devel-5.10
testcase: hackbench
config: x86_64-anolis-intel-cloud-devel-5.10
compiler: gcc-12
test machine: 240 threads 1 sockets Genuine Intel(R) 0000 (Granite Rapids) with 192G memory
parameters:
nr_threads: 100%
iterations: 8
mode: process
ipc: pipe
cpufreq_governor: performance
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 <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202503312129.2a8ee063-lkp@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250331/202503312129.2a8ee063-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/ipc/iterations/kconfig/mode/nr_threads/rootfs/tbox_group/testcase:
gcc-12/performance/pipe/8/x86_64-anolis-intel-cloud-devel-5.10/process/100%/debian-12-x86_64-20240206.cgz/lkp-gnr-1ap1/hackbench
commit:
80f5f5edac ("sched/fair: Optimize test_idle_cores() for !SMT")
eb34bf470a ("sched/fair: Bring back select_idle_smt(), but differently")
80f5f5edacb1cccc eb34bf470aa84e3d7594928c150
---------------- ---------------------------
%stddev %change %stddev
\ | \
4.55 ± 5% -0.6 3.92 ± 6% mpstat.cpu.all.idle%
65977799 +4.6% 69010684 vmstat.system.cs
1132850 ± 2% -18.2% 926883 vmstat.system.in
278.83 ± 6% -11.3% 247.38 ± 9% sched_debug.cpu.nr_uninterruptible.max
-295.17 -18.9% -239.29 sched_debug.cpu.nr_uninterruptible.min
101.50 ± 3% -19.2% 82.06 ± 4% sched_debug.cpu.nr_uninterruptible.stddev
1459169 +11.9% 1633494 ± 19% proc-vmstat.nr_file_pages
150994 +1.5% 153239 proc-vmstat.nr_kernel_stack
630767 ± 2% +27.6% 805092 ± 39% proc-vmstat.nr_shmem
1.099e+08 ± 2% -23.2% 84388885 ± 2% proc-vmstat.numa_hit
1.099e+08 ± 2% -23.2% 84388885 ± 2% proc-vmstat.numa_local
1.105e+08 ± 2% -23.1% 84933388 ± 2% proc-vmstat.pgalloc_normal
1.093e+08 ± 2% -23.6% 83588849 ± 2% proc-vmstat.pgfree
1339787 ± 3% -14.3% 1148604 hackbench.throughput
1178940 ± 2% -10.9% 1050422 ± 2% hackbench.throughput_avg
1339787 ± 3% -14.3% 1148604 hackbench.throughput_best
976391 ± 4% -12.1% 858353 ± 6% hackbench.throughput_worst
195.13 ± 2% +12.0% 218.48 hackbench.time.elapsed_time
195.13 ± 2% +12.0% 218.48 hackbench.time.elapsed_time.max
5.959e+09 ± 2% +19.3% 7.11e+09 ± 2% hackbench.time.involuntary_context_switches
40522 ± 2% +12.4% 45538 ± 2% hackbench.time.system_time
4462 +12.2% 5005 ± 2% hackbench.time.user_time
7.161e+09 +13.9% 8.155e+09 hackbench.time.voluntary_context_switches
39.26 ±217% +2252.7% 923.65 ± 97% perf-sched.sch_delay.avg.ms.rcu_gp_kthread.kthread.ret_from_fork
7752 ± 7% +13.0% 8762 ± 12% perf-sched.sch_delay.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.entry_SYSCALL_64_after_hwframe
194.31 ±220% +849.8% 1845 ± 84% perf-sched.sch_delay.max.ms.rcu_gp_kthread.kthread.ret_from_fork
7752 ± 7% +13.0% 8762 ± 12% perf-sched.total_sch_delay.max.ms
15485 ± 8% +12.8% 17468 ± 11% perf-sched.total_wait_and_delay.max.ms
7748 ± 8% +13.1% 8765 ± 11% perf-sched.total_wait_time.max.ms
15484 ± 8% +12.8% 17468 ± 11% perf-sched.wait_and_delay.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.entry_SYSCALL_64_after_hwframe
6659 ± 8% +18.8% 7908 ± 9% perf-sched.wait_and_delay.max.ms.smpboot_thread_fn.kthread.ret_from_fork
0.15 ± 41% +2450.5% 3.94 ±134% perf-sched.wait_time.avg.ms.__cond_resched.mutex_lock.pipe_read.new_sync_read.vfs_read
5.02 ± 61% +5567.2% 284.51 ±102% perf-sched.wait_time.max.ms.__cond_resched.mutex_lock.pipe_read.new_sync_read.vfs_read
7742 ± 8% +13.1% 8752 ± 11% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.entry_SYSCALL_64_after_hwframe
6659 ± 8% +18.8% 7908 ± 9% perf-sched.wait_time.max.ms.smpboot_thread_fn.kthread.ret_from_fork
0.03 ± 4% -14.6% 0.02 ± 4% perf-stat.i.MPKI
0.75 +0.0 0.76 perf-stat.i.branch-miss-rate%
7.963e+08 +2.5% 8.163e+08 perf-stat.i.branch-misses
0.38 ± 5% -0.0 0.34 ± 5% perf-stat.i.cache-miss-rate%
7820015 ± 3% -16.3% 6548408 ± 5% perf-stat.i.cache-misses
4.094e+09 +1.6% 4.158e+09 perf-stat.i.cache-references
66817468 +4.5% 69841496 perf-stat.i.context-switches
14015959 +18.0% 16545810 perf-stat.i.cpu-migrations
179705 ± 6% +34.8% 242161 ± 2% perf-stat.i.cycles-between-cache-misses
337.28 +6.9% 360.42 perf-stat.i.metric.K/sec
17632 ± 2% -11.7% 15578 ± 2% perf-stat.i.minor-faults
17691 ± 2% -11.6% 15634 ± 2% perf-stat.i.page-faults
0.58 ± 44% +0.1 0.72 perf-stat.overall.branch-miss-rate%
1.15 ± 44% +22.2% 1.40 perf-stat.overall.cpi
83187 ± 44% +43.7% 119539 ± 4% perf-stat.overall.cycles-between-cache-misses
6.626e+08 ± 44% +22.7% 8.132e+08 perf-stat.ps.branch-misses
3.392e+09 ± 44% +22.0% 4.138e+09 perf-stat.ps.cache-references
55705902 ± 44% +25.0% 69618145 perf-stat.ps.context-switches
11583377 ± 44% +41.7% 16416419 perf-stat.ps.cpu-migrations
9.264e+13 ± 44% +32.6% 1.229e+14 perf-stat.total.instructions
28.27 -1.0 27.28 perf-profile.calltrace.cycles-pp.new_sync_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
27.27 -0.9 26.41 perf-profile.calltrace.cycles-pp.pipe_read.new_sync_read.vfs_read.ksys_read.do_syscall_64
1.55 ± 4% -0.4 1.15 ± 17% perf-profile.calltrace.cycles-pp.copy_page_from_iter.pipe_write.new_sync_write.vfs_write.ksys_write
2.62 ± 3% -0.4 2.22 ± 10% perf-profile.calltrace.cycles-pp.copy_page_to_iter.pipe_read.new_sync_read.vfs_read.ksys_read
1.65 -0.1 1.51 ± 9% perf-profile.calltrace.cycles-pp.prepare_task_switch.__schedule.schedule.pipe_read.new_sync_read
0.53 ± 44% +0.5 1.03 ± 12% perf-profile.calltrace.cycles-pp.available_idle_cpu.id_idle_cpu.select_idle_sibling.select_task_rq_fair.try_to_wake_up
0.59 ± 44% +0.6 1.16 ± 12% perf-profile.calltrace.cycles-pp.id_idle_cpu.select_idle_sibling.select_task_rq_fair.try_to_wake_up.autoremove_wake_function
9.32 ± 3% +1.4 10.71 ± 6% perf-profile.calltrace.cycles-pp.select_idle_sibling.select_task_rq_fair.try_to_wake_up.autoremove_wake_function.__wake_up_common
11.63 ± 2% +1.7 13.31 ± 4% perf-profile.calltrace.cycles-pp.select_task_rq_fair.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
35.66 +2.9 38.59 ± 3% perf-profile.calltrace.cycles-pp.new_sync_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
34.85 +3.1 37.97 ± 3% perf-profile.calltrace.cycles-pp.pipe_write.new_sync_write.vfs_write.ksys_write.do_syscall_64
24.62 ± 2% +3.5 28.11 ± 4% perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.pipe_write.new_sync_write
24.48 ± 2% +3.5 27.97 ± 4% perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.pipe_write
25.53 ± 2% +3.6 29.14 ± 4% perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write
25.99 ± 2% +3.6 29.63 ± 4% perf-profile.calltrace.cycles-pp.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write.ksys_write
32.49 -1.7 30.77 perf-profile.children.cycles-pp.ksys_read
31.32 -1.5 29.78 perf-profile.children.cycles-pp.vfs_read
28.35 -1.0 27.34 perf-profile.children.cycles-pp.new_sync_read
27.49 -0.9 26.60 perf-profile.children.cycles-pp.pipe_read
2.28 ± 9% -0.6 1.68 ± 16% perf-profile.children.cycles-pp.entry_SYSCALL_64
2.03 ± 6% -0.6 1.46 ± 13% perf-profile.children.cycles-pp.security_file_permission
1.43 ± 5% -0.4 1.02 ± 14% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack
1.64 ± 5% -0.4 1.26 ± 13% perf-profile.children.cycles-pp.copy_page_from_iter
2.72 ± 4% -0.4 2.36 ± 9% perf-profile.children.cycles-pp.copy_user_enhanced_fast_string
1.21 ± 6% -0.3 0.86 ± 14% perf-profile.children.cycles-pp.fsnotify
1.14 ± 6% -0.3 0.83 ± 12% perf-profile.children.cycles-pp.apparmor_file_permission
2.70 ± 3% -0.3 2.40 ± 5% perf-profile.children.cycles-pp.copy_page_to_iter
1.44 ± 2% -0.2 1.19 ± 7% perf-profile.children.cycles-pp.__fdget_pos
0.87 ± 5% -0.2 0.64 ± 13% perf-profile.children.cycles-pp.touch_atime
0.80 ± 6% -0.2 0.57 ± 13% perf-profile.children.cycles-pp.current_time
1.04 ± 4% -0.2 0.83 ± 14% perf-profile.children.cycles-pp.copyin
0.82 ± 4% -0.2 0.62 ± 12% perf-profile.children.cycles-pp.file_update_time
0.66 ± 6% -0.2 0.48 ± 13% perf-profile.children.cycles-pp.atime_needs_update
1.18 ± 2% -0.2 1.02 ± 6% perf-profile.children.cycles-pp.__fget_light
2.30 -0.2 2.13 ± 3% perf-profile.children.cycles-pp.__update_load_avg_cfs_rq
0.68 ± 4% -0.2 0.52 ± 10% perf-profile.children.cycles-pp.__cond_resched
0.51 ± 6% -0.1 0.37 ± 12% perf-profile.children.cycles-pp.aa_file_perm
0.50 ± 6% -0.1 0.40 ± 9% perf-profile.children.cycles-pp.syscall_enter_from_user_mode
0.51 ± 3% -0.1 0.42 ± 8% perf-profile.children.cycles-pp.syscall_return_via_sysret
0.34 ± 7% -0.1 0.25 ± 11% perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64
0.24 ± 7% -0.1 0.16 ± 14% perf-profile.children.cycles-pp.rw_verify_area
0.23 ± 5% -0.1 0.16 ± 14% perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack
0.27 ± 5% -0.1 0.21 ± 10% perf-profile.children.cycles-pp.rcu_all_qs
0.17 ± 6% -0.1 0.12 ± 16% perf-profile.children.cycles-pp.iov_iter_init
0.56 ± 2% -0.0 0.52 ± 3% perf-profile.children.cycles-pp.sched_clock_cpu
0.17 ± 6% -0.0 0.13 ± 13% perf-profile.children.cycles-pp.page_copy_sane
0.50 ± 2% -0.0 0.46 ± 3% perf-profile.children.cycles-pp.sched_clock
0.18 ± 5% -0.0 0.14 ± 11% perf-profile.children.cycles-pp.amd_clear_divider
0.22 ± 2% -0.0 0.18 ± 6% perf-profile.children.cycles-pp.rcu_read_unlock_strict
0.44 ± 3% -0.0 0.41 ± 3% perf-profile.children.cycles-pp.native_sched_clock
0.13 ± 4% -0.0 0.10 ± 10% perf-profile.children.cycles-pp.__x64_sys_read
0.15 ± 3% -0.0 0.12 ± 7% perf-profile.children.cycles-pp.__x64_sys_write
0.09 ± 5% -0.0 0.06 ± 7% perf-profile.children.cycles-pp.__bitmap_and
0.05 +0.0 0.07 ± 6% perf-profile.children.cycles-pp.group_balancer_enabled
0.16 ± 9% +0.0 0.20 ± 9% perf-profile.children.cycles-pp.attach_entity_load_avg
0.02 ± 99% +0.1 0.08 perf-profile.children.cycles-pp.cpus_share_cache
0.45 ± 6% +0.1 0.59 ± 12% perf-profile.children.cycles-pp.__cmd_record
0.45 ± 6% +0.1 0.59 ± 12% perf-profile.children.cycles-pp.cmd_record
0.29 ± 10% +0.1 0.44 ± 13% perf-profile.children.cycles-pp.remove_entity_load_avg
1.08 ± 4% +0.2 1.26 ± 6% perf-profile.children.cycles-pp.task_h_load
0.48 ± 6% +0.2 0.69 ± 6% perf-profile.children.cycles-pp._find_next_bit
1.78 ± 5% +0.2 2.02 ± 6% perf-profile.children.cycles-pp.wake_affine
0.94 ± 9% +0.3 1.20 ± 10% perf-profile.children.cycles-pp.migrate_task_rq_fair
0.00 +0.3 0.29 ± 6% perf-profile.children.cycles-pp.cpumask_next
1.67 ± 8% +0.4 2.12 ± 9% perf-profile.children.cycles-pp.set_task_cpu
4.40 ± 2% +0.6 5.00 ± 5% perf-profile.children.cycles-pp.available_idle_cpu
9.39 ± 3% +1.7 11.06 ± 6% perf-profile.children.cycles-pp.select_idle_sibling
11.70 ± 2% +1.9 13.63 ± 4% perf-profile.children.cycles-pp.select_task_rq_fair
38.66 +2.2 40.87 ± 2% perf-profile.children.cycles-pp.ksys_write
37.72 +2.4 40.12 ± 2% perf-profile.children.cycles-pp.vfs_write
26.41 ± 2% +2.7 29.16 ± 2% perf-profile.children.cycles-pp.autoremove_wake_function
26.39 ± 2% +2.8 29.16 ± 2% perf-profile.children.cycles-pp.try_to_wake_up
27.34 ± 2% +2.9 30.19 ± 2% perf-profile.children.cycles-pp.__wake_up_common
27.92 ± 2% +2.9 30.78 ± 2% perf-profile.children.cycles-pp.__wake_up_common_lock
35.89 +2.9 38.82 ± 3% perf-profile.children.cycles-pp.new_sync_write
35.00 +3.1 38.09 ± 3% perf-profile.children.cycles-pp.pipe_write
1.39 ± 5% -0.4 0.99 ± 14% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack
2.68 ± 4% -0.4 2.32 ± 9% perf-profile.self.cycles-pp.copy_user_enhanced_fast_string
1.14 ± 6% -0.3 0.81 ± 14% perf-profile.self.cycles-pp.fsnotify
0.95 ± 6% -0.3 0.68 ± 14% perf-profile.self.cycles-pp.entry_SYSCALL_64
1.15 ± 4% -0.2 0.95 ± 6% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
0.64 ± 5% -0.2 0.45 ± 14% perf-profile.self.cycles-pp.vfs_write
2.27 -0.2 2.10 ± 3% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
0.53 ± 6% -0.2 0.37 ± 15% perf-profile.self.cycles-pp.security_file_permission
0.59 ± 6% -0.2 0.44 ± 12% perf-profile.self.cycles-pp.apparmor_file_permission
0.63 ± 4% -0.1 0.48 ± 10% perf-profile.self.cycles-pp.new_sync_write
1.09 ± 2% -0.1 0.95 ± 5% perf-profile.self.cycles-pp.__fget_light
0.48 ± 6% -0.1 0.34 ± 14% perf-profile.self.cycles-pp.current_time
0.47 ± 6% -0.1 0.34 ± 13% perf-profile.self.cycles-pp.copy_page_from_iter
0.40 ± 6% -0.1 0.29 ± 13% perf-profile.self.cycles-pp.aa_file_perm
0.79 ± 2% -0.1 0.70 ± 4% perf-profile.self.cycles-pp.new_sync_read
0.51 ± 3% -0.1 0.42 ± 7% perf-profile.self.cycles-pp.syscall_return_via_sysret
0.44 ± 4% -0.1 0.35 ± 9% perf-profile.self.cycles-pp.do_syscall_64
0.34 ± 6% -0.1 0.25 ± 14% perf-profile.self.cycles-pp.file_update_time
0.35 ± 4% -0.1 0.26 ± 10% perf-profile.self.cycles-pp.__cond_resched
0.28 ± 6% -0.1 0.20 ± 13% perf-profile.self.cycles-pp.ksys_write
0.25 ± 6% -0.1 0.17 ± 15% perf-profile.self.cycles-pp.__fdget_pos
0.48 ± 3% -0.1 0.41 ± 6% perf-profile.self.cycles-pp.ksys_read
0.28 ± 5% -0.1 0.21 ± 11% perf-profile.self.cycles-pp.atime_needs_update
0.39 ± 6% -0.1 0.32 ± 8% perf-profile.self.cycles-pp.syscall_enter_from_user_mode
0.26 ± 7% -0.1 0.19 ± 11% perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64
0.22 ± 5% -0.1 0.16 ± 12% perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack
0.70 ± 2% -0.1 0.64 ± 4% perf-profile.self.cycles-pp.copy_page_to_iter
0.19 ± 7% -0.1 0.13 ± 16% perf-profile.self.cycles-pp.rw_verify_area
0.34 ± 3% -0.1 0.29 ± 7% perf-profile.self.cycles-pp.exit_to_user_mode_prepare
1.08 -0.1 1.03 ± 2% perf-profile.self.cycles-pp.dequeue_task_fair
0.58 ± 4% -0.0 0.53 ± 5% perf-profile.self.cycles-pp.syscall_exit_to_user_mode
0.19 ± 4% -0.0 0.15 ± 10% perf-profile.self.cycles-pp.rcu_all_qs
0.15 ± 5% -0.0 0.10 ± 13% perf-profile.self.cycles-pp.touch_atime
0.13 ± 8% -0.0 0.09 ± 14% perf-profile.self.cycles-pp.iov_iter_init
0.68 -0.0 0.64 ± 3% perf-profile.self.cycles-pp.dequeue_entity
0.10 ± 7% -0.0 0.08 ± 13% perf-profile.self.cycles-pp.page_copy_sane
0.08 ± 7% -0.0 0.06 ± 11% perf-profile.self.cycles-pp.copyin
0.08 ± 7% -0.0 0.06 ± 11% perf-profile.self.cycles-pp.copyout
0.12 ± 4% -0.0 0.10 ± 6% perf-profile.self.cycles-pp.rcu_read_unlock_strict
0.08 ± 4% -0.0 0.06 ± 6% perf-profile.self.cycles-pp.__bitmap_and
0.27 ± 6% +0.0 0.30 ± 7% perf-profile.self.cycles-pp.enqueue_task
0.16 ± 9% +0.0 0.20 ± 9% perf-profile.self.cycles-pp.attach_entity_load_avg
0.00 +0.1 0.05 perf-profile.self.cycles-pp.group_balancer_enabled
0.31 ± 4% +0.1 0.36 ± 5% perf-profile.self.cycles-pp.id_idle_cpu
0.00 +0.1 0.06 perf-profile.self.cycles-pp.cpus_share_cache
0.53 ± 5% +0.1 0.61 ± 6% perf-profile.self.cycles-pp.update_rq_clock
0.00 +0.1 0.08 ± 7% perf-profile.self.cycles-pp.cpumask_next
0.59 ± 8% +0.1 0.70 ± 8% perf-profile.self.cycles-pp.migrate_task_rq_fair
0.92 ± 4% +0.1 1.04 ± 5% perf-profile.self.cycles-pp.__wake_up_common
0.69 ± 8% +0.2 0.86 ± 8% perf-profile.self.cycles-pp.set_task_cpu
0.38 ± 7% +0.2 0.55 ± 6% perf-profile.self.cycles-pp._find_next_bit
1.07 ± 4% +0.2 1.24 ± 6% perf-profile.self.cycles-pp.task_h_load
2.22 ± 3% +0.2 2.44 ± 4% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
4.36 ± 2% +0.6 4.94 ± 5% perf-profile.self.cycles-pp.available_idle_cpu
0.86 ± 3% +0.9 1.74 ± 4% perf-profile.self.cycles-pp.select_idle_sibling
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
reply other threads:[~2025-03-31 14:32 UTC|newest]
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