Hello,
we have no idea how this change could impact performance, however, we saw
several performance improvements as below.
for stress-ng.nanosleep.ops_per_sec, we did some cross platform check, still
observed similar performance improvement.
so we still make out below report FYI what we observed in our tests.
kernel test robot noticed a 299.9% improvement of stress-ng.io-uring.ops_per_sec on:
commit: 4a9f46a472591e7ffd0e9c5d8cdce26751852554 ("[PATCH] acpi: convert strncpy into strscpy")
url: https://github.com/intel-lab-lkp/linux/commits/goralbaris/acpi-convert-strncpy-into-strscpy/20250507-232259
base: v6.15-rc5
patch link: https://lore.kernel.org/all/20250507152045.12266-1-goralbaris@xxxxxxxxx/
patch subject: [PATCH] acpi: convert strncpy into strscpy
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-12
test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory
parameters:
nr_threads: 100%
testtime: 60s
test: io-uring
cpufreq_governor: performance
In addition to that, the commit also has significant impact on the following tests:
+------------------+----------------------------------------------------------------------------------------------+
| testcase: change | stress-ng: stress-ng.nanosleep.ops_per_sec 23.8% improvement |
| test machine | 256 threads 2 sockets Intel(R) Xeon(R) 6767P CPU @ 2.4GHz (Granite Rapids) with 256G memory |
| test parameters | cpufreq_governor=performance |
| | nr_threads=100% |
| | test=nanosleep |
| | testtime=60s |
+------------------+----------------------------------------------------------------------------------------------+
| testcase: change | stress-ng: stress-ng.nanosleep.ops_per_sec 115.3% improvement |
| test machine | 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory |
| test parameters | cpufreq_governor=performance |
| | nr_threads=100% |
| | test=nanosleep |
| | testtime=60s |
+------------------+----------------------------------------------------------------------------------------------+
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250519/202505191014.718ca1d6-lkp@xxxxxxxxx
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-12/performance/x86_64-rhel-9.4/100%/debian-12-x86_64-20240206.cgz/lkp-srf-2sp2/io-uring/stress-ng/60s
commit:
v6.15-rc5
4a9f46a472 ("acpi: convert strncpy into strscpy")
v6.15-rc5 4a9f46a472591e7ffd0e9c5d8cd
---------------- ---------------------------
%stddev %change %stddev
\ | \
20.29 -4.2% 19.44 boot-time.dhcp
8.679e+09 ± 9% -100.0% 0.00 cpuidle..time
3.258e+08 -100.0% 0.00 cpuidle..usage
20990053 +305.8% 85176369 ± 2% numa-numastat.node1.local_node
21106117 +304.1% 85283811 ± 2% numa-numastat.node1.numa_hit
124217 ± 9% +25.7% 156113 ± 6% perf-c2c.HITM.local
126125 ± 9% +25.5% 158230 ± 6% perf-c2c.HITM.total
3.642e+08 +299.9% 1.456e+09 ± 25% stress-ng.io-uring.ops
6069877 +299.9% 24271031 ± 25% stress-ng.io-uring.ops_per_sec
63452087 +102.5% 1.285e+08 ± 19% stress-ng.time.involuntary_context_switches
5431 +182.5% 15343 ± 20% stress-ng.time.percent_of_cpu_this_job_got
3051 +195.8% 9025 ± 21% stress-ng.time.system_time
4.461e+08 +289.0% 1.735e+09 ± 25% stress-ng.time.voluntary_context_switches
48.09 ± 6% -34.7 13.42 ± 66% mpstat.cpu.all.idle%
19.76 ± 6% -14.5 5.29 ± 89% mpstat.cpu.all.iowait%
4.84 ± 6% -2.6 2.21 ± 77% mpstat.cpu.all.irq%
0.32 ± 6% -0.3 0.04 ± 75% mpstat.cpu.all.soft%
24.66 ± 6% +52.0 76.61 ± 19% mpstat.cpu.all.sys%
17.00 +16.7% 19.83 ± 12% mpstat.max_utilization.seconds
57.31 +57.7% 90.36 ± 10% mpstat.max_utilization_pct
49.43 ± 6% -67.3% 16.17 ± 53% vmstat.cpu.id
29.04 ± 6% +162.8% 76.30 ± 17% vmstat.cpu.sy
19.17 ± 6% -73.3% 5.12 ± 89% vmstat.cpu.wa
71.25 ± 5% -72.5% 19.58 ± 90% vmstat.procs.b
97.21 ± 7% +124.6% 218.37 ± 15% vmstat.procs.r
12688269 ± 6% +142.9% 30825156 ± 19% vmstat.system.cs
5224657 ± 6% -62.8% 1943708 ± 46% vmstat.system.in
289935 ± 3% -22.2% 225623 ± 5% numa-meminfo.node0.SUnreclaim
386160 ± 6% -21.4% 303599 ± 12% numa-meminfo.node0.Slab
11844753 ± 3% -36.4% 7538537 ± 31% numa-meminfo.node1.Active
11844753 ± 3% -36.4% 7538537 ± 31% numa-meminfo.node1.Active(anon)
58156 ± 5% -62.4% 21876 ± 6% numa-meminfo.node1.KernelStack
1029721 ± 12% +32.1% 1360593 ± 11% numa-meminfo.node1.Mapped
234556 ± 4% -25.9% 173820 ± 3% numa-meminfo.node1.SUnreclaim
10965603 ± 4% -37.8% 6824977 ± 33% numa-meminfo.node1.Shmem
305421 ± 8% -17.7% 251285 ± 12% numa-meminfo.node1.Slab
72401 ± 3% -22.1% 56378 ± 5% numa-vmstat.node0.nr_slab_unreclaimable
2963605 ± 3% -36.4% 1885576 ± 31% numa-vmstat.node1.nr_active_anon
58030 ± 5% -62.4% 21811 ± 6% numa-vmstat.node1.nr_kernel_stack
258544 ± 12% +32.1% 341648 ± 11% numa-vmstat.node1.nr_mapped
2743743 ± 4% -37.8% 1707508 ± 33% numa-vmstat.node1.nr_shmem
58559 ± 4% -25.8% 43437 ± 3% numa-vmstat.node1.nr_slab_unreclaimable
2963598 ± 3% -36.4% 1885576 ± 31% numa-vmstat.node1.nr_zone_active_anon
21105653 +304.1% 85285462 ± 2% numa-vmstat.node1.numa_hit
20989589 +305.8% 85178020 ± 2% numa-vmstat.node1.numa_local
12284550 ± 3% -33.5% 8175355 ± 28% meminfo.Active
12284550 ± 3% -33.5% 8175355 ± 28% meminfo.Active(anon)
14613224 ± 3% -28.3% 10483768 ± 22% meminfo.Cached
15092839 ± 2% -26.1% 11151503 ± 20% meminfo.Committed_AS
118013 ± 4% -47.1% 62476 ± 29% meminfo.KernelStack
1189737 ± 9% +24.5% 1481177 ± 12% meminfo.Mapped
19156418 ± 2% -23.0% 14742923 ± 15% meminfo.Memused
524570 -23.8% 399461 ± 2% meminfo.SUnreclaim
11073466 ± 4% -37.3% 6944224 ± 33% meminfo.Shmem
691643 -19.8% 554889 meminfo.Slab
399938 -13.6% 345539 ± 5% meminfo.VmallocUsed
19273868 ± 2% -23.1% 14829426 ± 15% meminfo.max_used_kB
3072505 ± 3% -33.5% 2044367 ± 28% proc-vmstat.nr_active_anon
303038 +1.5% 307548 proc-vmstat.nr_anon_pages
5974768 +1.8% 6084995 proc-vmstat.nr_dirty_background_threshold
11964146 +1.8% 12184870 proc-vmstat.nr_dirty_threshold
3655222 ± 3% -28.3% 2622497 ± 22% proc-vmstat.nr_file_pages
60117910 +1.8% 61221778 proc-vmstat.nr_free_pages
60050485 +1.8% 61151282 proc-vmstat.nr_free_pages_blocks
117206 ± 4% -46.9% 62248 ± 28% proc-vmstat.nr_kernel_stack
298065 ± 9% +24.9% 372258 ± 12% proc-vmstat.nr_mapped
2770279 ± 4% -37.3% 1737611 ± 33% proc-vmstat.nr_shmem
41774 -7.0% 38862 ± 3% proc-vmstat.nr_slab_reclaimable
130994 -23.8% 99846 ± 2% proc-vmstat.nr_slab_unreclaimable
3072505 ± 3% -33.5% 2044367 ± 28% proc-vmstat.nr_zone_active_anon
37968818 +257.4% 1.357e+08 ± 25% proc-vmstat.numa_hit
768.00 +22.1% 937.67 ± 11% proc-vmstat.numa_huge_pte_updates
37769910 +258.7% 1.355e+08 ± 25% proc-vmstat.numa_local
113917 ± 3% -58.9% 46844 ± 9% proc-vmstat.numa_pages_migrated
622038 ± 3% +16.6% 725068 ± 7% proc-vmstat.numa_pte_updates
38252525 +255.2% 1.359e+08 ± 25% proc-vmstat.pgalloc_normal
34002082 +291.1% 1.33e+08 ± 25% proc-vmstat.pgfree
113917 ± 3% -58.9% 46844 ± 9% proc-vmstat.pgmigrate_success
19955 -43.2% 11333 proc-vmstat.pgreuse
17603355 -73.2% 4719412 ± 91% proc-vmstat.unevictable_pgs_culled
0.31 ± 57% -71.0% 0.09 ± 6% perf-stat.i.MPKI
2.695e+10 ± 6% +157.7% 6.946e+10 ± 18% perf-stat.i.branch-instructions
0.93 -0.5 0.45 ± 12% perf-stat.i.branch-miss-rate%
2.182e+08 ± 6% +24.3% 2.712e+08 ± 7% perf-stat.i.branch-misses
3.06 ± 33% +5.9 8.91 ± 64% perf-stat.i.cache-miss-rate%
25459047 ± 6% -18.4% 20785561 ± 16% perf-stat.i.cache-misses
1.322e+09 ± 6% -69.1% 4.09e+08 ± 64% perf-stat.i.cache-references
13341377 ± 6% +142.6% 32367405 ± 19% perf-stat.i.context-switches
3.31 ± 4% -47.1% 1.75 ± 11% perf-stat.i.cpi
3.765e+11 ± 6% +45.5% 5.479e+11 ± 8% perf-stat.i.cpu-cycles
5523943 ± 6% -75.4% 1360465 ±100% perf-stat.i.cpu-migrations
25535 ± 4% +58.9% 40578 ± 10% perf-stat.i.cycles-between-cache-misses
1.337e+11 ± 6% +156.7% 3.432e+11 ± 19% perf-stat.i.instructions
0.35 +76.4% 0.62 ± 10% perf-stat.i.ipc
98.25 ± 6% +78.8% 175.66 ± 14% perf-stat.i.metric.K/sec
1.29 ± 70% +7.8 9.13 ± 71% perf-stat.overall.cache-miss-rate%
9811 ± 70% +173.4% 26822 ± 11% perf-stat.overall.cycles-between-cache-misses
0.24 ± 70% +162.2% 0.62 ± 10% perf-stat.overall.ipc
1.729e+10 ± 71% +295.2% 6.833e+10 ± 18% perf-stat.ps.branch-instructions
1.401e+08 ± 71% +90.5% 2.669e+08 ± 7% perf-stat.ps.branch-misses
8559237 ± 71% +272.1% 31851996 ± 19% perf-stat.ps.context-switches
2.415e+11 ± 71% +123.3% 5.391e+11 ± 8% perf-stat.ps.cpu-cycles
8.577e+10 ± 71% +293.6% 3.376e+11 ± 19% perf-stat.ps.instructions
5.678e+12 ± 70% +267.4% 2.086e+13 ± 19% perf-stat.total.instructions
1174613 +256.2% 4183841 ± 28% sched_debug.cfs_rq:/.avg_vruntime.avg
3797895 ± 12% +61.5% 6135427 ± 13% sched_debug.cfs_rq:/.avg_vruntime.max
970333 +185.9% 2773983 ± 52% sched_debug.cfs_rq:/.avg_vruntime.min
0.31 ± 6% +108.3% 0.64 ± 14% sched_debug.cfs_rq:/.h_nr_queued.avg
0.29 ± 6% +107.6% 0.59 ± 15% sched_debug.cfs_rq:/.h_nr_runnable.avg
138886 ± 16% -69.1% 42880 ±100% sched_debug.cfs_rq:/.left_deadline.avg
138860 ± 16% -69.1% 42873 ±100% sched_debug.cfs_rq:/.left_vruntime.avg
39.33 ± 48% -53.8% 18.15 ± 27% sched_debug.cfs_rq:/.load_avg.avg
1174613 +256.2% 4183841 ± 28% sched_debug.cfs_rq:/.min_vruntime.avg
3797895 ± 12% +61.5% 6135427 ± 13% sched_debug.cfs_rq:/.min_vruntime.max
970333 +185.9% 2773983 ± 52% sched_debug.cfs_rq:/.min_vruntime.min
0.21 ± 7% +114.0% 0.44 ± 16% sched_debug.cfs_rq:/.nr_queued.avg
0.37 ± 4% -31.8% 0.25 ± 40% sched_debug.cfs_rq:/.nr_queued.stddev
138860 ± 16% -69.1% 42873 ±100% sched_debug.cfs_rq:/.right_vruntime.avg
344.03 ± 4% +88.7% 649.02 ± 16% sched_debug.cfs_rq:/.runnable_avg.avg
1119 ± 10% +34.2% 1501 ± 2% sched_debug.cfs_rq:/.runnable_avg.max
297.90 ± 4% +64.8% 490.81 ± 16% sched_debug.cfs_rq:/.util_avg.avg
1064 ± 8% -10.6% 951.58 ± 3% sched_debug.cfs_rq:/.util_avg.max
72.80 ± 7% +415.2% 375.03 ± 24% sched_debug.cfs_rq:/.util_est.avg
1007 ± 12% +25.3% 1262 ± 7% sched_debug.cfs_rq:/.util_est.max
161.26 ± 7% +55.3% 250.42 ± 24% sched_debug.cfs_rq:/.util_est.stddev
585635 ± 13% +70.8% 1000253 ± 11% sched_debug.cpu.avg_idle.max
7853 ± 8% -59.3% 3197 ± 5% sched_debug.cpu.avg_idle.min
94982 ± 10% +49.7% 142227 ± 6% sched_debug.cpu.avg_idle.stddev
4964 ± 11% -45.9% 2684 ± 17% sched_debug.cpu.curr->pid.avg
36043 -65.5% 12443 ± 54% sched_debug.cpu.curr->pid.max
11755 ± 4% -74.0% 3057 ± 74% sched_debug.cpu.curr->pid.stddev
0.27 ± 7% +129.8% 0.61 ± 17% sched_debug.cpu.nr_running.avg
2.92 ± 11% -31.4% 2.00 ± 14% sched_debug.cpu.nr_running.max
2181080 +131.7% 5053532 ± 19% sched_debug.cpu.nr_switches.avg
2655743 +132.5% 6174297 ± 3% sched_debug.cpu.nr_switches.max
590551 ± 17% +325.9% 2515328 ± 53% sched_debug.cpu.nr_switches.min
***************************************************************************************************
lkp-gnr-2sp3: 256 threads 2 sockets Intel(R) Xeon(R) 6767P CPU @ 2.4GHz (Granite Rapids) with 256G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-12/performance/x86_64-rhel-9.4/100%/debian-12-x86_64-20240206.cgz/lkp-gnr-2sp3/nanosleep/stress-ng/60s
commit:
v6.15-rc5
4a9f46a472 ("acpi: convert strncpy into strscpy")
v6.15-rc5 4a9f46a472591e7ffd0e9c5d8cd
---------------- ---------------------------
%stddev %change %stddev
\ | \
8.024e+09 ± 3% -100.0% 0.00 cpuidle..time
5.73e+08 ± 11% -100.0% 0.00 cpuidle..usage
5496607 ± 2% -10.7% 4906416 ± 2% numa-numastat.node1.local_node
5662628 ± 3% -10.8% 5052140 ± 2% numa-numastat.node1.numa_hit
291680 ± 3% -17.4% 240862 ± 6% numa-meminfo.node0.SUnreclaim
255763 ± 4% -16.0% 214915 ± 6% numa-meminfo.node1.SUnreclaim
13778965 ± 2% -10.7% 12305910 ± 2% numa-meminfo.node1.Shmem
36.41 ± 8% -51.2% 17.78 ± 2% vmstat.cpu.id
280.33 ± 11% +115.8% 604.80 vmstat.procs.r
12822190 ± 7% -54.9% 5782167 vmstat.system.in
370.77 ± 79% +198.2% 1105 ± 8% perf-c2c.DRAM.local
5844 ± 7% +25.8% 7349 ± 4% perf-c2c.DRAM.remote
302352 ± 3% -24.5% 228196 perf-c2c.HITM.local
306707 ± 3% -24.0% 232964 perf-c2c.HITM.total
15387789 ± 3% -9.7% 13890052 meminfo.Active
15387789 ± 3% -9.7% 13890052 meminfo.Active(anon)
547403 -16.7% 455722 meminfo.SUnreclaim
13989353 ± 3% -10.6% 12513459 meminfo.Shmem
740264 -13.2% 642211 meminfo.Slab
34.31 ± 9% -19.3 15.03 ± 2% mpstat.cpu.all.idle%
49.08 +8.1 57.22 mpstat.cpu.all.irq%
0.15 ± 18% +0.2 0.37 ± 2% mpstat.cpu.all.soft%
10.51 ± 19% +9.3 19.84 mpstat.cpu.all.sys%
82.11 +13.6% 93.31 mpstat.max_utilization_pct
72917 ± 3% -17.4% 60209 ± 6% numa-vmstat.node0.nr_slab_unreclaimable
3448051 ± 2% -10.8% 3076253 ± 2% numa-vmstat.node1.nr_shmem
63938 ± 4% -16.0% 53717 ± 6% numa-vmstat.node1.nr_slab_unreclaimable
5662986 ± 3% -10.8% 5052416 ± 2% numa-vmstat.node1.numa_hit
5496964 ± 2% -10.7% 4906693 ± 2% numa-vmstat.node1.numa_local
63477 ± 6% +60.5% 101863 stress-ng.nanosleep.nanosec_sleep_overrun
44977307 ± 3% +23.8% 55676879 stress-ng.nanosleep.ops
749576 ± 3% +23.8% 927912 stress-ng.nanosleep.ops_per_sec
12275219 ± 9% +150.4% 30741095 stress-ng.time.involuntary_context_switches
220678 +1.3% 223451 stress-ng.time.minor_page_faults
6525 +3.4% 6746 stress-ng.time.percent_of_cpu_this_job_got
2584 ± 2% +15.7% 2990 stress-ng.time.system_time
1359 ± 2% -19.8% 1089 stress-ng.time.user_time
3847978 ± 3% -9.8% 3472571 proc-vmstat.nr_active_anon
350848 -1.8% 344375 proc-vmstat.nr_anon_pages
4383290 ± 2% -8.4% 4014428 proc-vmstat.nr_file_pages
3498391 ± 3% -10.5% 3129513 proc-vmstat.nr_shmem
48220 -3.3% 46626 proc-vmstat.nr_slab_reclaimable
136860 -16.7% 113939 proc-vmstat.nr_slab_unreclaimable
3847978 ± 3% -9.8% 3472571 proc-vmstat.nr_zone_active_anon
6157573 ± 2% -10.9% 5484244 proc-vmstat.numa_hit
5893718 ± 3% -11.4% 5220452 proc-vmstat.numa_local
6454012 ± 2% -10.3% 5788637 proc-vmstat.pgalloc_normal
946345 ± 5% -17.0% 785728 ± 5% proc-vmstat.pgfault
21653 ± 4% -40.5% 12881 ± 4% proc-vmstat.pgreuse
0.25 ± 11% +62.5% 0.41 ± 2% perf-stat.i.MPKI
1.43 ± 4% +0.4 1.85 perf-stat.i.branch-miss-rate%
7.159e+08 +27.3% 9.113e+08 perf-stat.i.branch-misses
61844201 ± 6% +54.8% 95712375 ± 2% perf-stat.i.cache-misses
5.265e+09 ± 4% +34.7% 7.091e+09 perf-stat.i.cache-references
2.84 ± 5% +25.6% 3.57 perf-stat.i.cpi
7.337e+11 +21.7% 8.93e+11 perf-stat.i.cpu-cycles
15128294 ± 4% -20.6% 12012304 perf-stat.i.cpu-migrations
14582 ± 7% -32.3% 9871 ± 2% perf-stat.i.cycles-between-cache-misses
0.38 ± 5% -19.6% 0.31 ± 2% perf-stat.i.ipc
166.24 ± 5% -17.9% 136.55 perf-stat.i.metric.K/sec
10825 ± 7% -15.6% 9141 ± 7% perf-stat.i.minor-faults
10825 ± 7% -15.6% 9141 ± 7% perf-stat.i.page-faults
0.22 ± 11% +60.5% 0.35 ± 2% perf-stat.overall.MPKI
1.28 ± 4% +0.4 1.67 perf-stat.overall.branch-miss-rate%
1.18 ± 2% +0.2 1.35 ± 2% perf-stat.overall.cache-miss-rate%
2.61 ± 6% +26.5% 3.30 perf-stat.overall.cpi
11885 ± 4% -21.5% 9332 ± 2% perf-stat.overall.cycles-between-cache-misses
0.39 ± 5% -21.2% 0.30 perf-stat.overall.ipc
7.042e+08 +27.3% 8.964e+08 perf-stat.ps.branch-misses
60903975 ± 6% +54.6% 94180370 ± 2% perf-stat.ps.cache-misses
5.179e+09 ± 4% +34.7% 6.975e+09 perf-stat.ps.cache-references
7.218e+11 +21.7% 8.785e+11 perf-stat.ps.cpu-cycles
14879980 ± 4% -20.6% 11816383 perf-stat.ps.cpu-migrations
10630 ± 8% -15.4% 8990 ± 7% perf-stat.ps.minor-faults
10630 ± 8% -15.4% 8990 ± 7% perf-stat.ps.page-faults
1361488 ± 5% +28.1% 1743936 sched_debug.cfs_rq:/.avg_vruntime.avg
5955807 ± 14% +26.0% 7503578 ± 7% sched_debug.cfs_rq:/.avg_vruntime.max
1232820 ± 3% +19.5% 1472806 ± 2% sched_debug.cfs_rq:/.avg_vruntime.min
0.60 ± 10% +125.6% 1.36 ± 6% sched_debug.cfs_rq:/.h_nr_queued.avg
0.83 ± 12% +68.1% 1.40 ± 6% sched_debug.cfs_rq:/.h_nr_queued.stddev
0.53 ± 12% +146.6% 1.31 ± 6% sched_debug.cfs_rq:/.h_nr_runnable.avg
0.73 ± 13% +89.2% 1.39 ± 6% sched_debug.cfs_rq:/.h_nr_runnable.stddev
363369 ± 9% +31.7% 478423 ± 5% sched_debug.cfs_rq:/.left_deadline.avg
363289 ± 9% +31.7% 478341 ± 5% sched_debug.cfs_rq:/.left_vruntime.avg
13.19 ± 26% -52.6% 6.25 ± 8% sched_debug.cfs_rq:/.load_avg.avg
525.38 -65.1% 183.50 ± 62% sched_debug.cfs_rq:/.load_avg.max
60.90 ± 25% -75.2% 15.10 ± 41% sched_debug.cfs_rq:/.load_avg.stddev
1361488 ± 5% +28.1% 1743936 sched_debug.cfs_rq:/.min_vruntime.avg
5955807 ± 14% +26.0% 7503578 ± 7% sched_debug.cfs_rq:/.min_vruntime.max
1232820 ± 3% +19.5% 1472806 ± 2% sched_debug.cfs_rq:/.min_vruntime.min
0.31 ± 3% +33.2% 0.41 ± 3% sched_debug.cfs_rq:/.nr_queued.avg
0.33 ± 4% -18.4% 0.27 ± 5% sched_debug.cfs_rq:/.nr_queued.stddev
7.35 ± 50% -98.0% 0.15 ±346% sched_debug.cfs_rq:/.removed.load_avg.avg
511.38 -92.6% 37.88 ±346% sched_debug.cfs_rq:/.removed.load_avg.max
58.58 ± 26% -96.0% 2.36 ±346% sched_debug.cfs_rq:/.removed.load_avg.stddev
3.56 ± 53% -96.6% 0.12 ±346% sched_debug.cfs_rq:/.removed.runnable_avg.avg
28.44 ± 29% -93.1% 1.96 ±346% sched_debug.cfs_rq:/.removed.runnable_avg.stddev
3.56 ± 53% -96.6% 0.12 ±346% sched_debug.cfs_rq:/.removed.util_avg.avg
28.44 ± 29% -93.2% 1.95 ±346% sched_debug.cfs_rq:/.removed.util_avg.stddev
363289 ± 9% +31.7% 478341 ± 5% sched_debug.cfs_rq:/.right_vruntime.avg
257.62 ± 14% +322.5% 1088 ± 2% sched_debug.cfs_rq:/.runnable_avg.avg
946.38 ± 2% +160.5% 2465 ± 9% sched_debug.cfs_rq:/.runnable_avg.max
173.27 ± 10% +196.4% 513.58 sched_debug.cfs_rq:/.runnable_avg.min
114.87 ± 23% +137.8% 273.14 ± 5% sched_debug.cfs_rq:/.runnable_avg.stddev
235.05 ± 4% +22.8% 288.57 sched_debug.cfs_rq:/.util_avg.avg
104.92 ± 7% -12.0% 92.36 ± 4% sched_debug.cfs_rq:/.util_avg.stddev
8.93 ± 19% +1910.0% 179.43 ± 9% sched_debug.cfs_rq:/.util_est.avg
802.77 ± 13% +103.2% 1631 ± 20% sched_debug.cfs_rq:/.util_est.max
56.48 ± 19% +293.2% 222.08 ± 6% sched_debug.cfs_rq:/.util_est.stddev
22.54 ± 3% +26.3% 28.46 ± 3% sched_debug.cpu.clock.stddev
7188 -12.0% 6328 ± 3% sched_debug.cpu.curr->pid.max
2102 ± 3% -18.0% 1724 sched_debug.cpu.curr->pid.stddev
0.00 ± 3% +32.4% 0.00 ± 3% sched_debug.cpu.next_balance.stddev
0.56 ± 13% +131.1% 1.29 ± 6% sched_debug.cpu.nr_running.avg
0.82 ± 14% +62.1% 1.33 ± 7% sched_debug.cpu.nr_running.stddev
3679769 ± 2% -18.2% 3011353 sched_debug.cpu.nr_switches.max
***************************************************************************************************
lkp-srf-2sp3: 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-12/performance/x86_64-rhel-9.4/100%/debian-12-x86_64-20240206.cgz/lkp-srf-2sp3/nanosleep/stress-ng/60s
commit:
v6.15-rc5
4a9f46a472 ("acpi: convert strncpy into strscpy")
v6.15-rc5 4a9f46a472591e7ffd0e9c5d8cd
---------------- ---------------------------
%stddev %change %stddev
\ | \
20.29 -5.2% 19.23 boot-time.dhcp
7.335e+09 -100.0% 0.00 cpuidle..time
3.421e+08 -100.0% 0.00 cpuidle..usage
1262963 -10.1% 1135588 meminfo.Mapped
475531 -20.4% 378366 meminfo.SUnreclaim
643055 -15.8% 541287 meminfo.Slab
24796 +318.7% 103826 ± 42% numa-numastat.node0.other_node
4890571 -12.8% 4263195 ± 8% numa-numastat.node1.numa_hit
173010 -45.7% 94003 ± 46% numa-numastat.node1.other_node
45.67 -42.2% 26.41 ± 4% vmstat.cpu.id
201.24 +69.8% 341.72 ± 2% vmstat.procs.r
17944140 +75.1% 31420986 ± 7% vmstat.system.cs
7977950 +20.0% 9571654 ± 8% vmstat.system.in
44.78 -19.8 24.95 ± 6% mpstat.cpu.all.idle%
34.90 +9.1 43.96 ± 2% mpstat.cpu.all.irq%
0.11 +0.0 0.15 ± 8% mpstat.cpu.all.soft%
12.22 +7.3 19.50 ± 2% mpstat.cpu.all.sys%
8.00 +3.5 11.46 ± 3% mpstat.cpu.all.usr%
66.86 +34.9% 90.21 ± 2% mpstat.max_utilization_pct
28236 +12.1% 31643 ± 6% numa-meminfo.node0.KernelStack
78589 +120.3% 173093 ± 44% numa-meminfo.node0.Mapped
252579 -16.0% 212085 ± 2% numa-meminfo.node0.SUnreclaim
5630 +2952.3% 171845 ± 63% numa-meminfo.node0.Shmem
340274 -15.3% 288246 ± 12% numa-meminfo.node0.Slab
30790 -10.2% 27655 ± 7% numa-meminfo.node1.KernelStack
1187307 -18.8% 964213 ± 6% numa-meminfo.node1.Mapped
222896 -25.4% 166281 ± 3% numa-meminfo.node1.SUnreclaim
15.55 +9.1e+06% 1415677 ±116% numa-meminfo.node1.Unevictable
317041 -10.2% 284725 proc-vmstat.nr_mapped
8595 +3.3% 8882 proc-vmstat.nr_page_table_pages
41884 -2.7% 40737 proc-vmstat.nr_slab_reclaimable
118869 -20.4% 94588 proc-vmstat.nr_slab_unreclaimable
216343 -22.6% 167393 ± 21% proc-vmstat.numa_hint_faults
212807 -22.9% 164083 ± 22% proc-vmstat.numa_hint_faults_local
747646 -23.0% 575328 ± 6% proc-vmstat.pgfault
690042 -17.9% 566229 ± 6% proc-vmstat.pgfree
18242 -41.5% 10679 proc-vmstat.pgreuse
66136 -17.8% 54373 ± 6% stress-ng.nanosleep.nanosec_sleep_overrun
32942741 +115.3% 70918788 ± 4% stress-ng.nanosleep.ops
549017 +115.3% 1181944 ± 4% stress-ng.nanosleep.ops_per_sec
7441350 +210.9% 23136625 ± 12% stress-ng.time.involuntary_context_switches
87380 +1.3% 88520 stress-ng.time.minor_page_faults
3996 +85.1% 7396 ± 7% stress-ng.time.percent_of_cpu_this_job_got
1488 +93.1% 2875 ± 6% stress-ng.time.system_time
917.88 +72.3% 1581 ± 7% stress-ng.time.user_time
7.582e+08 +77.7% 1.347e+09 ± 4% stress-ng.time.voluntary_context_switches
28240 +11.7% 31548 ± 6% numa-vmstat.node0.nr_kernel_stack
19908 +116.2% 43037 ± 43% numa-vmstat.node0.nr_mapped
1409 +2921.1% 42588 ± 63% numa-vmstat.node0.nr_shmem
63145 -16.0% 53015 ± 2% numa-vmstat.node0.nr_slab_unreclaimable
24796 +318.7% 103826 ± 42% numa-vmstat.node0.numa_other
30790 -10.4% 27580 ± 7% numa-vmstat.node1.nr_kernel_stack
298168 -18.8% 242086 ± 6% numa-vmstat.node1.nr_mapped
55724 -25.4% 41568 ± 3% numa-vmstat.node1.nr_slab_unreclaimable
3.89 +9.1e+06% 353919 ±116% numa-vmstat.node1.nr_unevictable
3.89 +9.1e+06% 353919 ±116% numa-vmstat.node1.nr_zone_unevictable
4890208 -12.8% 4262653 ± 8% numa-vmstat.node1.numa_hit
173010 -45.7% 94003 ± 46% numa-vmstat.node1.numa_other
0.29 -2.9% 0.29 perf-stat.i.MPKI
3.94e+10 +54.8% 6.101e+10 ± 4% perf-stat.i.branch-instructions
1.47 -0.1 1.36 ± 4% perf-stat.i.branch-miss-rate%
4.897e+08 +50.5% 7.371e+08 perf-stat.i.branch-misses
2.66 +0.2 2.85 ± 2% perf-stat.i.cache-miss-rate%
54650523 +44.1% 78748562 ± 6% perf-stat.i.cache-misses
2.506e+09 +32.6% 3.323e+09 perf-stat.i.cache-references
18553998 +75.0% 32467273 ± 7% perf-stat.i.context-switches
2.42 -17.7% 1.99 ± 2% perf-stat.i.cpi
4.091e+11 +34.7% 5.511e+11 ± 2% perf-stat.i.cpu-cycles
10138720 +79.7% 18216803 ± 9% perf-stat.i.cpu-migrations
9070 -16.0% 7620 ± 5% perf-stat.i.cycles-between-cache-misses
1.948e+11 +55.3% 3.025e+11 ± 4% perf-stat.i.instructions
0.47 +17.2% 0.55 perf-stat.i.ipc
149.44 +76.7% 264.00 ± 8% perf-stat.i.metric.K/sec
9609 -18.9% 7792 ± 7% perf-stat.i.minor-faults
9609 -18.9% 7792 ± 7% perf-stat.i.page-faults
0.28 -7.3% 0.26 ± 2% perf-stat.overall.MPKI
2.18 +0.2 2.37 ± 6% perf-stat.overall.cache-miss-rate%
2.10 -13.2% 1.82 ± 2% perf-stat.overall.cpi
7483 -6.3% 7014 ± 4% perf-stat.overall.cycles-between-cache-misses
0.48 +15.3% 0.55 ± 2% perf-stat.overall.ipc
3.878e+10 +54.9% 6.007e+10 ± 4% perf-stat.ps.branch-instructions
4.817e+08 +50.5% 7.25e+08 perf-stat.ps.branch-misses
53781450 +44.1% 77524937 ± 6% perf-stat.ps.cache-misses
2.466e+09 +32.6% 3.269e+09 perf-stat.ps.cache-references
18252323 +75.0% 31933413 ± 7% perf-stat.ps.context-switches
4.025e+11 +34.7% 5.422e+11 ± 2% perf-stat.ps.cpu-cycles
9974053 +79.6% 17916841 ± 9% perf-stat.ps.cpu-migrations
1.917e+11 +55.4% 2.978e+11 ± 4% perf-stat.ps.instructions
9443 -18.8% 7663 ± 7% perf-stat.ps.minor-faults
9443 -18.8% 7663 ± 7% perf-stat.ps.page-faults
1.18e+13 +55.3% 1.833e+13 ± 4% perf-stat.total.instructions
662859 +178.2% 1844033 ± 8% sched_debug.cfs_rq:/.avg_vruntime.avg
3155866 +94.4% 6133730 ± 2% sched_debug.cfs_rq:/.avg_vruntime.max
509569 +218.9% 1624879 ± 5% sched_debug.cfs_rq:/.avg_vruntime.min
219206 +76.6% 387056 ± 3% sched_debug.cfs_rq:/.avg_vruntime.stddev
0.64 +59.8% 1.02 ± 13% sched_debug.cfs_rq:/.h_nr_queued.avg
8.00 -40.0% 4.80 ± 14% sched_debug.cfs_rq:/.h_nr_queued.max
0.57 +50.0% 0.86 ± 16% sched_debug.cfs_rq:/.h_nr_runnable.avg
8.00 -41.2% 4.70 ± 10% sched_debug.cfs_rq:/.h_nr_runnable.max
119579 +285.9% 461420 ± 6% sched_debug.cfs_rq:/.left_deadline.avg
701402 +556.6% 4605499 ± 42% sched_debug.cfs_rq:/.left_deadline.max
245694 +241.9% 839983 ± 7% sched_debug.cfs_rq:/.left_deadline.stddev
119546 +285.9% 461364 ± 6% sched_debug.cfs_rq:/.left_vruntime.avg
701163 +556.8% 4605228 ± 42% sched_debug.cfs_rq:/.left_vruntime.max
245628 +241.9% 839885 ± 7% sched_debug.cfs_rq:/.left_vruntime.stddev
57782 -46.4% 30982 ± 12% sched_debug.cfs_rq:/.load.max
7422 -32.2% 5029 ± 10% sched_debug.cfs_rq:/.load.stddev
43.69 -59.6% 17.67 ± 20% sched_debug.cfs_rq:/.load_avg.avg
2.00 -25.0% 1.50 sched_debug.cfs_rq:/.load_avg.min
131.02 -51.1% 64.07 ± 26% sched_debug.cfs_rq:/.load_avg.stddev
662859 +178.2% 1844033 ± 8% sched_debug.cfs_rq:/.min_vruntime.avg
3155866 +94.4% 6133730 ± 2% sched_debug.cfs_rq:/.min_vruntime.max
509569 +218.9% 1624879 ± 5% sched_debug.cfs_rq:/.min_vruntime.min
219206 +76.6% 387056 ± 3% sched_debug.cfs_rq:/.min_vruntime.stddev
0.28 +41.3% 0.39 ± 3% sched_debug.cfs_rq:/.nr_queued.avg
34.26 -79.9% 6.90 ± 53% sched_debug.cfs_rq:/.removed.load_avg.avg
127.21 -60.3% 50.55 ± 51% sched_debug.cfs_rq:/.removed.load_avg.stddev
14.75 -79.8% 2.98 ± 53% sched_debug.cfs_rq:/.removed.runnable_avg.avg
56.08 -59.9% 22.49 ± 51% sched_debug.cfs_rq:/.removed.runnable_avg.stddev
14.75 -79.8% 2.98 ± 53% sched_debug.cfs_rq:/.removed.util_avg.avg
56.08 -59.9% 22.49 ± 51% sched_debug.cfs_rq:/.removed.util_avg.stddev
119546 +285.9% 461364 ± 6% sched_debug.cfs_rq:/.right_vruntime.avg
701163 +556.8% 4605228 ± 42% sched_debug.cfs_rq:/.right_vruntime.max
245628 +241.9% 839885 ± 7% sched_debug.cfs_rq:/.right_vruntime.stddev
255.64 +76.6% 451.41 ± 12% sched_debug.cfs_rq:/.runnable_avg.avg
127.50 +98.1% 252.60 ± 16% sched_debug.cfs_rq:/.runnable_avg.min
228.34 +54.8% 353.49 ± 5% sched_debug.cfs_rq:/.util_avg.avg
117.50 +104.7% 240.50 ± 17% sched_debug.cfs_rq:/.util_avg.min
11.37 +29.9% 14.77 ± 15% sched_debug.cfs_rq:/.util_est.avg
6599 -51.0% 3236 ± 6% sched_debug.cpu.avg_idle.min
1003 +34.0% 1344 ± 6% sched_debug.cpu.curr->pid.avg
5836 -9.8% 5267 sched_debug.cpu.curr->pid.max
1661 -10.8% 1482 ± 2% sched_debug.cpu.curr->pid.stddev
0.00 +14.5% 0.00 ± 5% sched_debug.cpu.next_balance.stddev
0.54 +71.4% 0.93 ± 11% sched_debug.cpu.nr_running.avg
8.50 -44.7% 4.70 ± 15% sched_debug.cpu.nr_running.max
2891369 +74.8% 5054237 ± 7% sched_debug.cpu.nr_switches.avg
3315998 +69.9% 5635000 sched_debug.cpu.nr_switches.max
1451647 +82.7% 2651528 ± 5% sched_debug.cpu.nr_switches.min
0.01 -53.3% 0.00 ± 57% sched_debug.cpu.nr_uninterruptible.avg
206.00 -43.6% 116.20 ± 45% sched_debug.cpu.nr_uninterruptible.max
24.50 -36.5% 15.54 ± 35% 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
