From: kernel test robot <oliver.sang@intel.com>
To: Peng Wang <peng_wang@linux.alibaba.com>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
<linux-kernel@vger.kernel.org>, <peterz@infradead.org>,
<mingo@redhat.com>, <will@kernel.org>, <boqun@kernel.org>,
<longman@redhat.com>, <dbueso@suse.de>,
Peng Wang <peng_wang@linux.alibaba.com>, <oliver.sang@intel.com>
Subject: Re: [PATCH] locking/rwsem: Remove reader optimistic lock stealing
Date: Sun, 31 May 2026 15:27:16 +0800 [thread overview]
Message-ID: <202605291757.b455c22c-lkp@intel.com> (raw)
In-Reply-To: <20260521095926.29363-1-peng_wang@linux.alibaba.com>
Hello,
kernel test robot noticed a 19.3% regression of fio.write_iops on:
commit: b3bfaf6505df7705d1d7aa21e09c19a98b10dc84 ("[PATCH] locking/rwsem: Remove reader optimistic lock stealing")
url: https://github.com/intel-lab-lkp/linux/commits/Peng-Wang/locking-rwsem-Remove-reader-optimistic-lock-stealing/20260521-183741
base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git 43a037d4fa6d7e7f9437e069f857a5e06eb2dff7
patch link: https://lore.kernel.org/all/20260521095926.29363-1-peng_wang@linux.alibaba.com/
patch subject: [PATCH] locking/rwsem: Remove reader optimistic lock stealing
testcase: fio-basic
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory
parameters:
runtime: 300s
disk: 1HDD
fs: btrfs
nr_task: 100%
test_size: 128G
rw: randwrite
bs: 4k
ioengine: ftruncate
cpufreq_governor: performance
In addition to that, the commit also has significant impact on the following tests:
+------------------+-------------------------------------------------------------+
| testcase: change | stress-ng: stress-ng.shm-sysv.ops_per_sec 14.3% improvement |
| test parameters | cpufreq_governor=performance |
| | nr_threads=100% |
| | test=shm-sysv |
| | testtime=60s |
+------------------+-------------------------------------------------------------+
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/202605291757.b455c22c-lkp@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260529/202605291757.b455c22c-lkp@intel.com
=========================================================================================
bs/compiler/cpufreq_governor/disk/fs/ioengine/kconfig/nr_task/rootfs/runtime/rw/tbox_group/test_size/testcase:
4k/gcc-14/performance/1HDD/btrfs/ftruncate/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/300s/randwrite/lkp-icl-2sp9/128G/fio-basic
commit:
43a037d4fa ("seqlock: Allow UBSAN_ALIGNMENT to fail optimizing")
b3bfaf6505 ("[PATCH] locking/rwsem: Remove reader optimistic lock stealing")
43a037d4fa6d7e7f b3bfaf6505df7705d1d7aa21e09
---------------- ---------------------------
%stddev %change %stddev
\ | \
0.04 ± 36% +0.1 0.10 ± 2% fio.latency_1000us%
9.89 +7.2 17.10 fio.latency_100us%
17.86 ± 2% -17.3 0.52 ± 20% fio.latency_10us%
4.63 ± 6% -4.2 0.44 ± 2% fio.latency_20us%
39.20 +19.2 58.39 fio.latency_250us%
0.13 ± 45% -0.1 0.06 ± 6% fio.latency_2us%
5.17 ± 8% -4.9 0.24 ± 46% fio.latency_4us%
16.12 +4.5 20.57 ± 2% fio.latency_500us%
4.52 ± 9% -2.8 1.73 ± 3% fio.latency_50us%
1.86 ± 4% -1.6 0.26 ± 3% fio.latency_750us%
80.70 +23.6% 99.76 fio.time.elapsed_time
80.70 +23.6% 99.76 fio.time.elapsed_time.max
3398 ± 24% -50.1% 1696 ± 21% fio.time.involuntary_context_switches
1275 ± 3% +30.2% 1660 fio.time.system_time
31138255 +37.1% 42697561 fio.time.voluntary_context_switches
1633 -19.3% 1318 fio.write_bw_MBps
449877 -8.3% 412330 fio.write_clat_95%_ns
561152 -12.2% 492885 fio.write_clat_99%_ns
150967 +24.5% 187975 fio.write_clat_mean_ns
159157 -19.1% 128723 fio.write_clat_stddev
418163 -19.3% 337623 fio.write_iops
3.889e+09 +20.6% 4.689e+09 cpuidle..time
33940620 +37.1% 46542688 cpuidle..usage
25.27 ± 3% +5.8% 26.74 ± 2% iostat.cpu.system
1.05 +16.2% 1.22 iostat.cpu.user
128.58 +14.9% 147.79 uptime.boot
6572 +12.0% 7362 uptime.idle
0.75 ± 2% +0.1 0.81 ± 2% mpstat.cpu.all.irq%
0.13 ± 2% -0.0 0.12 ± 2% mpstat.cpu.all.soft%
1.03 +0.2 1.20 mpstat.cpu.all.usr%
183168 ± 5% +7.7% 197182 ± 2% numa-numastat.node0.numa_hit
707493 ± 4% +9.4% 774114 ± 2% numa-numastat.node1.local_node
750282 +9.4% 821047 numa-numastat.node1.numa_hit
375447 +9.7% 411736 sched_debug.cpu.nr_switches.avg
386408 +9.5% 422976 sched_debug.cpu.nr_switches.max
340142 ± 2% +9.4% 372192 sched_debug.cpu.nr_switches.min
4394759 +10.1% 4838493 vmstat.memory.cache
742204 +11.4% 826992 vmstat.system.cs
427361 +10.7% 472956 vmstat.system.in
380208 ± 67% +111.5% 804091 ± 22% numa-meminfo.node1.Active
380195 ± 67% +111.5% 804078 ± 22% numa-meminfo.node1.Active(anon)
20479 ±143% +928.0% 210520 ± 16% numa-meminfo.node1.Mapped
134972 ± 4% +334.2% 586041 ± 3% numa-meminfo.node1.Shmem
1016 ± 2% +6.2% 1078 ± 2% turbostat.Avg_MHz
28.30 ± 2% +1.7 30.04 ± 2% turbostat.Busy%
35943585 +36.1% 48919629 turbostat.IRQ
0.06 +0.0 0.07 turbostat.POLL%
2.05 -10.7% 1.83 perf-sched.total_wait_and_delay.average.ms
635441 +8.6% 690012 perf-sched.total_wait_and_delay.count.ms
2.05 -10.8% 1.83 perf-sched.total_wait_time.average.ms
2.05 -10.7% 1.83 perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
635441 +8.6% 690012 perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown]
2.05 -10.8% 1.83 perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
183285 ± 5% +7.7% 197373 ± 2% numa-vmstat.node0.numa_hit
95133 ± 67% +111.4% 201074 ± 22% numa-vmstat.node1.nr_active_anon
5148 ±143% +923.4% 52686 ± 16% numa-vmstat.node1.nr_mapped
33827 ± 4% +333.3% 146565 ± 3% numa-vmstat.node1.nr_shmem
95133 ± 67% +111.4% 201074 ± 22% numa-vmstat.node1.nr_zone_active_anon
750372 +9.4% 821016 numa-vmstat.node1.numa_hit
707583 ± 4% +9.4% 774083 ± 2% numa-vmstat.node1.numa_local
841564 +54.2% 1297873 meminfo.Active
841532 +54.2% 1297841 meminfo.Active(anon)
85390 ± 2% +17.1% 99975 meminfo.AnonHugePages
4263847 +10.7% 4718785 meminfo.Cached
3400733 +14.1% 3880266 meminfo.Committed_AS
101799 +182.4% 287453 ± 5% meminfo.Mapped
6510661 +6.6% 6942224 meminfo.Memused
148510 +306.2% 603279 ± 2% meminfo.Shmem
768695 +11.0% 853548 perf-stat.i.context-switches
5070 ± 7% +35.3% 6858 perf-stat.i.cpu-migrations
2575 ± 2% +9.1% 2809 ± 4% perf-stat.i.minor-faults
2575 ± 2% +9.1% 2809 ± 4% perf-stat.i.page-faults
759278 +11.3% 845041 perf-stat.ps.context-switches
5014 ± 7% +35.5% 6795 perf-stat.ps.cpu-migrations
2544 ± 2% +9.3% 2781 ± 4% perf-stat.ps.minor-faults
2544 ± 2% +9.3% 2781 ± 4% perf-stat.ps.page-faults
210458 +54.2% 324493 proc-vmstat.nr_active_anon
1066202 +10.7% 1179895 proc-vmstat.nr_file_pages
25450 +182.5% 71894 ± 5% proc-vmstat.nr_mapped
37204 +305.5% 150855 ± 2% proc-vmstat.nr_shmem
210458 +54.2% 324493 proc-vmstat.nr_zone_active_anon
2110 ± 50% +202.1% 6377 ± 22% proc-vmstat.numa_hint_faults_local
934523 +9.2% 1020627 proc-vmstat.numa_hit
868232 +9.9% 954306 proc-vmstat.numa_local
1003773 +9.0% 1093947 proc-vmstat.pgalloc_normal
295121 +26.3% 372800 ± 3% proc-vmstat.pgfault
301174 ± 3% +13.5% 341864 ± 3% proc-vmstat.pgfree
16096 ± 5% +18.3% 19037 ± 6% proc-vmstat.pgreuse
12.71 ± 80% -10.8 1.92 ±142% perf-profile.calltrace.cycles-pp.__ordered_events__flush.perf_session__process_user_event.perf_session__process_events.record__finish_output.cmd_record
12.71 ± 80% -10.8 1.92 ±142% perf-profile.calltrace.cycles-pp.cmd_record
12.71 ± 80% -10.8 1.92 ±142% perf-profile.calltrace.cycles-pp.ordered_events__deliver_event.__ordered_events__flush.perf_session__process_user_event.perf_session__process_events.record__finish_output
12.71 ± 80% -10.8 1.92 ±142% perf-profile.calltrace.cycles-pp.perf_session__deliver_event.ordered_events__deliver_event.__ordered_events__flush.perf_session__process_user_event.perf_session__process_events
12.71 ± 80% -10.8 1.92 ±142% perf-profile.calltrace.cycles-pp.perf_session__process_events.record__finish_output.cmd_record
12.71 ± 80% -10.8 1.92 ±142% perf-profile.calltrace.cycles-pp.perf_session__process_user_event.perf_session__process_events.record__finish_output.cmd_record
12.71 ± 80% -10.8 1.92 ±142% perf-profile.calltrace.cycles-pp.record__finish_output.cmd_record
12.70 ± 80% -10.8 1.92 ±142% perf-profile.calltrace.cycles-pp.build_id__mark_dso_hit.perf_session__deliver_event.ordered_events__deliver_event.__ordered_events__flush.perf_session__process_user_event
12.30 ± 78% -10.4 1.92 ±142% perf-profile.calltrace.cycles-pp.sample__for_each_callchain_node.build_id__mark_dso_hit.perf_session__deliver_event.ordered_events__deliver_event.__ordered_events__flush
12.15 ± 78% -10.2 1.92 ±142% perf-profile.calltrace.cycles-pp.__thread__resolve_callchain.sample__for_each_callchain_node.build_id__mark_dso_hit.perf_session__deliver_event.ordered_events__deliver_event
10.31 ± 85% -8.4 1.92 ±142% perf-profile.calltrace.cycles-pp.thread__resolve_callchain_sample.__thread__resolve_callchain.sample__for_each_callchain_node.build_id__mark_dso_hit.perf_session__deliver_event
10.15 ± 84% -8.2 1.92 ±142% perf-profile.calltrace.cycles-pp.add_callchain_ip.thread__resolve_callchain_sample.__thread__resolve_callchain.sample__for_each_callchain_node.build_id__mark_dso_hit
5.59 ±107% -4.7 0.88 ±223% perf-profile.calltrace.cycles-pp.cmd_record.perf_c2c__record.handle_internal_command.main
5.59 ±107% -4.7 0.88 ±223% perf-profile.calltrace.cycles-pp.perf_c2c__record.handle_internal_command.main
7.33 ± 84% -4.5 2.80 ±148% perf-profile.calltrace.cycles-pp.handle_internal_command.main
7.33 ± 84% -4.5 2.80 ±148% perf-profile.calltrace.cycles-pp.main
5.92 ±126% -4.2 1.76 ±223% perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
3.95 ± 72% -4.0 0.00 perf-profile.calltrace.cycles-pp.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call
3.95 ± 72% -4.0 0.00 perf-profile.calltrace.cycles-pp.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
3.95 ± 72% -4.0 0.00 perf-profile.calltrace.cycles-pp.acpi_safe_halt.acpi_idle_do_entry.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter
3.95 ± 72% -4.0 0.00 perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
3.95 ± 72% -4.0 0.00 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
3.95 ± 72% -4.0 0.00 perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.common_startup_64
7.31 ± 94% -3.6 3.67 ±160% perf-profile.calltrace.cycles-pp.asm_exc_page_fault
6.27 ±118% -3.5 2.80 ±148% perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
6.27 ±118% -3.5 2.80 ±148% perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault
5.92 ±126% -3.3 2.63 ±223% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
4.10 ± 72% -3.2 0.88 ±223% perf-profile.calltrace.cycles-pp.common_startup_64
4.10 ± 72% -3.2 0.88 ±223% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.common_startup_64
4.10 ± 72% -3.2 0.88 ±223% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.common_startup_64
4.10 ± 72% -3.2 0.88 ±223% perf-profile.calltrace.cycles-pp.start_secondary.common_startup_64
3.42 ±100% +0.7 4.17 ±223% perf-profile.calltrace.cycles-pp.__free_event.perf_event_release_kernel.perf_release.__fput.task_work_run
3.42 ±100% +0.7 4.17 ±223% perf-profile.calltrace.cycles-pp.sw_perf_event_destroy.__free_event.perf_event_release_kernel.perf_release.__fput
20.04 ± 76% -16.4 3.67 ±160% perf-profile.children.cycles-pp.cmd_record
12.71 ± 80% -10.8 1.92 ±142% perf-profile.children.cycles-pp.__ordered_events__flush
12.71 ± 80% -10.8 1.92 ±142% perf-profile.children.cycles-pp.ordered_events__deliver_event
12.71 ± 80% -10.8 1.92 ±142% perf-profile.children.cycles-pp.perf_session__deliver_event
12.71 ± 80% -10.8 1.92 ±142% perf-profile.children.cycles-pp.perf_session__process_events
12.71 ± 80% -10.8 1.92 ±142% perf-profile.children.cycles-pp.perf_session__process_user_event
12.71 ± 80% -10.8 1.92 ±142% perf-profile.children.cycles-pp.record__finish_output
12.50 ± 79% -10.6 1.92 ±142% perf-profile.children.cycles-pp.build_id__mark_dso_hit
12.50 ± 79% -10.6 1.92 ±142% perf-profile.children.cycles-pp.sample__for_each_callchain_node
12.15 ± 78% -10.2 1.92 ±142% perf-profile.children.cycles-pp.__thread__resolve_callchain
10.31 ± 85% -8.4 1.92 ±142% perf-profile.children.cycles-pp.add_callchain_ip
10.31 ± 85% -8.4 1.92 ±142% perf-profile.children.cycles-pp.thread__resolve_callchain_sample
7.94 ±132% -7.9 0.00 perf-profile.children.cycles-pp.ksys_write
7.94 ±132% -7.9 0.00 perf-profile.children.cycles-pp.vfs_write
5.59 ±107% -4.7 0.88 ±223% perf-profile.children.cycles-pp.perf_c2c__record
7.33 ± 84% -4.5 2.80 ±148% perf-profile.children.cycles-pp.handle_internal_command
7.33 ± 84% -4.5 2.80 ±148% perf-profile.children.cycles-pp.main
4.44 ± 59% -4.4 0.00 perf-profile.children.cycles-pp.__mmap_region
4.44 ± 59% -4.4 0.00 perf-profile.children.cycles-pp.do_mmap
4.44 ± 59% -4.4 0.00 perf-profile.children.cycles-pp.vm_mmap_pgoff
3.95 ± 72% -4.0 0.00 perf-profile.children.cycles-pp.acpi_idle_do_entry
3.95 ± 72% -4.0 0.00 perf-profile.children.cycles-pp.acpi_idle_enter
3.95 ± 72% -4.0 0.00 perf-profile.children.cycles-pp.acpi_safe_halt
3.95 ± 72% -4.0 0.00 perf-profile.children.cycles-pp.cpuidle_enter
3.95 ± 72% -4.0 0.00 perf-profile.children.cycles-pp.cpuidle_enter_state
3.95 ± 72% -4.0 0.00 perf-profile.children.cycles-pp.cpuidle_idle_call
3.95 ± 72% -4.0 0.00 perf-profile.children.cycles-pp.pv_native_safe_halt
3.92 ±107% -3.9 0.00 perf-profile.children.cycles-pp.map_symbol__exit
6.27 ±118% -3.6 2.63 ±223% perf-profile.children.cycles-pp.handle_mm_fault
7.87 ± 86% -3.3 4.55 ±169% perf-profile.children.cycles-pp.asm_exc_page_fault
5.92 ±126% -3.3 2.63 ±223% perf-profile.children.cycles-pp.__handle_mm_fault
4.10 ± 72% -3.2 0.88 ±223% perf-profile.children.cycles-pp.common_startup_64
4.10 ± 72% -3.2 0.88 ±223% perf-profile.children.cycles-pp.cpu_startup_entry
4.10 ± 72% -3.2 0.88 ±223% perf-profile.children.cycles-pp.do_idle
4.10 ± 72% -3.2 0.88 ±223% perf-profile.children.cycles-pp.start_secondary
6.47 ±115% -2.8 3.67 ±160% perf-profile.children.cycles-pp.do_user_addr_fault
6.47 ±115% -2.8 3.67 ±160% perf-profile.children.cycles-pp.exc_page_fault
3.98 ± 74% -1.6 2.38 ±223% perf-profile.children.cycles-pp.its_return_thunk
3.42 ±100% +0.7 4.17 ±223% perf-profile.children.cycles-pp.__free_event
3.42 ±100% +0.7 4.17 ±223% perf-profile.children.cycles-pp.sw_perf_event_destroy
***************************************************************************************************
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-14/performance/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/lkp-gnr-2sp4/shm-sysv/stress-ng/60s
commit:
43a037d4fa ("seqlock: Allow UBSAN_ALIGNMENT to fail optimizing")
b3bfaf6505 ("[PATCH] locking/rwsem: Remove reader optimistic lock stealing")
43a037d4fa6d7e7f b3bfaf6505df7705d1d7aa21e09
---------------- ---------------------------
%stddev %change %stddev
\ | \
1251446 -75.9% 301654 stress-ng.shm-sysv.nanosecs_per_shmat_call
3450142 -68.9% 1074649 ± 2% stress-ng.shm-sysv.nanosecs_per_shmdt_call
322286 -22.9% 248566 stress-ng.shm-sysv.nanosecs_per_shmget_call
219186 +14.3% 250564 stress-ng.shm-sysv.ops
3658 +14.3% 4181 stress-ng.shm-sysv.ops_per_sec
7507 +45.8% 10944 stress-ng.time.involuntary_context_switches
14229412 +16.9% 16632333 ± 2% stress-ng.time.minor_page_faults
1785 +49.8% 2675 stress-ng.time.percent_of_cpu_this_job_got
1036 +51.4% 1569 stress-ng.time.system_time
1605102 +24.8% 2003722 stress-ng.time.voluntary_context_switches
12183165 +9.5% 13338260 cpuidle..usage
6385 ± 3% +25.9% 8037 ± 9% perf-c2c.HITM.local
154924 ± 3% +19.3% 184900 ± 3% meminfo.Mapped
56527 ± 3% +9.7% 61983 ± 2% meminfo.PageTables
18.15 ± 11% +47.5% 26.76 ± 6% vmstat.procs.r
58533 +22.9% 71928 vmstat.system.cs
239900 +15.2% 276246 vmstat.system.in
0.71 +0.1 0.78 mpstat.cpu.all.irq%
0.14 +0.0 0.17 mpstat.cpu.all.nice%
6.89 +3.5 10.36 mpstat.cpu.all.sys%
11.83 ± 4% +36.7% 16.17 ± 3% mpstat.max_utilization_pct
5045408 ± 3% +18.5% 5977715 ± 2% numa-numastat.node0.local_node
5226760 ± 2% +16.6% 6096126 numa-numastat.node0.numa_hit
4935973 ± 3% +14.2% 5637088 numa-numastat.node1.local_node
5018567 ± 3% +15.2% 5782749 numa-numastat.node1.numa_hit
5226696 ± 2% +16.6% 6096100 numa-vmstat.node0.numa_hit
5045344 ± 3% +18.5% 5977690 ± 2% numa-vmstat.node0.numa_local
5018578 ± 3% +15.2% 5782937 numa-vmstat.node1.numa_hit
4935984 ± 3% +14.2% 5637277 numa-vmstat.node1.numa_local
44.00 -25.4% 32.83 perf-sched.total_wait_and_delay.average.ms
136083 +37.6% 187199 perf-sched.total_wait_and_delay.count.ms
43.82 -25.5% 32.65 perf-sched.total_wait_time.average.ms
44.00 -25.4% 32.83 perf-sched.wait_and_delay.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
136083 +37.6% 187199 perf-sched.wait_and_delay.count.[unknown].[unknown].[unknown].[unknown].[unknown]
43.82 -25.5% 32.65 perf-sched.wait_time.avg.ms.[unknown].[unknown].[unknown].[unknown].[unknown]
60660 +23.5% 74920 perf-stat.i.context-switches
3628 +51.4% 5491 perf-stat.i.cpu-migrations
240822 +16.3% 280126 ± 2% perf-stat.i.minor-faults
247803 +16.3% 288104 ± 2% perf-stat.i.page-faults
59664 +23.3% 73595 perf-stat.ps.context-switches
3578 +50.8% 5396 perf-stat.ps.cpu-migrations
236274 +16.3% 274869 ± 2% perf-stat.ps.minor-faults
243169 +16.3% 282723 ± 2% perf-stat.ps.page-faults
38758 ± 3% +19.3% 46256 ± 3% proc-vmstat.nr_mapped
14176 ± 3% +9.3% 15495 ± 2% proc-vmstat.nr_page_table_pages
34663 ± 17% +34.6% 46646 ± 19% proc-vmstat.numa_hint_faults
27962 ± 23% +51.1% 42243 ± 16% proc-vmstat.numa_hint_faults_local
10246657 ± 2% +15.9% 11879228 proc-vmstat.numa_hit
9982711 ± 2% +16.4% 11615157 proc-vmstat.numa_local
43773 ± 20% +37.0% 59949 ± 15% proc-vmstat.numa_pte_updates
10940550 ± 2% +15.5% 12640941 proc-vmstat.pgalloc_normal
14977157 +15.9% 17360370 ± 2% proc-vmstat.pgfault
10590608 ± 2% +16.2% 12302205 proc-vmstat.pgfree
1242845 +14.3% 1420964 proc-vmstat.unevictable_pgs_scanned
339.83 +40.1% 476.17 turbostat.Avg_MHz
9.14 +3.6 12.78 turbostat.Busy%
4.17 +1.6 5.73 turbostat.C1E%
59.56 +3.6 63.17 turbostat.C6%
27.42 -8.7 18.68 turbostat.C6P%
7.09 +27.2% 9.02 turbostat.CPU%c1
76.31 -9.7% 68.91 turbostat.CPU%c6
15351025 +15.5% 17723005 turbostat.IRQ
1748282 +26.1% 2204598 turbostat.NMI
158.43 +9.1% 172.81 turbostat.PkgWatt
5.20 +2.0% 5.30 turbostat.RAMWatt
15202 ± 21% +45.4% 22111 ± 9% sched_debug.cfs_rq:/.avg_vruntime.avg
44395 ± 8% +24.7% 55374 ± 9% sched_debug.cfs_rq:/.avg_vruntime.max
7949 ± 26% +69.1% 13440 ± 20% sched_debug.cfs_rq:/.avg_vruntime.min
0.05 ± 9% +50.7% 0.07 ± 18% sched_debug.cfs_rq:/.h_nr_queued.avg
0.21 ± 8% +15.2% 0.24 ± 8% sched_debug.cfs_rq:/.h_nr_queued.stddev
0.05 ± 10% +51.8% 0.07 ± 18% sched_debug.cfs_rq:/.h_nr_runnable.avg
0.21 ± 8% +16.3% 0.24 ± 8% sched_debug.cfs_rq:/.h_nr_runnable.stddev
15419 ± 7% +45.6% 22447 ± 18% sched_debug.cfs_rq:/.load.avg
0.05 ± 9% +50.7% 0.07 ± 18% sched_debug.cfs_rq:/.nr_queued.avg
0.21 ± 8% +15.2% 0.24 ± 8% sched_debug.cfs_rq:/.nr_queued.stddev
88.44 ± 7% +20.7% 106.78 ± 7% sched_debug.cfs_rq:/.runnable_avg.avg
2088 ± 57% -72.9% 564.91 ±109% sched_debug.cfs_rq:/.sum_weight.avg
435307 ± 48% -73.3% 116029 ± 98% sched_debug.cfs_rq:/.sum_weight.max
29171 ± 52% -73.3% 7775 ±101% sched_debug.cfs_rq:/.sum_weight.stddev
87.80 ± 7% +20.8% 106.05 ± 7% sched_debug.cfs_rq:/.util_avg.avg
15202 ± 21% +45.4% 22111 ± 9% sched_debug.cfs_rq:/.zero_vruntime.avg
44395 ± 8% +24.7% 55374 ± 9% sched_debug.cfs_rq:/.zero_vruntime.max
7949 ± 26% +69.1% 13440 ± 20% sched_debug.cfs_rq:/.zero_vruntime.min
1181 -5.1% 1120 sched_debug.cpu.clock_task.stddev
118497 +13.1% 134053 sched_debug.cpu.curr->pid.max
0.00 ± 5% +10.8% 0.00 ± 8% sched_debug.cpu.next_balance.stddev
0.04 ± 8% +53.3% 0.07 ± 18% sched_debug.cpu.nr_running.avg
0.21 ± 7% +16.0% 0.24 ± 8% sched_debug.cpu.nr_running.stddev
8607 +19.6% 10297 sched_debug.cpu.nr_switches.avg
6329 ± 2% +21.8% 7706 ± 9% sched_debug.cpu.nr_switches.min
0.67 -10.3% 0.60 ± 2% sched_debug.cpu.nr_uninterruptible.avg
11.11 ± 8% +35.4% 15.04 ± 26% sched_debug.cpu.nr_uninterruptible.stddev
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
prev parent reply other threads:[~2026-05-31 7:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-21 9:59 Peng Wang
2026-05-22 2:08 ` Waiman Long
2026-05-22 3:33 ` Peng Wang
2026-05-22 8:55 ` Peter Zijlstra
2026-05-22 9:14 ` Peter Zijlstra
2026-05-22 10:06 ` Peng Wang
2026-06-04 14:14 ` [RFC PATCH v2] locking/rwsem: Block reader stealing during writer phase Peng Wang
2026-05-31 7:27 ` kernel test robot [this message]
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