[brauner-vfs:vfs-6.14.misc] [pipe_read] aaec5a95d5: hackbench.throughput 7.5% regression

kernel test robot
2025-01-10T03:10:54Z

Hello,

kernel test robot noticed a 7.5% regression of hackbench.throughput on:

commit: aaec5a95d59615523db03dd53c2052f0a87beea7 ("pipe_read: don't wake up the writer if the pipe is still full")
https://git.kernel.org/cgit/linux/kernel/git/vfs/vfs.git vfs-6.14.misc

[test failed on linux-next/master 4b90165c7d1173e0f65538d25aa718ec7ecdd5d6]

testcase: hackbench
config: x86_64-rhel-9.4
compiler: gcc-12
test machine: 128 threads 2 sockets Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz (Ice Lake) with 256G memory
parameters:

nr_threads: 50%
iterations: 4
mode: process
ipc: pipe
cpufreq_governor: performance

In addition to that, the commit also has significant impact on the following tests:

+------------------+-------------------------------------------------------------------------------------------+
| testcase: change | stress-ng: stress-ng.tee.ops_per_sec 500.7% improvement |
| test machine | 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory |
| test parameters | cpufreq_governor=performance |
| | nr_threads=100% |
| | test=tee |
| | 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/202501101015.90874b3a-lkp@intel.com

Details are as below:
-------------------------------------------------------------------------------------------------->

The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250110/202501101015.90874b3a-lkp@intel.com

=========================================================================================
compiler/cpufreq_governor/ipc/iterations/kconfig/mode/nr_threads/rootfs/tbox_group/testcase:
gcc-12/performance/pipe/4/x86_64-rhel-9.4/process/50%/debian-12-x86_64-20240206.cgz/lkp-icl-2sp2/hackbench

commit:
d2fc0ed52a ("Merge branch 'vfs-6.14.uncached_buffered_io'")
aaec5a95d5 ("pipe_read: don't wake up the writer if the pipe is still full")

d2fc0ed52a284a13 aaec5a95d59615523db03dd53c2
---------------- ---------------------------
%stddev %change %stddev
\ | \
0.04 ± 2% -0.0 0.03 ± 6% mpstat.cpu.all.soft%
13470 ± 44% +47.4% 19860 ± 22% numa-vmstat.node1.nr_slab_reclaimable
53825 ± 44% +47.6% 79444 ± 22% numa-meminfo.node1.KReclaimable
53825 ± 44% +47.6% 79444 ± 22% numa-meminfo.node1.SReclaimable
1423 -14.8% 1212 ± 2% vmstat.procs.r
1419871 ± 3% +22.4% 1737760 ± 2% vmstat.system.in
28551 ± 13% -37.8% 17760 ± 8% perf-c2c.DRAM.remote
122888 ± 7% +55.5% 191041 ± 2% perf-c2c.HITM.local
4310 ± 13% -20.0% 3448 ± 9% perf-c2c.HITM.remote
127198 ± 7% +52.9% 194489 ± 2% perf-c2c.HITM.total
903976 -7.5% 836425 hackbench.throughput
866824 -7.6% 801128 hackbench.throughput_avg
903976 -7.5% 836425 hackbench.throughput_best
785145 -6.8% 731474 hackbench.throughput_worst
69.85 +8.1% 75.53 hackbench.time.elapsed_time
69.85 +8.1% 75.53 hackbench.time.elapsed_time.max
1.986e+08 +22.1% 2.424e+08 hackbench.time.involuntary_context_switches
7559 +9.7% 8296 hackbench.time.system_time
985.62 +4.1% 1026 hackbench.time.user_time
6.06 ± 4% -16.2% 5.08 ± 2% sched_debug.cfs_rq:/.h_nr_running.avg
14.20 ± 13% -19.0% 11.50 ± 4% sched_debug.cfs_rq:/.h_nr_running.max
3.32 ± 3% -18.4% 2.71 ± 2% sched_debug.cfs_rq:/.h_nr_running.stddev
5996 ± 2% +34.3% 8054 ± 23% sched_debug.cfs_rq:/.load.avg
24211 ± 8% +1091.3% 288431 ± 88% sched_debug.cfs_rq:/.load.max
4439 ± 3% +504.9% 26851 ± 81% sched_debug.cfs_rq:/.load.stddev
1.00 ± 54% +83.3% 1.83 ± 12% sched_debug.cfs_rq:/.load_avg.min
6203 ± 2% -15.4% 5246 ± 2% sched_debug.cfs_rq:/.runnable_avg.avg
1886 ± 7% -22.5% 1461 ± 7% sched_debug.cfs_rq:/.runnable_avg.stddev
151.50 ± 28% +55.7% 235.83 ± 11% sched_debug.cfs_rq:/.util_avg.min
667.32 ± 3% -21.3% 525.24 ± 8% sched_debug.cfs_rq:/.util_est.avg
6.06 ± 4% -16.1% 5.09 ± 2% sched_debug.cpu.nr_running.avg
14.20 ± 13% -19.0% 11.50 ± 4% sched_debug.cpu.nr_running.max
3.30 ± 4% -18.7% 2.68 ± 2% sched_debug.cpu.nr_running.stddev
130727 ± 33% -46.7% 69684 ± 27% sched_debug.cpu.nr_switches.stddev
6.98 ± 11% -2.4 4.61 ± 24% perf-profile.calltrace.cycles-pp.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write.do_syscall_64
6.98 ± 11% -2.4 4.61 ± 24% perf-profile.calltrace.cycles-pp.shmem_file_write_iter.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
6.67 ± 11% -2.1 4.61 ± 24% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write.writen.record__pushfn
6.67 ± 11% -2.1 4.61 ± 24% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write.writen.record__pushfn.perf_mmap__push
6.67 ± 11% -2.1 4.61 ± 24% perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write.writen
3.02 ± 44% -1.9 1.09 ± 47% perf-profile.calltrace.cycles-pp.link_path_walk.path_lookupat.filename_lookup.vfs_statx.vfs_fstatat
6.67 ± 11% -1.8 4.86 ± 17% perf-profile.calltrace.cycles-pp.record__pushfn.perf_mmap__push.record__mmap_read_evlist.__cmd_record.cmd_record
6.67 ± 11% -1.8 4.86 ± 17% perf-profile.calltrace.cycles-pp.write.writen.record__pushfn.perf_mmap__push.record__mmap_read_evlist
6.67 ± 11% -1.8 4.86 ± 17% perf-profile.calltrace.cycles-pp.writen.record__pushfn.perf_mmap__push.record__mmap_read_evlist.__cmd_record
2.72 ± 21% -1.2 1.50 ± 57% perf-profile.calltrace.cycles-pp.fault_in_iov_iter_readable.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
1.17 ±122% +2.5 3.65 ± 43% perf-profile.calltrace.cycles-pp.do_pte_missing.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
1.81 ± 62% +2.8 4.59 ± 21% perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat
1.52 ± 65% +3.1 4.63 ± 39% perf-profile.calltrace.cycles-pp.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.52 ± 65% +3.1 4.63 ± 39% perf-profile.calltrace.cycles-pp.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe
6.98 ± 11% -2.4 4.61 ± 24% perf-profile.children.cycles-pp.generic_perform_write
6.98 ± 11% -2.4 4.61 ± 24% perf-profile.children.cycles-pp.shmem_file_write_iter
3.93 ± 39% -2.2 1.75 ± 66% perf-profile.children.cycles-pp.mutex_unlock
6.67 ± 11% -1.8 4.86 ± 17% perf-profile.children.cycles-pp.record__pushfn
6.67 ± 11% -1.4 5.30 ± 11% perf-profile.children.cycles-pp.writen
2.72 ± 21% -1.2 1.50 ± 57% perf-profile.children.cycles-pp.fault_in_iov_iter_readable
2.72 ± 21% -1.2 1.50 ± 57% perf-profile.children.cycles-pp.fault_in_readable
1.17 ±122% +2.5 3.65 ± 43% perf-profile.children.cycles-pp.do_pte_missing
6.169e+10 -6.4% 5.773e+10 perf-stat.i.branch-instructions
2.704e+08 -3.6% 2.607e+08 perf-stat.i.branch-misses
13.54 ± 10% -4.4 9.18 ± 2% perf-stat.i.cache-miss-rate%
1.343e+09 ± 9% +40.2% 1.883e+09 ± 3% perf-stat.i.cache-references
12981250 ± 2% -2.9% 12601747 perf-stat.i.context-switches
1.18 +7.0% 1.26 perf-stat.i.cpi
656622 ± 3% +43.2% 940118 perf-stat.i.cpu-migrations
2.674e+11 -6.3% 2.506e+11 perf-stat.i.instructions
0.85 -6.3% 0.80 perf-stat.i.ipc
13648 ± 2% -7.1% 12676 ± 3% perf-stat.i.minor-faults
13650 ± 2% -7.1% 12677 ± 3% perf-stat.i.page-faults
0.44 +0.0 0.45 perf-stat.overall.branch-miss-rate%
13.19 ± 10% -4.3 8.94 ± 3% perf-stat.overall.cache-miss-rate%
1.18 +7.3% 1.26 perf-stat.overall.cpi
0.85 -6.8% 0.79 perf-stat.overall.ipc
6.089e+10 -6.3% 5.703e+10 perf-stat.ps.branch-instructions
2.666e+08 -3.5% 2.572e+08 perf-stat.ps.branch-misses
1.324e+09 ± 9% +40.3% 1.858e+09 ± 3% perf-stat.ps.cache-references
12791040 ± 2% -2.8% 12432936 perf-stat.ps.context-switches
646715 ± 3% +43.3% 926916 perf-stat.ps.cpu-migrations
2.64e+11 -6.2% 2.476e+11 perf-stat.ps.instructions
13461 ± 2% -7.7% 12426 ± 3% perf-stat.ps.minor-faults
13463 ± 2% -7.7% 12427 ± 3% perf-stat.ps.page-faults
3.22 ± 92% +235.4% 10.78 ± 42% perf-sched.sch_delay.avg.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.pipe_write.vfs_write
0.24 ±100% -84.4% 0.04 ±102% perf-sched.sch_delay.avg.ms.__cond_resched.__kmalloc_cache_noprof.perf_event_mmap_event.perf_event_mmap.__mmap_region
0.08 ± 90% -88.4% 0.01 ±112% perf-sched.sch_delay.avg.ms.__cond_resched.__tlb_batch_free_encoded_pages.tlb_finish_mmu.relocate_vma_down.setup_arg_pages
10.19 ±196% -99.8% 0.02 ±134% perf-sched.sch_delay.avg.ms.__cond_resched.change_pud_range.isra.0.change_protection_range
2.47 ±196% -99.8% 0.00 ±223% perf-sched.sch_delay.avg.ms.__cond_resched.down_read.open_last_lookups.path_openat.do_filp_open
0.10 ± 45% -83.6% 0.02 ±153% perf-sched.sch_delay.avg.ms.__cond_resched.exit_mmap.__mmput.exit_mm.do_exit
0.09 ± 86% -92.9% 0.01 ±172% perf-sched.sch_delay.avg.ms.__cond_resched.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.__split_vma
7.03 ± 19% +243.1% 24.13 ± 13% perf-sched.sch_delay.avg.ms.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write
5.62 ±195% -99.6% 0.02 ± 92% perf-sched.sch_delay.avg.ms.__cond_resched.put_files_struct.do_exit.do_group_exit.__x64_sys_exit_group
15.78 ± 28% +338.0% 69.12 ± 19% perf-sched.sch_delay.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
0.99 ± 19% +59.4% 1.57 ± 12% perf-sched.sch_delay.avg.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
5.84 ± 20% +945.2% 61.00 ± 11% perf-sched.sch_delay.avg.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
15.78 ± 21% +208.2% 48.63 ± 11% perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pipe_write
12.67 ± 71% +452.9% 70.03 ± 81% perf-sched.sch_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
1.22 ± 17% +252.3% 4.30 ± 11% perf-sched.sch_delay.avg.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.12 ± 83% +577.2% 0.83 ± 61% perf-sched.sch_delay.avg.ms.wait_for_partner.fifo_open.do_dentry_open.vfs_open
0.20 ±104% -94.9% 0.01 ±115% perf-sched.sch_delay.max.ms.__cond_resched.__tlb_batch_free_encoded_pages.tlb_finish_mmu.relocate_vma_down.setup_arg_pages
20.36 ±196% -99.9% 0.02 ±129% perf-sched.sch_delay.max.ms.__cond_resched.change_pud_range.isra.0.change_protection_range
2.48 ±195% -99.7% 0.01 ±223% perf-sched.sch_delay.max.ms.__cond_resched.down_read.open_last_lookups.path_openat.do_filp_open
0.28 ± 88% -89.8% 0.03 ±148% perf-sched.sch_delay.max.ms.__cond_resched.exit_mmap.__mmput.exit_mm.do_exit
0.14 ±105% -95.5% 0.01 ±172% perf-sched.sch_delay.max.ms.__cond_resched.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.__split_vma
1095 ± 14% +118.2% 2389 ± 15% perf-sched.sch_delay.max.ms.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write
16.66 ±198% -99.7% 0.05 ±104% perf-sched.sch_delay.max.ms.__cond_resched.put_files_struct.do_exit.do_group_exit.__x64_sys_exit_group
797.45 ± 24% +149.6% 1990 ± 17% perf-sched.sch_delay.max.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
1768 ± 22% +94.8% 3445 ± 11% perf-sched.sch_delay.max.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
746.96 ± 15% +265.4% 2729 ± 21% perf-sched.sch_delay.max.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pipe_write
0.01 ± 15% -33.9% 0.01 ± 45% perf-sched.sch_delay.max.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
1716 ± 29% +121.7% 3804 ± 17% perf-sched.sch_delay.max.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.54 ±107% +338.8% 2.37 ± 51% perf-sched.sch_delay.max.ms.wait_for_partner.fifo_open.do_dentry_open.vfs_open
1.41 ± 19% +78.0% 2.51 ± 11% perf-sched.total_sch_delay.average.ms
2305 ± 20% +82.3% 4203 ± 11% perf-sched.total_sch_delay.max.ms
4.38 ± 18% +68.2% 7.37 ± 11% perf-sched.total_wait_and_delay.average.ms
4583511 ± 23% -32.5% 3091848 ± 17% perf-sched.total_wait_and_delay.count.ms
5607 ± 10% +48.2% 8309 ± 8% perf-sched.total_wait_and_delay.max.ms
2.97 ± 18% +63.5% 4.86 ± 11% perf-sched.total_wait_time.average.ms
5092 ± 4% +13.9% 5800 ± 6% perf-sched.total_wait_time.max.ms
11.10 ± 59% +210.8% 34.49 ± 24% perf-sched.wait_and_delay.avg.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.pipe_write.vfs_write
21.29 ± 17% +235.3% 71.40 ± 12% perf-sched.wait_and_delay.avg.ms.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write
110.43 ± 47% +250.5% 387.09 ± 45% perf-sched.wait_and_delay.avg.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
48.98 ± 24% +319.4% 205.43 ± 16% perf-sched.wait_and_delay.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
2.87 ± 19% +56.2% 4.48 ± 11% perf-sched.wait_and_delay.avg.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
19.17 ± 20% +835.0% 179.22 ± 10% perf-sched.wait_and_delay.avg.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
48.33 ± 24% +209.7% 149.70 ± 11% perf-sched.wait_and_delay.avg.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pipe_write
38.33 ± 45% +401.4% 192.16 ± 68% perf-sched.wait_and_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
3.58 ± 17% +253.9% 12.65 ± 11% perf-sched.wait_and_delay.avg.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
56.40 ± 39% -72.8% 15.33 ± 46% perf-sched.wait_and_delay.count.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
785.60 ± 53% -49.5% 396.83 ± 49% perf-sched.wait_and_delay.count.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown].[unknown]
356336 ± 23% -93.6% 22658 ± 16% perf-sched.wait_and_delay.count.pipe_write.vfs_write.ksys_write.do_syscall_64
203.40 ± 27% -71.1% 58.83 ± 63% perf-sched.wait_and_delay.count.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
779.32 ± 74% +132.5% 1812 ± 26% perf-sched.wait_and_delay.max.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.pipe_write.vfs_write
2209 ± 14% +116.3% 4779 ± 15% perf-sched.wait_and_delay.max.ms.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write
1679 ± 22% +139.3% 4019 ± 18% perf-sched.wait_and_delay.max.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
3543 ± 22% +98.8% 7042 ± 10% perf-sched.wait_and_delay.max.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
1595 ± 26% +243.1% 5471 ± 21% perf-sched.wait_and_delay.max.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pipe_write
5048 ± 4% +12.6% 5685 ± 6% perf-sched.wait_and_delay.max.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
4052 ± 22% +88.2% 7626 ± 17% perf-sched.wait_and_delay.max.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
7.88 ± 48% +200.8% 23.70 ± 26% perf-sched.wait_time.avg.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.pipe_write.vfs_write
0.24 ±100% -84.4% 0.04 ±102% perf-sched.wait_time.avg.ms.__cond_resched.__kmalloc_cache_noprof.perf_event_mmap_event.perf_event_mmap.__mmap_region
6.22 ± 65% +237.5% 21.00 ± 59% perf-sched.wait_time.avg.ms.__cond_resched.__mutex_lock.constprop.0.pipe_write
0.08 ± 90% -88.4% 0.01 ±112% perf-sched.wait_time.avg.ms.__cond_resched.__tlb_batch_free_encoded_pages.tlb_finish_mmu.relocate_vma_down.setup_arg_pages
18.06 ± 14% +43.8% 25.98 ± 15% perf-sched.wait_time.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
10.19 ±196% -99.8% 0.02 ±134% perf-sched.wait_time.avg.ms.__cond_resched.change_pud_range.isra.0.change_protection_range
2.47 ±196% -99.8% 0.00 ±223% perf-sched.wait_time.avg.ms.__cond_resched.down_read.open_last_lookups.path_openat.do_filp_open
0.10 ± 45% -83.5% 0.02 ±153% perf-sched.wait_time.avg.ms.__cond_resched.exit_mmap.__mmput.exit_mm.do_exit
0.09 ± 86% -92.9% 0.01 ±172% perf-sched.wait_time.avg.ms.__cond_resched.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.__split_vma
14.26 ± 16% +231.5% 47.27 ± 12% perf-sched.wait_time.avg.ms.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write
6.86 ±196% -99.6% 0.02 ± 92% perf-sched.wait_time.avg.ms.__cond_resched.put_files_struct.do_exit.do_group_exit.__x64_sys_exit_group
2.44 ± 44% +137.1% 5.78 ± 46% perf-sched.wait_time.avg.ms.__cond_resched.task_work_run.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe
33.20 ± 23% +310.5% 136.31 ± 16% perf-sched.wait_time.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
1.88 ± 19% +54.5% 2.91 ± 11% perf-sched.wait_time.avg.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
13.33 ± 21% +786.7% 118.22 ± 10% perf-sched.wait_time.avg.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
32.55 ± 25% +210.5% 101.07 ± 12% perf-sched.wait_time.avg.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pipe_write
25.66 ± 34% +375.9% 122.14 ± 60% perf-sched.wait_time.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
2.35 ± 18% +254.7% 8.35 ± 11% perf-sched.wait_time.avg.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.08 ± 84% +731.0% 0.70 ± 43% perf-sched.wait_time.avg.ms.wait_for_partner.fifo_open.do_dentry_open.vfs_open
502.86 ± 46% +115.0% 1081 ± 38% perf-sched.wait_time.max.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.pipe_write.vfs_write
188.34 ±175% -97.8% 4.23 ± 49% perf-sched.wait_time.max.ms.__cond_resched.__mutex_lock.constprop.0.pipe_read
0.20 ±104% -94.9% 0.01 ±115% perf-sched.wait_time.max.ms.__cond_resched.__tlb_batch_free_encoded_pages.tlb_finish_mmu.relocate_vma_down.setup_arg_pages
20.36 ±196% -99.9% 0.02 ±129% perf-sched.wait_time.max.ms.__cond_resched.change_pud_range.isra.0.change_protection_range
2.48 ±195% -99.7% 0.01 ±223% perf-sched.wait_time.max.ms.__cond_resched.down_read.open_last_lookups.path_openat.do_filp_open
0.28 ± 88% -89.8% 0.03 ±148% perf-sched.wait_time.max.ms.__cond_resched.exit_mmap.__mmput.exit_mm.do_exit
0.14 ±105% -95.5% 0.01 ±172% perf-sched.wait_time.max.ms.__cond_resched.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.__split_vma
1126 ± 15% +132.8% 2622 ± 13% perf-sched.wait_time.max.ms.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write
20.38 ±198% -99.8% 0.05 ±104% perf-sched.wait_time.max.ms.__cond_resched.put_files_struct.do_exit.do_group_exit.__x64_sys_exit_group
951.43 ± 18% +142.5% 2307 ± 15% perf-sched.wait_time.max.ms.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
1820 ± 24% +107.0% 3767 ± 7% perf-sched.wait_time.max.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
994.33 ± 39% +179.3% 2776 ± 19% perf-sched.wait_time.max.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pipe_write
921.59 ± 39% +70.0% 1566 ± 29% perf-sched.wait_time.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
5048 ± 4% +12.6% 5685 ± 6% perf-sched.wait_time.max.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
2400 ± 36% +64.8% 3954 ± 12% perf-sched.wait_time.max.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.42 ±103% +470.3% 2.37 ± 50% perf-sched.wait_time.max.ms.wait_for_partner.fifo_open.do_dentry_open.vfs_open

***************************************************************************************************
lkp-icl-2sp8: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) 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-icl-2sp8/tee/stress-ng/60s

commit:
d2fc0ed52a ("Merge branch 'vfs-6.14.uncached_buffered_io'")
aaec5a95d5 ("pipe_read: don't wake up the writer if the pipe is still full")

d2fc0ed52a284a13 aaec5a95d59615523db03dd53c2
---------------- ---------------------------
%stddev %change %stddev
\ | \
123346 ± 30% -48.2% 63936 ± 24% cpuidle..usage
11.44 +5.9 17.37 mpstat.cpu.all.usr%
1237 ± 32% -83.3% 206.40 ± 20% perf-c2c.DRAM.local
934.33 ± 7% +53.9% 1438 ± 10% perf-c2c.DRAM.remote
263.67 ± 11% +26.7% 334.00 ± 5% perf-c2c.HITM.remote
11.14 +51.4% 16.87 vmstat.cpu.us
22963300 -95.8% 968409 vmstat.system.cs
197683 -8.3% 181346 vmstat.system.in
5623585 ± 19% -55.7% 2490490 ± 19% numa-meminfo.node1.Active
5623585 ± 19% -55.7% 2490490 ± 19% numa-meminfo.node1.Active(anon)
1738706 ± 8% -70.3% 516074 ± 29% numa-meminfo.node1.Mapped
5336025 ± 20% -61.3% 2063073 ± 14% numa-meminfo.node1.Shmem
7701721 +79.2% 13801344 numa-numastat.node0.local_node
7732133 +79.0% 13842144 numa-numastat.node0.numa_hit
9660861 ± 4% +51.6% 14643708 numa-numastat.node1.local_node
9696676 ± 4% +51.3% 14669530 numa-numastat.node1.numa_hit
4203288 +500.7% 25250189 stress-ng.tee.ops
70053 +500.7% 420829 stress-ng.tee.ops_per_sec
7.264e+08 -96.5% 25607922 stress-ng.time.involuntary_context_switches
3392 -7.6% 3134 stress-ng.time.system_time
356.72 +78.5% 636.76 stress-ng.time.user_time
7.31e+08 -95.1% 35783971 stress-ng.time.voluntary_context_switches
7716552 +79.4% 13841559 numa-vmstat.node0.numa_hit
7686141 +79.6% 13800760 numa-vmstat.node0.numa_local
1403134 ± 19% -55.6% 622772 ± 19% numa-vmstat.node1.nr_active_anon
432841 ± 7% -69.9% 130433 ± 27% numa-vmstat.node1.nr_mapped
1331229 ± 19% -61.3% 515736 ± 14% numa-vmstat.node1.nr_shmem
1403134 ± 19% -55.6% 622771 ± 19% numa-vmstat.node1.nr_zone_active_anon
9682370 ± 3% +51.5% 14668660 numa-vmstat.node1.numa_hit
9646555 ± 4% +51.8% 14642837 numa-vmstat.node1.numa_local
6151580 ± 17% -51.1% 3005085 ± 4% meminfo.Active
6151580 ± 17% -51.1% 3005085 ± 4% meminfo.Active(anon)
8920705 ± 11% -35.0% 5794702 meminfo.Cached
7882102 ± 13% -40.6% 4678787 meminfo.Committed_AS
1893975 ± 6% -63.9% 682914 ± 24% meminfo.Mapped
11167190 ± 9% -28.6% 7968104 meminfo.Memused
27261 ± 2% -13.4% 23618 ± 6% meminfo.PageTables
5395896 ± 19% -57.9% 2269891 meminfo.Shmem
11232918 ± 9% -27.7% 8115848 meminfo.max_used_kB
0.55 ± 5% -24.7% 0.42 ± 4% sched_debug.cfs_rq:/.h_nr_running.stddev
267.15 ± 77% -71.5% 76.26 ± 16% sched_debug.cfs_rq:/.load_avg.avg
10410 ±122% -93.8% 641.30 ± 33% sched_debug.cfs_rq:/.load_avg.max
1371 ±112% -88.1% 163.88 ± 10% sched_debug.cfs_rq:/.load_avg.stddev
833.50 ± 23% +24.0% 1033 sched_debug.cfs_rq:/.runnable_avg.min
247.56 ± 10% -14.6% 211.50 ± 12% sched_debug.cfs_rq:/.runnable_avg.stddev
485.86 ± 5% +30.5% 633.96 ± 5% sched_debug.cfs_rq:/.util_est.avg
1085 ± 5% +16.3% 1262 ± 9% sched_debug.cfs_rq:/.util_est.max
173.70 ± 7% +36.8% 237.65 ± 6% sched_debug.cfs_rq:/.util_est.stddev
398375 ± 4% +12.5% 448175 ± 2% sched_debug.cpu.avg_idle.avg
176609 ± 11% +38.4% 244462 ± 5% sched_debug.cpu.avg_idle.stddev
0.55 ± 5% -22.3% 0.43 ± 3% sched_debug.cpu.nr_running.stddev
11181287 -95.8% 474442 sched_debug.cpu.nr_switches.avg
11740535 -95.7% 505782 ± 2% sched_debug.cpu.nr_switches.max
8593260 ± 5% -95.1% 424452 ± 4% sched_debug.cpu.nr_switches.min
569340 ± 10% -97.7% 12920 ± 14% sched_debug.cpu.nr_switches.stddev
1537988 ± 17% -51.2% 751031 ± 3% proc-vmstat.nr_active_anon
6276579 +1.3% 6356360 proc-vmstat.nr_dirty_background_threshold
12568504 +1.3% 12728261 proc-vmstat.nr_dirty_threshold
2230307 ± 11% -35.1% 1448223 proc-vmstat.nr_file_pages
63142546 +1.3% 63941500 proc-vmstat.nr_free_pages
472553 ± 6% -64.0% 170048 ± 22% proc-vmstat.nr_mapped
6828 ± 2% -13.2% 5929 ± 6% proc-vmstat.nr_page_table_pages
1349103 ± 19% -58.0% 567019 proc-vmstat.nr_shmem
26209 ± 2% -6.9% 24399 proc-vmstat.nr_slab_reclaimable
1537988 ± 17% -51.2% 751031 ± 3% proc-vmstat.nr_zone_active_anon
167438 ± 12% -50.9% 82288 ± 24% proc-vmstat.numa_hint_faults
106871 ± 19% -62.1% 40516 ± 33% proc-vmstat.numa_hint_faults_local
17429790 ± 2% +63.6% 28512466 proc-vmstat.numa_hit
17363565 ± 2% +63.8% 28445844 proc-vmstat.numa_local
17470213 ± 2% +63.5% 28565863 proc-vmstat.pgalloc_normal
645222 -20.6% 512041 ± 3% proc-vmstat.pgfault
15401346 +80.1% 27730965 proc-vmstat.pgfree
5.248e+10 +8.6% 5.701e+10 perf-stat.i.branch-instructions
0.33 ± 3% -0.2 0.10 ± 11% perf-stat.i.branch-miss-rate%
1.647e+08 ± 2% -71.0% 47792335 ± 9% perf-stat.i.branch-misses
19.40 ± 8% +5.2 24.63 ± 7% perf-stat.i.cache-miss-rate%
9432268 ± 15% -23.5% 7215380 ± 14% perf-stat.i.cache-misses
46766538 ± 10% -34.7% 30557228 ± 8% perf-stat.i.cache-references
23928853 -95.8% 1009521 perf-stat.i.context-switches
373.88 -95.8% 15.81 perf-stat.i.metric.K/sec
8711 ± 3% -23.2% 6694 ± 4% perf-stat.i.minor-faults
8711 ± 3% -23.1% 6694 ± 4% perf-stat.i.page-faults
0.31 ± 2% -0.2 0.08 ± 9% perf-stat.overall.branch-miss-rate%
20.07 ± 7% +3.3 23.33 ± 6% perf-stat.overall.cache-miss-rate%
5.16e+10 +8.6% 5.606e+10 perf-stat.ps.branch-instructions
1.616e+08 ± 2% -71.0% 46862413 ± 9% perf-stat.ps.branch-misses
9324763 ± 15% -23.8% 7101263 ± 15% perf-stat.ps.cache-misses
46321216 ± 10% -34.6% 30283901 ± 8% perf-stat.ps.cache-references
23514896 -95.8% 992706 perf-stat.ps.context-switches
8550 ± 2% -23.0% 6584 ± 4% perf-stat.ps.minor-faults
8550 ± 2% -23.0% 6584 ± 4% perf-stat.ps.page-faults
0.00 ±223% +2945.0% 0.08 ±150% perf-sched.sch_delay.avg.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.folio_alloc_mpol_noprof.vma_alloc_folio_noprof
13.16 ± 77% -93.4% 0.87 ±132% perf-sched.sch_delay.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
0.00 ±223% +74228.0% 0.62 ± 53% perf-sched.sch_delay.avg.ms.__cond_resched.down_write.shmem_file_write_iter.vfs_write.ksys_write
0.98 ± 30% -70.0% 0.30 ± 17% perf-sched.sch_delay.avg.ms.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read
0.18 ±140% +313.8% 0.76 ± 45% perf-sched.sch_delay.avg.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
14.41 ±148% -99.1% 0.12 ± 18% perf-sched.sch_delay.avg.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.01 ± 53% +564.2% 0.10 ± 44% perf-sched.sch_delay.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_call_function_single.[unknown].[unknown]
0.33 ± 33% -33.3% 0.22 ± 34% perf-sched.sch_delay.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown]
0.86 ± 27% -77.3% 0.20 perf-sched.sch_delay.avg.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
1.29 ± 27% -89.3% 0.14 ± 40% perf-sched.sch_delay.avg.ms.pipe_wait_readable.ipipe_prep.part.0.do_tee
0.02 ± 23% -56.7% 0.01 ± 8% perf-sched.sch_delay.avg.ms.pipe_wait_writable.opipe_prep.part.0.do_tee
0.34 ± 15% -69.1% 0.10 ± 2% perf-sched.sch_delay.avg.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
9.19 ± 61% -99.8% 0.01 ± 67% perf-sched.sch_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
0.02 ± 20% +287.4% 0.09 perf-sched.sch_delay.avg.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
17.13 ± 92% -99.0% 0.18 ±112% perf-sched.sch_delay.avg.ms.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
0.00 ±223% +3485.6% 0.15 ±164% perf-sched.sch_delay.max.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.folio_alloc_mpol_noprof.vma_alloc_folio_noprof
0.10 ±158% +1534.9% 1.65 ± 50% perf-sched.sch_delay.max.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.pipe_write.vfs_write
863.48 ± 36% -70.7% 252.62 ±149% perf-sched.sch_delay.max.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
0.00 ±223% +5.5e+05% 4.62 ± 63% perf-sched.sch_delay.max.ms.__cond_resched.down_write.shmem_file_write_iter.vfs_write.ksys_write
1.28 ±217% +504.3% 7.74 ± 17% perf-sched.sch_delay.max.ms.__cond_resched.mutex_lock.fdget_pos.ksys_write.do_syscall_64
203.65 ± 26% -95.4% 9.44 ± 10% perf-sched.sch_delay.max.ms.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read
0.04 ±223% +444.1% 0.20 ± 71% perf-sched.sch_delay.max.ms.__cond_resched.pipe_write.vfs_write.ksys_write.do_syscall_64
0.54 ±142% +1407.1% 8.13 ± 32% perf-sched.sch_delay.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
0.27 ±135% +1223.4% 3.63 ± 81% perf-sched.sch_delay.max.ms.irqentry_exit_to_user_mode.asm_sysvec_call_function_single.[unknown].[unknown]
2014 ± 40% -99.0% 19.92 ± 29% perf-sched.sch_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
299.74 ± 13% -96.5% 10.45 ± 64% perf-sched.sch_delay.max.ms.pipe_wait_readable.ipipe_prep.part.0.do_tee
328.92 ± 16% -91.7% 27.21 ±166% perf-sched.sch_delay.max.ms.pipe_wait_writable.opipe_prep.part.0.do_tee
309.06 ± 14% -89.4% 32.70 ±100% perf-sched.sch_delay.max.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
444.84 ± 29% -99.7% 1.19 ±129% perf-sched.sch_delay.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
939.99 ± 61% -94.4% 52.33 ±127% perf-sched.sch_delay.max.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
1372 ± 80% -98.8% 16.87 ±160% perf-sched.sch_delay.max.ms.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
0.03 ± 20% +127.0% 0.07 perf-sched.total_sch_delay.average.ms
2159 ± 40% -87.1% 278.03 ±131% perf-sched.total_sch_delay.max.ms
0.12 ± 15% +213.1% 0.38 ± 2% perf-sched.total_wait_and_delay.average.ms
12670156 ± 20% -65.4% 4386881 perf-sched.total_wait_and_delay.count.ms
5167 ± 12% -20.5% 4108 perf-sched.total_wait_and_delay.max.ms
0.09 ± 14% +242.6% 0.31 ± 2% perf-sched.total_wait_time.average.ms
38.76 ± 39% -69.3% 11.90 ± 15% perf-sched.wait_and_delay.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
2.00 ± 29% -68.8% 0.62 ± 15% perf-sched.wait_and_delay.avg.ms.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read
0.35 ±149% +330.4% 1.52 ± 45% perf-sched.wait_and_delay.avg.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
0.66 ± 33% -38.7% 0.41 ± 53% perf-sched.wait_and_delay.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown]
2.94 ± 47% -81.1% 0.56 ± 62% perf-sched.wait_and_delay.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown].[unknown]
3.20 ± 14% -51.5% 1.55 ± 23% perf-sched.wait_and_delay.avg.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
2.99 ± 27% -86.5% 0.40 ± 29% perf-sched.wait_and_delay.avg.ms.pipe_wait_readable.ipipe_prep.part.0.do_tee
0.05 ± 22% +215.4% 0.17 perf-sched.wait_and_delay.avg.ms.pipe_wait_writable.opipe_prep.part.0.do_tee
5.84 ± 22% -94.9% 0.30 ± 2% perf-sched.wait_and_delay.avg.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
22.31 ± 37% -86.9% 2.92 ± 15% perf-sched.wait_and_delay.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
60.96 ± 64% -95.9% 2.48 ± 15% perf-sched.wait_and_delay.avg.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
694.35 ± 24% -34.8% 452.48 perf-sched.wait_and_delay.avg.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
41.35 ± 51% -61.4% 15.94 ± 8% perf-sched.wait_and_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
837.15 ± 9% -38.7% 513.26 ± 3% perf-sched.wait_and_delay.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
0.05 ± 18% +287.7% 0.19 perf-sched.wait_and_delay.avg.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
974.67 ± 43% -81.2% 183.00 ± 98% perf-sched.wait_and_delay.count.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.folio_alloc_mpol_noprof.shmem_alloc_folio
172.83 ± 12% +115.7% 372.80 ± 6% perf-sched.wait_and_delay.count.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
2935 ± 44% -60.9% 1147 ± 26% perf-sched.wait_and_delay.count.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
1.00 ±141% +17520.0% 176.20 ± 25% perf-sched.wait_and_delay.count.__cond_resched.mutex_lock.fdget_pos.ksys_write.do_syscall_64
1742 ± 16% +66.8% 2906 ± 8% perf-sched.wait_and_delay.count.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read
517.00 ± 55% +596.3% 3600 ± 23% perf-sched.wait_and_delay.count.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write
1.00 ±141% +32440.0% 325.40 ± 19% perf-sched.wait_and_delay.count.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
885.67 ± 41% -65.1% 308.80 ± 54% perf-sched.wait_and_delay.count.__cond_resched.shmem_inode_acct_blocks.shmem_alloc_and_add_folio.shmem_get_folio_gfp.shmem_write_begin
1.17 ± 76% +328.6% 5.00 perf-sched.wait_and_delay.count.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
46.17 ± 21% +102.3% 93.40 ± 3% perf-sched.wait_and_delay.count.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
6.33 ± 61% +203.2% 19.20 ± 5% perf-sched.wait_and_delay.count.irq_thread.kthread.ret_from_fork.ret_from_fork_asm
827.50 ± 20% +192.3% 2418 ± 8% perf-sched.wait_and_delay.count.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt.[unknown].[unknown]
23590 ± 24% +194.3% 69429 ± 22% perf-sched.wait_and_delay.count.pipe_read.vfs_read.ksys_read.do_syscall_64
34754 ± 32% +467.3% 197159 ± 28% perf-sched.wait_and_delay.count.pipe_wait_readable.ipipe_prep.part.0.do_tee
6287013 ± 20% -74.8% 1585356 ± 3% perf-sched.wait_and_delay.count.pipe_wait_writable.opipe_prep.part.0.do_tee
46312 ± 21% +1467.4% 725907 ± 6% perf-sched.wait_and_delay.count.pipe_write.vfs_write.ksys_write.do_syscall_64
24.50 ± 22% +92.7% 47.20 ± 15% perf-sched.wait_and_delay.count.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
11.67 ± 24% +98.9% 23.20 perf-sched.wait_and_delay.count.schedule_hrtimeout_range.do_poll.constprop.0.do_sys_poll
40.67 ± 22% +114.4% 87.20 perf-sched.wait_and_delay.count.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
8.83 ± 28% +121.9% 19.60 ± 4% perf-sched.wait_and_delay.count.schedule_timeout.kcompactd.kthread.ret_from_fork
319.00 ± 16% +103.7% 649.80 ± 3% perf-sched.wait_and_delay.count.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
6266766 ± 20% -71.4% 1792099 perf-sched.wait_and_delay.count.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
15.00 ± 27% +144.0% 36.60 perf-sched.wait_and_delay.count.wait_for_partner.fifo_open.do_dentry_open.vfs_open
207.17 ± 33% +104.6% 423.80 ± 8% perf-sched.wait_and_delay.count.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
1843 ± 20% -34.8% 1201 ± 33% perf-sched.wait_and_delay.max.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
2.56 ±218% +505.4% 15.49 ± 17% perf-sched.wait_and_delay.max.ms.__cond_resched.mutex_lock.fdget_pos.ksys_write.do_syscall_64
407.31 ± 26% -95.4% 18.88 ± 10% perf-sched.wait_and_delay.max.ms.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read
1.04 ±149% +1457.6% 16.26 ± 32% perf-sched.wait_and_delay.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
1185 ± 57% -94.0% 70.68 ±122% perf-sched.wait_and_delay.max.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
4839 ± 21% -63.0% 1788 ± 64% perf-sched.wait_and_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
599.48 ± 13% -94.8% 30.94 ± 68% perf-sched.wait_and_delay.max.ms.pipe_wait_readable.ipipe_prep.part.0.do_tee
657.85 ± 16% -91.5% 55.93 ±160% perf-sched.wait_and_delay.max.ms.pipe_wait_writable.opipe_prep.part.0.do_tee
673.79 ± 21% -90.3% 65.42 ±100% perf-sched.wait_and_delay.max.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
284.00 ± 52% -95.5% 12.82 ±110% perf-sched.wait_and_delay.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
1366 ± 52% -98.7% 17.62 ± 86% perf-sched.wait_and_delay.max.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
2100 ± 52% -76.0% 505.00 perf-sched.wait_and_delay.max.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
1044 ± 29% -61.4% 403.20 ± 22% perf-sched.wait_and_delay.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
2349 ± 19% -57.4% 1000 perf-sched.wait_and_delay.max.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
25.60 ± 21% -56.9% 11.03 ± 5% perf-sched.wait_time.avg.ms.__cond_resched.__wait_for_common.affine_move_task.__set_cpus_allowed_ptr.__sched_setaffinity
0.00 ±223% +74228.0% 0.62 ± 53% perf-sched.wait_time.avg.ms.__cond_resched.down_write.shmem_file_write_iter.vfs_write.ksys_write
1.02 ± 28% -67.7% 0.33 ± 13% perf-sched.wait_time.avg.ms.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read
0.18 ±140% +313.8% 0.76 ± 45% perf-sched.wait_time.avg.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
0.33 ± 33% -33.3% 0.22 ± 34% perf-sched.wait_time.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown]
2.63 ± 50% -87.7% 0.32 ± 47% perf-sched.wait_time.avg.ms.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown].[unknown]
2.34 ± 14% -42.1% 1.36 ± 26% perf-sched.wait_time.avg.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
1.70 ± 27% -84.4% 0.26 ± 24% perf-sched.wait_time.avg.ms.pipe_wait_readable.ipipe_prep.part.0.do_tee
0.03 ± 20% +408.2% 0.16 perf-sched.wait_time.avg.ms.pipe_wait_writable.opipe_prep.part.0.do_tee
5.51 ± 23% -96.5% 0.19 ± 2% perf-sched.wait_time.avg.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
19.69 ± 35% -85.8% 2.79 ± 8% perf-sched.wait_time.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
0.00 ±223% +20831.4% 0.24 ± 55% perf-sched.wait_time.avg.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pipe_double_lock
49.52 ± 60% -95.6% 2.19 ± 15% perf-sched.wait_time.avg.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
694.34 ± 24% -34.8% 452.47 perf-sched.wait_time.avg.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
837.02 ± 9% -38.7% 513.25 ± 3% perf-sched.wait_time.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
0.03 ± 17% +287.0% 0.10 perf-sched.wait_time.avg.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.19 ±131% +1122.8% 2.33 ± 76% perf-sched.wait_time.max.ms.__cond_resched.__alloc_pages_noprof.alloc_pages_mpol_noprof.pipe_write.vfs_write
0.00 ±223% +5.5e+05% 4.62 ± 63% perf-sched.wait_time.max.ms.__cond_resched.down_write.shmem_file_write_iter.vfs_write.ksys_write
1.28 ±217% +504.3% 7.74 ± 17% perf-sched.wait_time.max.ms.__cond_resched.mutex_lock.fdget_pos.ksys_write.do_syscall_64
203.65 ± 26% -95.4% 9.44 ± 10% perf-sched.wait_time.max.ms.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read
0.54 ±142% +1407.1% 8.13 ± 32% perf-sched.wait_time.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
32.46 ± 99% -80.2% 6.42 ± 74% perf-sched.wait_time.max.ms.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi.[unknown].[unknown]
300.67 ± 13% -91.3% 26.05 ± 75% perf-sched.wait_time.max.ms.pipe_wait_readable.ipipe_prep.part.0.do_tee
328.99 ± 16% -86.2% 45.34 ±151% perf-sched.wait_time.max.ms.pipe_wait_writable.opipe_prep.part.0.do_tee
391.47 ± 23% -86.7% 51.90 ±136% perf-sched.wait_time.max.ms.pipe_write.vfs_write.ksys_write.do_syscall_64
239.99 ± 46% -96.1% 9.32 ± 77% perf-sched.wait_time.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
0.00 ±223% +49648.6% 0.58 ± 61% perf-sched.wait_time.max.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.pipe_double_lock
864.13 ± 37% -98.0% 17.07 ± 89% perf-sched.wait_time.max.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
2100 ± 52% -76.0% 504.99 perf-sched.wait_time.max.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
2172 ± 17% -54.0% 1000 perf-sched.wait_time.max.ms.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
16.97 -15.7 1.26 ± 3% perf-profile.calltrace.cycles-pp.tee
15.24 -14.7 0.59 ± 2% perf-profile.calltrace.cycles-pp.opipe_prep.do_tee.__x64_sys_tee.do_syscall_64.entry_SYSCALL_64_after_hwframe
15.19 -14.6 0.56 ± 3% perf-profile.calltrace.cycles-pp.pipe_wait_writable.opipe_prep.do_tee.__x64_sys_tee.do_syscall_64
15.29 -14.6 0.69 ± 3% perf-profile.calltrace.cycles-pp.do_tee.__x64_sys_tee.do_syscall_64.entry_SYSCALL_64_after_hwframe.tee
15.30 -14.6 0.73 ± 3% perf-profile.calltrace.cycles-pp.__x64_sys_tee.do_syscall_64.entry_SYSCALL_64_after_hwframe.tee
15.34 -14.4 0.94 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.tee
15.34 -14.4 0.96 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.tee
14.06 -14.0 0.10 ±200% perf-profile.calltrace.cycles-pp.schedule.pipe_wait_writable.opipe_prep.do_tee.__x64_sys_tee
13.67 -13.6 0.10 ±200% perf-profile.calltrace.cycles-pp.__schedule.schedule.pipe_wait_writable.opipe_prep.do_tee
40.88 -11.1 29.80 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
10.86 -10.9 0.00 perf-profile.calltrace.cycles-pp.__wake_up_sync_key.pipe_read.vfs_read.ksys_read.do_syscall_64
13.96 -10.7 3.26 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
41.52 -10.6 30.89 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read
10.50 -10.5 0.00 perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_sync_key.pipe_read.vfs_read.ksys_read
10.35 -10.3 0.00 perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.pipe_read.vfs_read
10.12 -10.1 0.00 perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.pipe_read
9.38 -9.4 0.00 perf-profile.calltrace.cycles-pp.schedule.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
9.02 -9.0 0.00 perf-profile.calltrace.cycles-pp.__schedule.schedule.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe
52.99 -7.3 45.71 perf-profile.calltrace.cycles-pp.read
6.05 ± 2% -6.0 0.00 perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_sync_key
5.49 -5.5 0.00 perf-profile.calltrace.cycles-pp.try_to_block_task.__schedule.schedule.pipe_wait_writable.opipe_prep
5.25 -5.2 0.00 perf-profile.calltrace.cycles-pp.dequeue_task_fair.try_to_block_task.__schedule.schedule.pipe_wait_writable
5.02 -5.0 0.00 perf-profile.calltrace.cycles-pp.dequeue_entities.dequeue_task_fair.try_to_block_task.__schedule.schedule
20.87 -4.0 16.84 perf-profile.calltrace.cycles-pp.pipe_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
23.38 -2.3 21.12 perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
25.16 -1.2 23.92 perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
0.91 -0.2 0.73 ± 2% perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.read
0.54 ± 2% +0.3 0.83 ± 2% perf-profile.calltrace.cycles-pp.ktime_get_coarse_real_ts64_mg.current_time.atime_needs_update.touch_atime.pipe_read
0.61 +0.5 1.07 perf-profile.calltrace.cycles-pp.rw_verify_area.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.72 +0.5 1.24 ± 2% perf-profile.calltrace.cycles-pp.mutex_unlock.pipe_read.vfs_read.ksys_read.do_syscall_64
1.07 +0.5 1.62 ± 2% perf-profile.calltrace.cycles-pp.fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
0.78 +0.6 1.42 perf-profile.calltrace.cycles-pp.mutex_unlock.pipe_write.vfs_write.ksys_write.do_syscall_64
0.00 +0.6 0.64 perf-profile.calltrace.cycles-pp.__cond_resched.mutex_lock.pipe_read.vfs_read.ksys_read
0.00 +0.7 0.66 perf-profile.calltrace.cycles-pp.__cond_resched.mutex_lock.pipe_write.vfs_write.ksys_write
0.17 ±141% +0.7 0.91 perf-profile.calltrace.cycles-pp.rw_verify_area.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +0.7 0.75 perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
1.17 +0.8 1.93 perf-profile.calltrace.cycles-pp.current_time.atime_needs_update.touch_atime.pipe_read.vfs_read
0.00 +0.8 0.76 ± 4% perf-profile.calltrace.cycles-pp.stress_tee_pipe_write
0.00 +0.8 0.77 perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
0.08 ±223% +0.8 0.88 perf-profile.calltrace.cycles-pp.ktime_get_coarse_real_ts64_mg.current_time.inode_needs_update_time.file_update_time.pipe_write
0.00 +0.8 0.80 perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.write
1.14 +0.8 1.96 ± 2% perf-profile.calltrace.cycles-pp.mutex_lock.pipe_read.vfs_read.ksys_read.do_syscall_64
0.98 +0.9 1.84 ± 2% perf-profile.calltrace.cycles-pp.fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
1.16 +0.9 2.08 perf-profile.calltrace.cycles-pp.current_time.inode_needs_update_time.file_update_time.pipe_write.vfs_write
1.18 +1.0 2.13 perf-profile.calltrace.cycles-pp.mutex_lock.pipe_write.vfs_write.ksys_write.do_syscall_64
1.63 +1.3 2.93 perf-profile.calltrace.cycles-pp.inode_needs_update_time.file_update_time.pipe_write.vfs_write.ksys_write
2.33 +1.4 3.72 perf-profile.calltrace.cycles-pp.atime_needs_update.touch_atime.pipe_read.vfs_read.ksys_read
1.72 +1.4 3.16 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
2.63 +1.6 4.22 perf-profile.calltrace.cycles-pp.touch_atime.pipe_read.vfs_read.ksys_read.do_syscall_64
1.98 +1.6 3.57 perf-profile.calltrace.cycles-pp.file_update_time.pipe_write.vfs_write.ksys_write.do_syscall_64
2.86 +2.1 4.95 perf-profile.calltrace.cycles-pp._copy_to_iter.copy_page_to_iter.pipe_read.vfs_read.ksys_read
3.43 +2.5 5.92 perf-profile.calltrace.cycles-pp.copy_page_to_iter.pipe_read.vfs_read.ksys_read.do_syscall_64
2.99 +2.6 5.54 perf-profile.calltrace.cycles-pp._copy_from_iter.copy_page_from_iter.pipe_write.vfs_write.ksys_write
3.52 +2.6 6.11 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.read
4.25 +2.9 7.12 perf-profile.calltrace.cycles-pp.clear_bhb_loop.read
3.50 +3.0 6.47 perf-profile.calltrace.cycles-pp.copy_page_from_iter.pipe_write.vfs_write.ksys_write.do_syscall_64
3.75 +3.2 6.93 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.write
4.49 +3.8 8.33 perf-profile.calltrace.cycles-pp.clear_bhb_loop.write
9.78 +8.2 17.98 perf-profile.calltrace.cycles-pp.pipe_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
12.20 +10.2 22.45 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
13.89 +11.7 25.59 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
17.18 +14.4 31.62 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
17.86 +15.0 32.86 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write
26.99 +22.8 49.78 perf-profile.calltrace.cycles-pp.write
23.67 -22.6 1.11 ± 2% perf-profile.children.cycles-pp.schedule
23.19 -22.1 1.09 ± 2% perf-profile.children.cycles-pp.__schedule
16.98 -15.7 1.30 ± 3% perf-profile.children.cycles-pp.tee
15.24 -14.7 0.56 ± 3% perf-profile.children.cycles-pp.pipe_wait_writable
15.24 -14.7 0.59 ± 3% perf-profile.children.cycles-pp.opipe_prep
15.29 -14.6 0.70 ± 3% perf-profile.children.cycles-pp.do_tee
15.30 -14.6 0.73 ± 3% perf-profile.children.cycles-pp.__x64_sys_tee
73.87 -10.7 63.20 perf-profile.children.cycles-pp.do_syscall_64
10.91 -10.5 0.45 ± 5% perf-profile.children.cycles-pp.__wake_up_sync_key
10.61 -10.1 0.52 ± 7% perf-profile.children.cycles-pp.__wake_up_common
75.40 -10.0 65.40 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
10.44 -9.9 0.51 ± 6% perf-profile.children.cycles-pp.autoremove_wake_function
10.32 -9.8 0.51 ± 6% perf-profile.children.cycles-pp.try_to_wake_up
16.00 -9.0 6.96 perf-profile.children.cycles-pp.syscall_exit_to_user_mode
53.19 -7.3 45.93 perf-profile.children.cycles-pp.read
6.34 -6.1 0.29 ± 2% perf-profile.children.cycles-pp.__pick_next_task
6.16 -5.9 0.28 ± 2% perf-profile.children.cycles-pp.pick_next_task_fair
6.13 ± 2% -5.8 0.28 perf-profile.children.cycles-pp.ttwu_do_activate
5.56 -5.3 0.27 ± 4% perf-profile.children.cycles-pp.try_to_block_task
5.32 -5.1 0.26 ± 3% perf-profile.children.cycles-pp.dequeue_task_fair
5.12 -4.9 0.25 ± 3% perf-profile.children.cycles-pp.dequeue_entities
4.92 ± 3% -4.7 0.25 ± 2% perf-profile.children.cycles-pp.enqueue_task
4.69 ± 3% -4.5 0.23 ± 2% perf-profile.children.cycles-pp.enqueue_task_fair
4.57 -4.3 0.22 ± 5% perf-profile.children.cycles-pp.update_curr
4.42 -4.2 0.21 perf-profile.children.cycles-pp.update_load_avg
4.31 -4.1 0.19 ± 2% perf-profile.children.cycles-pp.switch_mm_irqs_off
21.23 -3.8 17.41 perf-profile.children.cycles-pp.pipe_read
3.28 -3.1 0.15 ± 6% perf-profile.children.cycles-pp.dequeue_entity
2.87 ± 3% -2.7 0.12 ± 3% perf-profile.children.cycles-pp.enqueue_entity
23.53 -2.2 21.36 perf-profile.children.cycles-pp.vfs_read
2.17 -2.1 0.09 ± 4% perf-profile.children.cycles-pp.pick_task_fair
1.90 -1.8 0.09 ± 7% perf-profile.children.cycles-pp.set_next_entity
1.70 -1.6 0.08 ± 5% perf-profile.children.cycles-pp.__update_load_avg_se
1.70 -1.6 0.09 ± 4% perf-profile.children.cycles-pp.prepare_task_switch
1.59 -1.5 0.07 ± 7% perf-profile.children.cycles-pp.__switch_to_asm
1.65 -1.5 0.14 perf-profile.children.cycles-pp.__rseq_handle_notify_resume
1.54 -1.5 0.07 perf-profile.children.cycles-pp.__switch_to
1.43 -1.4 0.07 perf-profile.children.cycles-pp.put_prev_entity
1.39 -1.3 0.06 perf-profile.children.cycles-pp.__update_load_avg_cfs_rq
1.36 -1.3 0.07 perf-profile.children.cycles-pp.wakeup_preempt
1.28 -1.2 0.07 perf-profile.children.cycles-pp.pick_eevdf
25.30 -1.1 24.16 perf-profile.children.cycles-pp.ksys_read
1.17 ± 9% -1.1 0.06 ± 8% perf-profile.children.cycles-pp.select_task_rq
0.98 ± 11% -0.9 0.04 ± 50% perf-profile.children.cycles-pp.select_task_rq_fair
0.99 -0.9 0.06 ± 6% perf-profile.children.cycles-pp.check_preempt_wakeup_fair
0.90 -0.8 0.08 ± 6% perf-profile.children.cycles-pp.rseq_ip_fixup
1.05 ± 16% -0.7 0.34 ±113% perf-profile.children.cycles-pp.reader__read_event
1.05 ± 16% -0.7 0.34 ±112% perf-profile.children.cycles-pp.perf_session__process_events
1.05 ± 16% -0.7 0.34 ±112% perf-profile.children.cycles-pp.record__finish_output
0.71 -0.6 0.06 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.61 -0.6 0.04 ± 50% perf-profile.children.cycles-pp.os_xsave
0.62 ± 5% -0.5 0.08 ± 5% perf-profile.children.cycles-pp.reweight_entity
0.59 -0.5 0.05 ± 7% perf-profile.children.cycles-pp.prepare_to_wait_event
0.22 ± 2% -0.1 0.11 perf-profile.children.cycles-pp.switch_fpu_return
0.19 ± 3% -0.0 0.17 ± 4% perf-profile.children.cycles-pp.__hrtimer_run_queues
0.16 ± 2% -0.0 0.14 ± 3% perf-profile.children.cycles-pp.update_process_times
0.18 ± 4% -0.0 0.16 ± 4% perf-profile.children.cycles-pp.tick_nohz_handler
0.08 ± 7% -0.0 0.06 ± 7% perf-profile.children.cycles-pp.sched_tick
0.07 +0.0 0.09 ± 15% perf-profile.children.cycles-pp.__wake_up
0.09 ± 5% +0.0 0.12 ± 6% perf-profile.children.cycles-pp.page_counter_cancel
0.09 ± 10% +0.0 0.13 ± 9% perf-profile.children.cycles-pp.page_counter_uncharge
0.07 ± 5% +0.0 0.12 ± 10% perf-profile.children.cycles-pp.__splice_from_pipe
0.11 ± 9% +0.1 0.16 ± 9% perf-profile.children.cycles-pp.uncharge_batch
0.07 ± 6% +0.1 0.13 ± 5% perf-profile.children.cycles-pp.__alloc_pages_noprof
0.08 ± 5% +0.1 0.14 ± 7% perf-profile.children.cycles-pp.alloc_pages_mpol_noprof
0.12 ± 11% +0.1 0.18 ± 9% perf-profile.children.cycles-pp.__mem_cgroup_uncharge
0.12 ± 9% +0.1 0.18 ± 8% perf-profile.children.cycles-pp.__folio_put
0.00 +0.1 0.06 ± 12% perf-profile.children.cycles-pp.__memcg_kmem_charge_page
0.08 +0.1 0.15 ± 7% perf-profile.children.cycles-pp.splice_from_pipe
0.18 ± 8% +0.1 0.26 ± 2% perf-profile.children.cycles-pp.__x64_sys_read
0.00 +0.1 0.09 perf-profile.children.cycles-pp.restore_fpregs_from_fpstate
0.09 ± 5% +0.1 0.19 ± 7% perf-profile.children.cycles-pp.do_splice
0.09 ± 4% +0.1 0.22 ± 6% perf-profile.children.cycles-pp.__x64_sys_splice
0.19 +0.1 0.32 ± 2% perf-profile.children.cycles-pp.make_vfsuid
0.19 +0.1 0.32 ± 3% perf-profile.children.cycles-pp.make_vfsgid
0.16 ± 2% +0.1 0.29 perf-profile.children.cycles-pp.__x64_sys_write
0.22 ± 5% +0.1 0.36 ± 3% perf-profile.children.cycles-pp.read@plt
0.19 ± 2% +0.2 0.34 ± 6% perf-profile.children.cycles-pp.write@plt
1.00 +0.2 1.16 ± 3% perf-profile.children.cycles-pp.stress_tee_pipe_read
0.14 ± 3% +0.2 0.33 ± 5% perf-profile.children.cycles-pp.splice
0.36 +0.2 0.60 perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack
0.38 +0.3 0.68 perf-profile.children.cycles-pp.kill_fasync
1.48 +0.3 1.78 perf-profile.children.cycles-pp.syscall_return_via_sysret
0.40 +0.3 0.73 perf-profile.children.cycles-pp.rcu_all_qs
0.56 +0.4 0.96 perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare
0.56 +0.4 1.00 perf-profile.children.cycles-pp.stress_tee_pipe_write
0.58 +0.5 1.04 perf-profile.children.cycles-pp.security_file_permission
1.13 +0.7 1.88 perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64_mg
0.96 +0.8 1.72 perf-profile.children.cycles-pp.x64_sys_call
0.92 +0.8 1.69 perf-profile.children.cycles-pp.__cond_resched
1.30 +1.0 2.33 perf-profile.children.cycles-pp.rw_verify_area
1.59 +1.3 2.87 perf-profile.children.cycles-pp.mutex_unlock
1.72 +1.4 3.11 perf-profile.children.cycles-pp.inode_needs_update_time
2.14 +1.5 3.62 perf-profile.children.cycles-pp.fdget_pos
2.51 +1.5 4.04 perf-profile.children.cycles-pp.atime_needs_update
2.72 +1.7 4.37 perf-profile.children.cycles-pp.touch_atime
2.08 +1.7 3.75 perf-profile.children.cycles-pp.file_update_time
2.52 +1.8 4.35 perf-profile.children.cycles-pp.current_time
2.52 +2.0 4.49 perf-profile.children.cycles-pp.mutex_lock
2.92 +2.1 5.03 perf-profile.children.cycles-pp._copy_to_iter
3.53 +2.6 6.09 perf-profile.children.cycles-pp.copy_page_to_iter
3.04 +2.6 5.64 perf-profile.children.cycles-pp._copy_from_iter
3.27 +2.7 5.96 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack
3.65 +3.1 6.75 perf-profile.children.cycles-pp.copy_page_from_iter
4.17 +3.3 7.49 perf-profile.children.cycles-pp.entry_SYSCALL_64
8.86 +6.9 15.76 perf-profile.children.cycles-pp.clear_bhb_loop
10.12 +8.5 18.62 perf-profile.children.cycles-pp.pipe_write
12.38 +10.4 22.74 perf-profile.children.cycles-pp.vfs_write
14.06 +11.8 25.89 perf-profile.children.cycles-pp.ksys_write
27.17 +22.9 50.09 perf-profile.children.cycles-pp.write
4.22 -4.0 0.19 perf-profile.self.cycles-pp.switch_mm_irqs_off
2.34 -2.2 0.11 ± 4% perf-profile.self.cycles-pp.__schedule
1.73 ± 4% -1.6 0.08 ± 12% perf-profile.self.cycles-pp.update_curr
1.57 -1.5 0.07 ± 7% perf-profile.self.cycles-pp.__switch_to_asm
1.56 -1.5 0.08 ± 5% perf-profile.self.cycles-pp.__update_load_avg_se
1.46 -1.4 0.07 ± 7% perf-profile.self.cycles-pp.__switch_to
1.43 -1.4 0.07 perf-profile.self.cycles-pp.update_load_avg
1.30 -1.2 0.06 ± 6% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
0.82 ± 2% -0.8 0.05 ± 7% perf-profile.self.cycles-pp.prepare_task_switch
0.81 -0.8 0.04 ± 50% perf-profile.self.cycles-pp.pick_eevdf
0.67 -0.6 0.05 ± 9% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.60 -0.6 0.04 ± 50% perf-profile.self.cycles-pp.os_xsave
0.08 ± 12% +0.0 0.10 ± 6% perf-profile.self.cycles-pp.read@plt
0.08 ± 5% +0.0 0.12 ± 6% perf-profile.self.cycles-pp.page_counter_cancel
0.13 ± 11% +0.0 0.18 ± 4% perf-profile.self.cycles-pp.__x64_sys_read
0.05 +0.1 0.10 ± 17% perf-profile.self.cycles-pp.write@plt
0.00 +0.1 0.06 ± 8% perf-profile.self.cycles-pp.tee
0.11 ± 3% +0.1 0.19 perf-profile.self.cycles-pp.__x64_sys_write
0.00 +0.1 0.09 perf-profile.self.cycles-pp.restore_fpregs_from_fpstate
0.14 ± 2% +0.1 0.24 ± 4% perf-profile.self.cycles-pp.make_vfsgid
0.14 +0.1 0.24 perf-profile.self.cycles-pp.make_vfsuid
0.20 ± 2% +0.1 0.32 perf-profile.self.cycles-pp.touch_atime
0.20 ± 2% +0.1 0.34 ± 2% perf-profile.self.cycles-pp.kill_fasync
0.87 +0.2 1.04 ± 3% perf-profile.self.cycles-pp.stress_tee_pipe_read
0.30 +0.2 0.54 perf-profile.self.cycles-pp.rcu_all_qs
0.34 +0.2 0.59 perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack
0.35 +0.3 0.63 perf-profile.self.cycles-pp.file_update_time
0.45 +0.3 0.78 perf-profile.self.cycles-pp.syscall_exit_to_user_mode_prepare
0.50 ± 2% +0.4 0.86 ± 2% perf-profile.self.cycles-pp.stress_tee_pipe_write
0.47 +0.4 0.85 perf-profile.self.cycles-pp.inode_needs_update_time
0.48 +0.4 0.86 perf-profile.self.cycles-pp.security_file_permission
0.62 +0.4 1.06 perf-profile.self.cycles-pp.copy_page_to_iter
0.51 +0.4 0.96 perf-profile.self.cycles-pp.__cond_resched
0.70 +0.5 1.18 ± 2% perf-profile.self.cycles-pp.ksys_read
0.96 +0.5 1.47 perf-profile.self.cycles-pp.atime_needs_update
0.66 +0.5 1.19 perf-profile.self.cycles-pp.copy_page_from_iter
1.18 +0.6 1.74 perf-profile.self.cycles-pp.syscall_return_via_sysret
0.72 +0.6 1.29 perf-profile.self.cycles-pp.rw_verify_area
0.71 +0.6 1.31 perf-profile.self.cycles-pp.ksys_write
1.51 +0.7 2.18 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
0.85 +0.7 1.52 perf-profile.self.cycles-pp.x64_sys_call
1.03 +0.7 1.70 perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64_mg
1.04 +0.8 1.82 perf-profile.self.cycles-pp.entry_SYSCALL_64
1.87 +1.0 2.92 perf-profile.self.cycles-pp.pipe_read
1.39 +1.1 2.47 perf-profile.self.cycles-pp.current_time
1.64 +1.1 2.78 ± 2% perf-profile.self.cycles-pp.vfs_read
1.59 +1.2 2.78 perf-profile.self.cycles-pp.mutex_lock
1.49 +1.2 2.68 perf-profile.self.cycles-pp.mutex_unlock
1.81 +1.2 3.04 perf-profile.self.cycles-pp.read
2.03 +1.4 3.39 perf-profile.self.cycles-pp.do_syscall_64
2.03 +1.4 3.44 ± 2% perf-profile.self.cycles-pp.fdget_pos
1.64 +1.4 3.07 perf-profile.self.cycles-pp.vfs_write
1.84 +1.6 3.43 perf-profile.self.cycles-pp.write
3.60 +1.8 5.36 perf-profile.self.cycles-pp.syscall_exit_to_user_mode
2.13 +1.8 3.94 ± 2% perf-profile.self.cycles-pp.pipe_write
2.86 +2.1 4.93 perf-profile.self.cycles-pp._copy_to_iter
2.93 +2.5 5.44 perf-profile.self.cycles-pp._copy_from_iter
3.16 +2.6 5.75 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack
8.75 +6.8 15.58 perf-profile.self.cycles-pp.clear_bhb_loop

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.

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