Hello,
kernel test robot noticed a 122.2% improvement of will-it-scale.per_thread_ops on:
commit: 4ed4379881aa62588aba6442a9f362a8cf7624e6 ("mm: handle shared faults under the VMA lock")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: will-it-scale
test machine: 104 threads 2 sockets (Skylake) with 192G memory
parameters:
nr_task: 16
mode: thread
test: page_fault3
cpufreq_governor: performance
In addition to that, the commit also has significant impact on the following tests:
+------------------+-------------------------------------------------------------------------------------------------+
| testcase: change | will-it-scale: will-it-scale.per_process_ops 7.8% improvement |
| test machine | 104 threads 2 sockets (Skylake) with 192G memory |
| test parameters | cpufreq_governor=performance |
| | mode=process |
| | nr_task=16 |
| | test=page_fault3 |
+------------------+-------------------------------------------------------------------------------------------------+
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20231115/[email protected]
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-12/performance/x86_64-rhel-8.3/thread/16/debian-11.1-x86_64-20220510.cgz/lkp-skl-fpga01/page_fault3/will-it-scale
commit:
164b06f238 ("mm: call wp_page_copy() under the VMA lock")
4ed4379881 ("mm: handle shared faults under the VMA lock")
164b06f238b98631 4ed4379881aa62588aba6442a9f
---------------- ---------------------------
%stddev %change %stddev
\ | \
150146 ? 13% +19.7% 179652 ? 7% numa-meminfo.node0.Slab
32317 ? 5% -5.6% 30493 uptime.idle
11.42 ? 2% -1.2 10.22 ? 2% mpstat.cpu.all.sys%
1.86 ? 3% +2.3 4.14 mpstat.cpu.all.usr%
2648761 +89.3% 5013662 numa-numastat.node0.local_node
2696913 ? 2% +88.3% 5077488 numa-numastat.node0.numa_hit
2696747 ? 2% +88.3% 5077459 numa-vmstat.node0.numa_hit
2648596 +89.3% 5013633 numa-vmstat.node0.numa_local
107.33 ? 14% +72.8% 185.50 ? 11% perf-c2c.DRAM.local
2752 ? 12% -39.0% 1678 ? 15% perf-c2c.HITM.local
6748 ? 2% -59.5% 2730 vmstat.system.cs
175383 +76.1% 308919 vmstat.system.in
3301453 +122.2% 7336336 will-it-scale.16.threads
84.29 -1.1% 83.34 will-it-scale.16.threads_idle
206340 +122.2% 458520 will-it-scale.per_thread_ops
3301453 +122.2% 7336336 will-it-scale.workload
263502 ? 2% +4.7% 275788 proc-vmstat.nr_mapped
3322833 +72.3% 5723978 proc-vmstat.numa_hit
3215175 +74.7% 5616311 proc-vmstat.numa_local
3408340 +70.6% 5814446 proc-vmstat.pgalloc_normal
9.943e+08 +122.1% 2.208e+09 proc-vmstat.pgfault
3359696 +71.6% 5765300 proc-vmstat.pgfree
1102135 ? 9% +19.8% 1320904 ? 6% sched_debug.cfs_rq:/.avg_vruntime.max
1102135 ? 9% +19.8% 1320904 ? 6% sched_debug.cfs_rq:/.min_vruntime.max
862.58 ? 3% +13.3% 976.92 ? 6% sched_debug.cfs_rq:/.runnable_avg.max
862.44 ? 3% +13.2% 976.50 ? 6% sched_debug.cfs_rq:/.util_avg.max
286.93 ? 6% +12.1% 321.76 ? 4% sched_debug.cfs_rq:/.util_est_enqueued.stddev
202058 ? 8% -35.9% 129538 ? 3% sched_debug.cpu.avg_idle.stddev
11549 ? 6% -49.0% 5886 sched_debug.cpu.nr_switches.avg
13882 ? 9% -36.2% 8854 ? 11% sched_debug.cpu.nr_switches.stddev
450048 ? 4% -92.1% 35653 ? 4% turbostat.C1
0.40 ? 5% -0.4 0.02 ? 28% turbostat.C1%
986845 -75.4% 242529 ? 6% turbostat.C1E
1.07 ? 4% -0.8 0.30 ? 12% turbostat.C1E%
0.08 ? 5% +62.0% 0.14 ? 3% turbostat.IPC
76389757 +106.4% 1.577e+08 turbostat.IRQ
218.21 +6.4% 232.07 turbostat.PkgWatt
20.26 +2.6% 20.79 turbostat.RAMWatt
0.01 ?145% -94.2% 0.00 ?111% perf-sched.sch_delay.avg.ms.__cond_resched.shmem_get_folio_gfp.shmem_fault.__do_fault.do_fault
0.00 ? 9% -78.3% 0.00 ? 82% perf-sched.sch_delay.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_exc_page_fault
0.00 ? 9% -73.9% 0.00 ? 57% perf-sched.sch_delay.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt
0.00 ? 14% -87.5% 0.00 ? 99% perf-sched.sch_delay.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_reschedule_ipi
0.02 ?164% -100.0% 0.00 perf-sched.sch_delay.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
0.01 ? 58% -100.0% 0.00 perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read_killable.lock_mm_and_find_vma
167.10 ?223% +200.2% 501.66 ? 99% perf-sched.sch_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
0.03 ?160% -100.0% 0.00 perf-sched.sch_delay.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
12.57 ? 58% -100.0% 0.00 perf-sched.sch_delay.max.ms.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read_killable.lock_mm_and_find_vma
0.01 ? 23% -54.1% 0.01 ? 67% perf-sched.sch_delay.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write_killable.vm_mmap_pgoff
47.80 ? 2% +123.9% 107.01 ? 3% perf-sched.total_wait_and_delay.average.ms
18466 ? 2% -55.7% 8181 ? 3% perf-sched.total_wait_and_delay.count.ms
47.77 ? 2% +123.6% 106.82 ? 3% perf-sched.total_wait_time.average.ms
2.79 ? 10% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
0.69 ? 9% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read_killable.lock_mm_and_find_vma
0.82 ? 10% +125.0% 1.85 ? 14% perf-sched.wait_and_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write_killable.__vm_munmap
0.12 ? 33% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write_killable.vm_mmap_pgoff
143.67 ? 5% -100.0% 0.00 perf-sched.wait_and_delay.count.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
11285 ? 3% -100.0% 0.00 perf-sched.wait_and_delay.count.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read_killable.lock_mm_and_find_vma
971.50 ? 2% +117.6% 2114 ? 3% perf-sched.wait_and_delay.count.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write_killable.__vm_munmap
279.17 ? 4% -100.0% 0.00 perf-sched.wait_and_delay.count.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write_killable.vm_mmap_pgoff
4.85 ? 6% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
13.27 ? 47% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read_killable.lock_mm_and_find_vma
5.25 ? 25% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write_killable.vm_mmap_pgoff
33.35 ? 14% -85.5% 4.84 ? 7% perf-sched.wait_and_delay.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
2.77 ? 11% -100.0% 0.00 perf-sched.wait_time.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
0.68 ? 9% -100.0% 0.00 perf-sched.wait_time.avg.ms.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read_killable.lock_mm_and_find_vma
0.81 ? 9% +127.0% 1.84 ? 14% perf-sched.wait_time.avg.ms.schedule_preempt_disabled.rwsem_down_write_slowpath.down_write_killable.__vm_munmap
4.84 ? 6% -100.0% 0.00 perf-sched.wait_time.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm
4.27 -100.0% 0.00 perf-sched.wait_time.max.ms.schedule_preempt_disabled.rwsem_down_read_slowpath.down_read_killable.lock_mm_and_find_vma
32.32 ? 18% -85.1% 4.83 ? 7% perf-sched.wait_time.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
2.627e+09 ? 3% +73.7% 4.562e+09 perf-stat.i.branch-instructions
1.17 ? 29% -0.3 0.89 ? 20% perf-stat.i.branch-miss-rate%
23408547 ? 2% +49.2% 34925457 perf-stat.i.branch-misses
5.77 ? 22% +3.2 9.00 ? 17% perf-stat.i.cache-miss-rate%
8222112 ? 2% +64.8% 13546123 perf-stat.i.cache-misses
6727 ? 2% -60.5% 2660 perf-stat.i.context-switches
3.50 ? 5% -38.4% 2.15 ? 5% perf-stat.i.cpi
4.18e+10 ? 2% +7.6% 4.497e+10 perf-stat.i.cpu-cycles
5076 ? 2% -34.6% 3320 perf-stat.i.cycles-between-cache-misses
7634922 +121.9% 16944094 perf-stat.i.dTLB-load-misses
3.135e+09 ? 3% +78.2% 5.587e+09 perf-stat.i.dTLB-loads
5.14 ? 2% +1.4 6.57 perf-stat.i.dTLB-store-miss-rate%
94623040 ? 3% +128.1% 2.158e+08 perf-stat.i.dTLB-store-misses
1.713e+09 ? 3% +77.4% 3.039e+09 perf-stat.i.dTLB-stores
82.69 +4.3 87.04 perf-stat.i.iTLB-load-miss-rate%
4833304 ? 3% +121.4% 10702487 ? 3% perf-stat.i.iTLB-load-misses
996162 +57.1% 1564855 perf-stat.i.iTLB-loads
1.251e+10 ? 3% +73.2% 2.167e+10 perf-stat.i.instructions
2571 ? 2% -21.0% 2030 ? 3% perf-stat.i.instructions-per-iTLB-miss
0.30 ? 2% +62.0% 0.48 perf-stat.i.ipc
0.40 ? 2% +7.6% 0.43 perf-stat.i.metric.GHz
1068 ? 2% -75.6% 260.15 ? 10% perf-stat.i.metric.K/sec
73.25 ? 3% +77.9% 130.33 perf-stat.i.metric.M/sec
3223417 ? 3% +124.8% 7247446 perf-stat.i.minor-faults
26.42 ? 7% -10.4 16.06 ? 3% perf-stat.i.node-load-miss-rate%
282161 ? 5% +98.6% 560500 ? 7% perf-stat.i.node-loads
3248470 ? 3% +124.2% 7282664 perf-stat.i.node-stores
3223417 ? 3% +124.8% 7247446 perf-stat.i.page-faults
0.66 -4.9% 0.62 perf-stat.overall.MPKI
0.89 -0.1 0.77 perf-stat.overall.branch-miss-rate%
5.72 ? 22% +3.2 8.95 ? 17% perf-stat.overall.cache-miss-rate%
3.34 -37.9% 2.07 perf-stat.overall.cpi
5085 ? 2% -34.7% 3319 perf-stat.overall.cycles-between-cache-misses
0.24 +0.1 0.30 perf-stat.overall.dTLB-load-miss-rate%
5.24 +1.4 6.63 perf-stat.overall.dTLB-store-miss-rate%
82.90 +4.3 87.23 perf-stat.overall.iTLB-load-miss-rate%
2589 -21.7% 2027 ? 3% perf-stat.overall.instructions-per-iTLB-miss
0.30 +61.0% 0.48 perf-stat.overall.ipc
25.70 ? 4% -10.0 15.74 ? 7% perf-stat.overall.node-load-miss-rate%
0.63 ? 13% -0.3 0.30 ? 7% perf-stat.overall.node-store-miss-rate%
1168062 -23.0% 899539 perf-stat.overall.path-length
2.618e+09 ? 3% +73.6% 4.547e+09 perf-stat.ps.branch-instructions
23334434 ? 2% +49.2% 34805568 perf-stat.ps.branch-misses
8195263 ? 2% +64.8% 13501705 perf-stat.ps.cache-misses
6706 ? 2% -60.5% 2651 perf-stat.ps.context-switches
4.167e+10 ? 2% +7.6% 4.482e+10 perf-stat.ps.cpu-cycles
7610946 +121.9% 16890018 perf-stat.ps.dTLB-load-misses
3.125e+09 ? 3% +78.2% 5.569e+09 perf-stat.ps.dTLB-loads
94332447 ? 3% +128.1% 2.151e+08 perf-stat.ps.dTLB-store-misses
1.707e+09 ? 3% +77.4% 3.029e+09 perf-stat.ps.dTLB-stores
4818281 ? 3% +121.4% 10668153 ? 3% perf-stat.ps.iTLB-load-misses
993104 +57.1% 1559797 perf-stat.ps.iTLB-loads
1.248e+10 ? 3% +73.2% 2.16e+10 perf-stat.ps.instructions
3213492 ? 3% +124.8% 7224439 perf-stat.ps.minor-faults
281299 ? 5% +98.6% 558721 ? 7% perf-stat.ps.node-loads
3238382 ? 3% +124.2% 7259432 perf-stat.ps.node-stores
3213492 ? 3% +124.8% 7224439 perf-stat.ps.page-faults
3.856e+12 +71.1% 6.599e+12 perf-stat.total.instructions
46.83 ? 2% -24.6 22.23 ? 3% perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
47.07 ? 2% -24.4 22.68 ? 3% perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.testcase
16.08 ? 6% -16.1 0.00 perf-profile.calltrace.cycles-pp.lock_mm_and_find_vma.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
14.24 ? 2% -14.2 0.00 perf-profile.calltrace.cycles-pp.down_read_trylock.lock_mm_and_find_vma.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
62.50 -7.9 54.60 ? 2% perf-profile.calltrace.cycles-pp.asm_exc_page_fault.testcase
63.71 -6.9 56.82 ? 2% perf-profile.calltrace.cycles-pp.testcase
6.62 -6.6 0.00 perf-profile.calltrace.cycles-pp.up_read.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
18.65 -6.2 12.49 ? 2% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
20.30 -5.0 15.35 ? 3% perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
1.34 ? 6% -0.2 1.17 ? 4% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
1.24 ? 6% -0.2 1.07 ? 5% perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call
0.84 ? 7% -0.1 0.72 ? 7% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter
0.82 ? 7% -0.1 0.71 ? 7% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state
0.66 ? 7% -0.1 0.59 ? 6% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
0.00 +0.5 0.53 ? 2% perf-profile.calltrace.cycles-pp.xas_descend.xas_load.filemap_get_entry.shmem_get_folio_gfp.shmem_fault
0.00 +0.6 0.56 ? 2% perf-profile.calltrace.cycles-pp.__mod_lruvec_page_state.page_remove_rmap.tlb_flush_rmaps.zap_pte_range.zap_pmd_range
0.00 +0.6 0.56 ? 7% perf-profile.calltrace.cycles-pp.inode_needs_update_time.file_update_time.fault_dirty_shared_page.do_fault.__handle_mm_fault
0.58 ? 4% +0.6 1.22 ? 2% perf-profile.calltrace.cycles-pp.page_remove_rmap.tlb_flush_rmaps.zap_pte_range.zap_pmd_range.unmap_page_range
0.00 +0.6 0.64 ? 5% perf-profile.calltrace.cycles-pp.mtree_range_walk.mas_walk.lock_vma_under_rcu.do_user_addr_fault.exc_page_fault
0.35 ? 70% +0.6 0.99 ? 3% perf-profile.calltrace.cycles-pp.xas_load.filemap_get_entry.shmem_get_folio_gfp.shmem_fault.__do_fault
0.00 +0.7 0.66 ? 5% perf-profile.calltrace.cycles-pp.file_update_time.fault_dirty_shared_page.do_fault.__handle_mm_fault.handle_mm_fault
0.00 +0.7 0.66 ? 13% perf-profile.calltrace.cycles-pp.__mod_lruvec_page_state.folio_add_file_rmap_range.set_pte_range.finish_fault.do_fault
0.64 ? 3% +0.7 1.35 ? 3% perf-profile.calltrace.cycles-pp.__perf_sw_event.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
0.00 +0.7 0.70 ? 3% perf-profile.calltrace.cycles-pp.__pte_offset_map_lock.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault
0.67 ? 4% +0.7 1.39 ? 2% perf-profile.calltrace.cycles-pp.tlb_flush_rmaps.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
0.35 ? 70% +0.7 1.06 ? 4% perf-profile.calltrace.cycles-pp.___perf_sw_event.__perf_sw_event.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
0.36 ? 71% +0.8 1.15 ? 6% perf-profile.calltrace.cycles-pp.__perf_sw_event.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
0.84 ? 4% +0.8 1.67 ? 2% perf-profile.calltrace.cycles-pp.filemap_get_entry.shmem_get_folio_gfp.shmem_fault.__do_fault.do_fault
0.19 ?141% +0.9 1.06 ? 8% perf-profile.calltrace.cycles-pp.folio_add_file_rmap_range.set_pte_range.finish_fault.do_fault.__handle_mm_fault
0.00 +0.9 0.90 ? 3% perf-profile.calltrace.cycles-pp.___perf_sw_event.__perf_sw_event.handle_mm_fault.do_user_addr_fault.exc_page_fault
0.82 ? 11% +1.0 1.80 ? 4% perf-profile.calltrace.cycles-pp.fault_dirty_shared_page.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
1.21 ? 2% +1.2 2.41 ? 2% perf-profile.calltrace.cycles-pp.shmem_get_folio_gfp.shmem_fault.__do_fault.do_fault.__handle_mm_fault
1.32 ? 11% +1.2 2.52 ? 6% perf-profile.calltrace.cycles-pp.set_pte_range.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault
1.48 ? 2% +1.4 2.88 ? 2% perf-profile.calltrace.cycles-pp.shmem_fault.__do_fault.do_fault.__handle_mm_fault.handle_mm_fault
1.41 ? 2% +1.5 2.87 ? 2% perf-profile.calltrace.cycles-pp.sync_regs.asm_exc_page_fault.testcase
1.56 ? 3% +1.5 3.03 ? 2% perf-profile.calltrace.cycles-pp.__do_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
2.65 ? 7% +1.6 4.30 ? 8% perf-profile.calltrace.cycles-pp.lock_vma_under_rcu.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
1.79 ? 8% +1.7 3.50 ? 4% perf-profile.calltrace.cycles-pp.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
2.11 ? 4% +2.3 4.46 ? 3% perf-profile.calltrace.cycles-pp.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region
2.15 ? 4% +2.4 4.54 ? 3% perf-profile.calltrace.cycles-pp.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap
2.15 ? 4% +2.4 4.55 ? 3% perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
2.15 ? 4% +2.4 4.55 ? 3% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap
2.16 ? 5% +2.4 4.56 ? 3% perf-profile.calltrace.cycles-pp.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
2.16 ? 5% +2.4 4.57 ? 3% perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.16 ? 5% +2.4 4.57 ? 3% perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
2.18 ? 5% +2.4 4.58 ? 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap
2.18 ? 5% +2.4 4.58 ? 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
2.18 ? 5% +2.4 4.58 ? 3% perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
2.18 ? 5% +2.4 4.58 ? 3% perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
2.18 ? 5% +2.4 4.58 ? 3% perf-profile.calltrace.cycles-pp.__munmap
3.17 ? 2% +3.2 6.36 ? 2% perf-profile.calltrace.cycles-pp.irqentry_exit_to_user_mode.asm_exc_page_fault.testcase
3.62 ? 3% +3.8 7.43 ? 2% perf-profile.calltrace.cycles-pp.error_entry.testcase
4.88 ? 3% +3.9 8.80 ? 2% perf-profile.calltrace.cycles-pp.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
3.70 ? 3% +4.0 7.66 ? 2% perf-profile.calltrace.cycles-pp.__irqentry_text_end.testcase
46.92 ? 2% -24.6 22.36 ? 3% perf-profile.children.cycles-pp.do_user_addr_fault
47.10 ? 2% -24.4 22.72 ? 3% perf-profile.children.cycles-pp.exc_page_fault
16.11 ? 6% -16.1 0.00 perf-profile.children.cycles-pp.lock_mm_and_find_vma
14.41 ? 2% -14.1 0.31 ? 4% perf-profile.children.cycles-pp.down_read_trylock
57.26 -13.7 43.60 ? 2% perf-profile.children.cycles-pp.asm_exc_page_fault
7.06 -6.8 0.30 ? 3% perf-profile.children.cycles-pp.up_read
18.72 -6.2 12.56 ? 2% perf-profile.children.cycles-pp.__handle_mm_fault
20.36 -4.9 15.45 ? 2% perf-profile.children.cycles-pp.handle_mm_fault
67.14 -3.0 64.11 ? 2% perf-profile.children.cycles-pp.testcase
1.58 ? 5% -0.2 1.39 ? 4% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
1.43 ? 5% -0.2 1.27 ? 4% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
0.98 ? 5% -0.1 0.88 ? 5% perf-profile.children.cycles-pp.hrtimer_interrupt
1.00 ? 5% -0.1 0.90 ? 5% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
0.09 ? 21% -0.1 0.03 ?102% perf-profile.children.cycles-pp.intel_idle
0.20 ? 10% -0.0 0.16 ? 9% perf-profile.children.cycles-pp.__do_softirq
0.15 ? 7% -0.0 0.12 ? 6% perf-profile.children.cycles-pp.access_error
0.06 ? 13% +0.0 0.09 ? 7% perf-profile.children.cycles-pp.irqentry_enter
0.59 ? 2% +0.1 0.64 ? 4% perf-profile.children.cycles-pp.mtree_range_walk
0.04 ? 45% +0.1 0.10 ? 6% perf-profile.children.cycles-pp.perf_swevent_event
0.00 +0.1 0.05 ? 8% perf-profile.children.cycles-pp.__tlb_remove_page_size
0.06 ? 14% +0.1 0.12 ? 8% perf-profile.children.cycles-pp.folio_mapping
0.00 +0.1 0.06 ? 9% perf-profile.children.cycles-pp.llist_add_batch
0.00 +0.1 0.06 ? 9% perf-profile.children.cycles-pp.pte_mkwrite
0.00 +0.1 0.06 ? 13% perf-profile.children.cycles-pp.restore_regs_and_return_to_kernel
0.01 ?223% +0.1 0.08 ? 6% perf-profile.children.cycles-pp.vm_normal_page
0.15 ? 10% +0.1 0.21 ? 7% perf-profile.children.cycles-pp.__pte_offset_map
0.06 ? 7% +0.1 0.13 ? 5% perf-profile.children.cycles-pp.perf_exclude_event
0.09 ? 12% +0.1 0.16 ? 4% perf-profile.children.cycles-pp.error_return
0.00 +0.1 0.08 ? 8% perf-profile.children.cycles-pp.__cond_resched
0.09 ? 9% +0.1 0.18 ? 6% perf-profile.children.cycles-pp.free_swap_cache
0.08 ? 4% +0.1 0.17 ? 10% perf-profile.children.cycles-pp.xas_start
0.10 ? 26% +0.1 0.19 ? 19% perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64
0.09 ? 10% +0.1 0.18 ? 12% perf-profile.children.cycles-pp.__count_memcg_events
0.09 ? 6% +0.1 0.19 ? 3% perf-profile.children.cycles-pp.timestamp_truncate
0.10 ? 9% +0.1 0.21 ? 4% perf-profile.children.cycles-pp.free_pages_and_swap_cache
0.03 ?100% +0.1 0.14 ? 6% perf-profile.children.cycles-pp.native_flush_tlb_local
0.06 ? 19% +0.1 0.17 ? 6% perf-profile.children.cycles-pp.default_send_IPI_mask_sequence_phys
0.08 ? 13% +0.1 0.20 ? 16% perf-profile.children.cycles-pp.cgroup_rstat_updated
0.07 ? 10% +0.1 0.19 ? 4% perf-profile.children.cycles-pp.flush_tlb_func
0.14 ? 11% +0.2 0.29 ? 4% perf-profile.children.cycles-pp.release_pages
0.21 ? 2% +0.2 0.37 ? 2% perf-profile.children.cycles-pp._raw_spin_lock
0.15 ? 10% +0.2 0.31 ? 3% perf-profile.children.cycles-pp.folio_unlock
0.11 ? 10% +0.2 0.28 ? 5% perf-profile.children.cycles-pp.__flush_smp_call_function_queue
0.15 ? 5% +0.2 0.32 ? 5% perf-profile.children.cycles-pp._compound_head
0.01 ?223% +0.2 0.20 ? 5% perf-profile.children.cycles-pp.exit_to_user_mode_prepare
0.11 ? 9% +0.2 0.30 ? 3% perf-profile.children.cycles-pp.__sysvec_call_function
0.19 ? 3% +0.2 0.40 ? 3% perf-profile.children.cycles-pp.__mod_memcg_lruvec_state
0.13 ? 11% +0.2 0.34 ? 5% perf-profile.children.cycles-pp.flush_tlb_mm_range
0.12 ? 11% +0.2 0.34 ? 5% perf-profile.children.cycles-pp.smp_call_function_many_cond
0.12 ? 11% +0.2 0.34 ? 5% perf-profile.children.cycles-pp.on_each_cpu_cond_mask
0.22 ? 13% +0.2 0.44 ? 3% perf-profile.children.cycles-pp.folio_mark_dirty
0.14 ? 9% +0.2 0.38 ? 2% perf-profile.children.cycles-pp.sysvec_call_function
0.19 ? 19% +0.2 0.44 ? 12% perf-profile.children.cycles-pp.__mod_node_page_state
0.25 ? 6% +0.3 0.50 ? 4% perf-profile.children.cycles-pp.tlb_batch_pages_flush
0.29 ? 7% +0.3 0.55 ? 2% perf-profile.children.cycles-pp.xas_descend
0.28 ? 13% +0.3 0.57 ? 7% perf-profile.children.cycles-pp.inode_needs_update_time
0.26 ? 17% +0.3 0.58 ? 10% perf-profile.children.cycles-pp.__mod_lruvec_state
0.34 ? 10% +0.3 0.67 ? 5% perf-profile.children.cycles-pp.file_update_time
0.27 ? 10% +0.3 0.60 ? 3% perf-profile.children.cycles-pp.noop_dirty_folio
0.36 ? 2% +0.4 0.72 ? 3% perf-profile.children.cycles-pp.__pte_offset_map_lock
0.24 ? 6% +0.4 0.66 ? 4% perf-profile.children.cycles-pp.asm_sysvec_call_function
0.53 ? 5% +0.5 1.04 ? 3% perf-profile.children.cycles-pp.xas_load
0.47 ? 16% +0.6 1.08 ? 8% perf-profile.children.cycles-pp.folio_add_file_rmap_range
0.59 ? 4% +0.6 1.23 ? 2% perf-profile.children.cycles-pp.page_remove_rmap
0.60 ? 11% +0.7 1.30 ? 6% perf-profile.children.cycles-pp.__mod_lruvec_page_state
0.67 ? 4% +0.7 1.40 ? 2% perf-profile.children.cycles-pp.tlb_flush_rmaps
0.84 ? 3% +0.8 1.68 ? 2% perf-profile.children.cycles-pp.filemap_get_entry
0.84 ? 10% +1.0 1.84 ? 4% perf-profile.children.cycles-pp.fault_dirty_shared_page
0.94 ? 2% +1.1 2.00 ? 3% perf-profile.children.cycles-pp.___perf_sw_event
1.22 ? 2% +1.2 2.43 ? 2% perf-profile.children.cycles-pp.shmem_get_folio_gfp
1.33 ? 12% +1.2 2.54 ? 6% perf-profile.children.cycles-pp.set_pte_range
1.18 ? 4% +1.3 2.51 ? 2% perf-profile.children.cycles-pp.__perf_sw_event
1.48 ? 2% +1.4 2.90 ? 2% perf-profile.children.cycles-pp.shmem_fault
1.56 ? 3% +1.5 3.03 ? 2% perf-profile.children.cycles-pp.__do_fault
1.46 ? 2% +1.5 2.98 ? 2% perf-profile.children.cycles-pp.sync_regs
2.66 ? 7% +1.7 4.31 ? 8% perf-profile.children.cycles-pp.lock_vma_under_rcu
1.82 ? 8% +1.7 3.56 ? 4% perf-profile.children.cycles-pp.finish_fault
1.98 ? 2% +2.0 4.00 ? 2% perf-profile.children.cycles-pp.native_irq_return_iret
2.29 ? 5% +2.4 4.68 ? 3% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
2.28 ? 5% +2.4 4.68 ? 3% perf-profile.children.cycles-pp.do_syscall_64
2.15 ? 4% +2.4 4.55 ? 3% perf-profile.children.cycles-pp.unmap_vmas
2.15 ? 4% +2.4 4.55 ? 3% perf-profile.children.cycles-pp.unmap_page_range
2.15 ? 4% +2.4 4.55 ? 3% perf-profile.children.cycles-pp.zap_pmd_range
2.15 ? 4% +2.4 4.55 ? 3% perf-profile.children.cycles-pp.zap_pte_range
2.17 ? 4% +2.4 4.57 ? 3% perf-profile.children.cycles-pp.do_vmi_align_munmap
2.17 ? 4% +2.4 4.57 ? 3% perf-profile.children.cycles-pp.do_vmi_munmap
2.16 ? 5% +2.4 4.56 ? 3% perf-profile.children.cycles-pp.unmap_region
2.18 ? 4% +2.4 4.58 ? 3% perf-profile.children.cycles-pp.__vm_munmap
2.18 ? 5% +2.4 4.58 ? 3% perf-profile.children.cycles-pp.__x64_sys_munmap
2.18 ? 5% +2.4 4.58 ? 3% perf-profile.children.cycles-pp.__munmap
3.23 ? 2% +3.3 6.52 ? 2% perf-profile.children.cycles-pp.irqentry_exit_to_user_mode
3.67 ? 3% +3.8 7.51 ? 2% perf-profile.children.cycles-pp.error_entry
4.93 ? 3% +4.0 8.89 ? 2% perf-profile.children.cycles-pp.do_fault
3.71 ? 3% +4.0 7.66 ? 2% perf-profile.children.cycles-pp.__irqentry_text_end
14.34 ? 2% -14.0 0.31 ? 4% perf-profile.self.cycles-pp.down_read_trylock
13.36 ? 3% -10.0 3.32 ? 5% perf-profile.self.cycles-pp.__handle_mm_fault
7.01 -6.7 0.30 ? 3% perf-profile.self.cycles-pp.up_read
0.09 ? 21% -0.1 0.03 ?102% perf-profile.self.cycles-pp.intel_idle
0.12 ? 5% -0.0 0.09 ? 9% perf-profile.self.cycles-pp.pte_offset_map_nolock
0.14 ? 4% -0.0 0.12 ? 7% perf-profile.self.cycles-pp.access_error
0.04 ? 44% +0.0 0.08 ? 8% perf-profile.self.cycles-pp.file_update_time
0.06 ? 13% +0.0 0.11 ? 6% perf-profile.self.cycles-pp.__count_memcg_events
0.59 ? 2% +0.0 0.63 ? 4% perf-profile.self.cycles-pp.mtree_range_walk
0.03 ?100% +0.1 0.08 ? 13% perf-profile.self.cycles-pp.__do_fault
0.04 ? 45% +0.1 0.10 ? 9% perf-profile.self.cycles-pp.perf_swevent_event
0.00 +0.1 0.05 ? 8% perf-profile.self.cycles-pp.__tlb_remove_page_size
0.00 +0.1 0.05 ? 8% perf-profile.self.cycles-pp.flush_tlb_func
0.05 ? 7% +0.1 0.11 ? 8% perf-profile.self.cycles-pp.perf_exclude_event
0.00 +0.1 0.06 ? 11% perf-profile.self.cycles-pp.restore_regs_and_return_to_kernel
0.00 +0.1 0.06 ? 15% perf-profile.self.cycles-pp.irqentry_enter
0.00 +0.1 0.06 ? 9% perf-profile.self.cycles-pp.llist_add_batch
0.00 +0.1 0.06 ? 9% perf-profile.self.cycles-pp.pte_mkwrite
0.05 ? 45% +0.1 0.11 ? 6% perf-profile.self.cycles-pp.folio_mapping
0.14 ? 10% +0.1 0.20 ? 8% perf-profile.self.cycles-pp.__pte_offset_map
0.06 ? 11% +0.1 0.13 ? 6% perf-profile.self.cycles-pp.error_return
0.00 +0.1 0.07 ? 10% perf-profile.self.cycles-pp.vm_normal_page
0.06 ? 11% +0.1 0.14 ? 8% perf-profile.self.cycles-pp.__mod_lruvec_state
0.08 ? 8% +0.1 0.16 ? 6% perf-profile.self.cycles-pp.free_swap_cache
0.00 +0.1 0.08 ? 8% perf-profile.self.cycles-pp.smp_call_function_many_cond
0.08 ? 6% +0.1 0.16 ? 11% perf-profile.self.cycles-pp.xas_start
0.10 ? 26% +0.1 0.18 ? 20% perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64
0.09 ? 9% +0.1 0.18 ? 5% perf-profile.self.cycles-pp.tlb_flush_rmaps
0.08 ? 5% +0.1 0.18 ? 3% perf-profile.self.cycles-pp.timestamp_truncate
0.10 ? 14% +0.1 0.20 ? 4% perf-profile.self.cycles-pp.inode_needs_update_time
0.06 ? 19% +0.1 0.17 ? 6% perf-profile.self.cycles-pp.default_send_IPI_mask_sequence_phys
0.03 ?100% +0.1 0.14 ? 7% perf-profile.self.cycles-pp.native_flush_tlb_local
0.08 ? 12% +0.1 0.19 ? 17% perf-profile.self.cycles-pp.cgroup_rstat_updated
0.10 ? 4% +0.1 0.23 ? 7% perf-profile.self.cycles-pp._compound_head
0.13 ? 7% +0.1 0.26 ? 4% perf-profile.self.cycles-pp.exc_page_fault
0.13 ? 5% +0.1 0.27 ? 3% perf-profile.self.cycles-pp.__mod_memcg_lruvec_state
0.14 ? 10% +0.1 0.28 ? 5% perf-profile.self.cycles-pp.release_pages
0.14 ? 4% +0.1 0.29 ? 5% perf-profile.self.cycles-pp.__pte_offset_map_lock
0.12 ? 7% +0.1 0.27 ? 4% perf-profile.self.cycles-pp.finish_fault
0.14 ? 9% +0.2 0.29 ? 2% perf-profile.self.cycles-pp.folio_unlock
0.21 ? 2% +0.2 0.37 ? 3% perf-profile.self.cycles-pp._raw_spin_lock
0.16 ? 14% +0.2 0.32 ? 5% perf-profile.self.cycles-pp.folio_mark_dirty
0.17 ? 9% +0.2 0.34 ? 3% perf-profile.self.cycles-pp.xas_load
0.18 ? 8% +0.2 0.36 ? 5% perf-profile.self.cycles-pp.asm_exc_page_fault
0.15 ? 15% +0.2 0.33 ? 7% perf-profile.self.cycles-pp.__mod_lruvec_page_state
0.27 ? 11% +0.2 0.45 ? 8% perf-profile.self.cycles-pp.do_fault
0.00 +0.2 0.18 ? 5% perf-profile.self.cycles-pp.exit_to_user_mode_prepare
0.27 ? 3% +0.2 0.47 ? 6% perf-profile.self.cycles-pp.shmem_fault
0.16 ? 18% +0.2 0.38 ? 8% perf-profile.self.cycles-pp.fault_dirty_shared_page
0.18 ? 6% +0.2 0.40 ? 5% perf-profile.self.cycles-pp.folio_add_file_rmap_range
0.19 ? 20% +0.2 0.42 ? 14% perf-profile.self.cycles-pp.__mod_node_page_state
0.27 ? 7% +0.2 0.51 ? 3% perf-profile.self.cycles-pp.xas_descend
0.24 ? 12% +0.3 0.51 ? 9% perf-profile.self.cycles-pp.__perf_sw_event
0.34 ? 4% +0.3 0.61 ? 3% perf-profile.self.cycles-pp.do_user_addr_fault
0.25 ? 9% +0.3 0.58 ? 4% perf-profile.self.cycles-pp.noop_dirty_folio
0.28 ? 5% +0.3 0.60 ? 5% perf-profile.self.cycles-pp.set_pte_range
0.28 ? 5% +0.3 0.60 ? 4% perf-profile.self.cycles-pp.page_remove_rmap
0.34 ? 4% +0.3 0.66 ? 3% perf-profile.self.cycles-pp.shmem_get_folio_gfp
0.32 ? 3% +0.3 0.65 ? 3% perf-profile.self.cycles-pp.filemap_get_entry
0.66 ? 5% +0.7 1.39 ? 3% perf-profile.self.cycles-pp.zap_pte_range
0.82 ? 3% +0.9 1.76 ? 3% perf-profile.self.cycles-pp.___perf_sw_event
1.46 ? 2% +1.5 2.98 ? 2% perf-profile.self.cycles-pp.sync_regs
1.97 ? 2% +2.0 3.99 ? 2% perf-profile.self.cycles-pp.native_irq_return_iret
3.20 ? 2% +3.1 6.33 ? 2% perf-profile.self.cycles-pp.irqentry_exit_to_user_mode
3.65 ? 3% +3.8 7.47 ? 2% perf-profile.self.cycles-pp.error_entry
3.71 ? 3% +4.0 7.66 ? 2% perf-profile.self.cycles-pp.__irqentry_text_end
5.82 ? 2% +6.4 12.22 ? 2% perf-profile.self.cycles-pp.testcase
***************************************************************************************************
lkp-skl-fpga01: 104 threads 2 sockets (Skylake) with 192G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-12/performance/x86_64-rhel-8.3/process/16/debian-11.1-x86_64-20220510.cgz/lkp-skl-fpga01/page_fault3/will-it-scale
commit:
164b06f238 ("mm: call wp_page_copy() under the VMA lock")
4ed4379881 ("mm: handle shared faults under the VMA lock")
164b06f238b98631 4ed4379881aa62588aba6442a9f
---------------- ---------------------------
%stddev %change %stddev
\ | \
3.93 ? 9% +0.6 4.48 ? 3% mpstat.cpu.all.usr%
69443 ? 37% -43.5% 39209 ? 52% numa-numastat.node0.other_node
69443 ? 37% -43.5% 39209 ? 52% numa-vmstat.node0.numa_other
815.58 ? 4% -13.9% 702.42 ? 6% sched_debug.cpu.nr_switches.min
0.17 -11.8% 0.15 turbostat.IPC
7829312 +7.8% 8442054 will-it-scale.16.processes
489331 +7.8% 527628 will-it-scale.per_process_ops
7829312 +7.8% 8442054 will-it-scale.workload
6054588 +5.6% 6393936 proc-vmstat.numa_hit
5946949 +5.7% 6286318 proc-vmstat.numa_local
6138630 +5.6% 6479594 proc-vmstat.pgalloc_normal
2.356e+09 +7.8% 2.541e+09 proc-vmstat.pgfault
6094218 +5.6% 6435293 proc-vmstat.pgfree
33370577 ? 5% +8.1% 36086535 ? 2% perf-stat.i.branch-misses
13591855 ? 6% +9.3% 14849901 ? 3% perf-stat.i.cache-misses
87506837 +2.6% 89773400 perf-stat.i.cache-references
9248232 ? 6% +10.3% 10201074 ? 3% perf-stat.i.dTLB-load-misses
4.89 ? 8% +1.4 6.25 ? 3% perf-stat.i.dTLB-store-miss-rate%
2.039e+08 ? 9% +14.0% 2.324e+08 ? 3% perf-stat.i.dTLB-store-misses
2165 ? 5% -18.8% 1758 ? 7% perf-stat.i.instructions-per-iTLB-miss
7100967 ? 9% +13.9% 8087600 ? 3% perf-stat.i.minor-faults
7137308 ? 9% +13.9% 8128127 ? 3% perf-stat.i.node-stores
7100971 ? 9% +13.9% 8087600 ? 3% perf-stat.i.page-faults
0.51 ? 3% +21.1% 0.62 perf-stat.overall.MPKI
0.60 ? 4% +0.1 0.72 perf-stat.overall.branch-miss-rate%
1.64 +16.4% 1.91 perf-stat.overall.cpi
0.14 ? 3% +0.0 0.17 perf-stat.overall.dTLB-load-miss-rate%
5.33 +1.2 6.49 perf-stat.overall.dTLB-store-miss-rate%
2276 ? 5% -21.9% 1779 ? 6% perf-stat.overall.instructions-per-iTLB-miss
0.61 -14.1% 0.52 perf-stat.overall.ipc
1126412 -20.9% 890493 perf-stat.overall.path-length
33278957 ? 4% +8.1% 35982000 ? 2% perf-stat.ps.branch-misses
13557468 ? 6% +9.2% 14806522 ? 3% perf-stat.ps.cache-misses
87230707 +2.6% 89485467 perf-stat.ps.cache-references
9225940 ? 6% +10.3% 10171834 ? 3% perf-stat.ps.dTLB-load-misses
2.035e+08 ? 9% +13.9% 2.318e+08 ? 3% perf-stat.ps.dTLB-store-misses
7085678 ? 9% +13.8% 8065196 ? 3% perf-stat.ps.minor-faults
7121860 ? 9% +13.8% 8105529 ? 3% perf-stat.ps.node-stores
7085683 ? 9% +13.8% 8065196 ? 3% perf-stat.ps.page-faults
8.819e+12 -14.8% 7.518e+12 perf-stat.total.instructions
23.48 ? 2% -3.4 20.08 perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.testcase
22.94 ? 2% -3.3 19.65 perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
16.46 ? 2% -1.6 14.84 perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
12.98 ? 2% -1.1 11.92 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
0.58 ? 2% +0.0 0.62 perf-profile.calltrace.cycles-pp.__mod_lruvec_page_state.page_remove_rmap.tlb_flush_rmaps.zap_pte_range.zap_pmd_range
0.59 ? 6% +0.1 0.64 ? 3% perf-profile.calltrace.cycles-pp.xas_descend.xas_load.filemap_get_entry.shmem_get_folio_gfp.shmem_fault
0.53 ? 4% +0.1 0.59 ? 3% perf-profile.calltrace.cycles-pp.inode_needs_update_time.file_update_time.fault_dirty_shared_page.do_fault.__handle_mm_fault
1.08 ? 2% +0.1 1.14 ? 3% perf-profile.calltrace.cycles-pp.___perf_sw_event.__perf_sw_event.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
0.64 ? 4% +0.1 0.71 ? 2% perf-profile.calltrace.cycles-pp.file_update_time.fault_dirty_shared_page.do_fault.__handle_mm_fault.handle_mm_fault
1.05 ? 4% +0.1 1.12 perf-profile.calltrace.cycles-pp.xas_load.filemap_get_entry.shmem_get_folio_gfp.shmem_fault.__do_fault
0.76 ? 4% +0.1 0.86 ? 3% perf-profile.calltrace.cycles-pp.__mod_lruvec_page_state.folio_add_file_rmap_range.set_pte_range.finish_fault.do_fault
0.92 ? 2% +0.1 1.01 perf-profile.calltrace.cycles-pp.___perf_sw_event.__perf_sw_event.handle_mm_fault.do_user_addr_fault.exc_page_fault
1.34 ? 3% +0.1 1.43 ? 3% perf-profile.calltrace.cycles-pp.__perf_sw_event.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
0.71 ? 2% +0.1 0.81 ? 3% perf-profile.calltrace.cycles-pp.__pte_offset_map_lock.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault
0.99 ? 3% +0.1 1.09 perf-profile.calltrace.cycles-pp.mas_walk.lock_vma_under_rcu.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
1.22 ? 2% +0.1 1.34 perf-profile.calltrace.cycles-pp.page_remove_rmap.tlb_flush_rmaps.zap_pte_range.zap_pmd_range.unmap_page_range
1.24 ? 2% +0.1 1.36 perf-profile.calltrace.cycles-pp.__perf_sw_event.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
1.40 ? 2% +0.1 1.53 perf-profile.calltrace.cycles-pp.tlb_flush_rmaps.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
1.17 ? 4% +0.1 1.30 ? 3% perf-profile.calltrace.cycles-pp.folio_add_file_rmap_range.set_pte_range.finish_fault.do_fault.__handle_mm_fault
1.76 ? 3% +0.1 1.89 perf-profile.calltrace.cycles-pp.filemap_get_entry.shmem_get_folio_gfp.shmem_fault.__do_fault.do_fault
1.93 ? 3% +0.2 2.10 perf-profile.calltrace.cycles-pp.fault_dirty_shared_page.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
2.52 ? 2% +0.2 2.72 perf-profile.calltrace.cycles-pp.shmem_get_folio_gfp.shmem_fault.__do_fault.do_fault.__handle_mm_fault
0.34 ? 70% +0.2 0.55 ? 3% perf-profile.calltrace.cycles-pp.tlb_batch_pages_flush.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
2.30 ? 2% +0.2 2.51 ? 2% perf-profile.calltrace.cycles-pp.set_pte_range.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault
1.86 ? 3% +0.2 2.08 perf-profile.calltrace.cycles-pp.lock_vma_under_rcu.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
3.02 ? 2% +0.2 3.26 perf-profile.calltrace.cycles-pp.sync_regs.asm_exc_page_fault.testcase
3.31 ? 2% +0.2 3.56 perf-profile.calltrace.cycles-pp.__do_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
3.14 ? 2% +0.2 3.40 perf-profile.calltrace.cycles-pp.shmem_fault.__do_fault.do_fault.__handle_mm_fault.handle_mm_fault
3.32 +0.3 3.62 ? 2% perf-profile.calltrace.cycles-pp.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
4.22 ? 2% +0.4 4.60 perf-profile.calltrace.cycles-pp.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region
9.50 ? 2% +0.4 9.88 perf-profile.calltrace.cycles-pp.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
4.32 ? 2% +0.4 4.71 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap
4.30 ? 2% +0.4 4.70 perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
4.30 ? 2% +0.4 4.70 perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap
4.30 ? 2% +0.4 4.70 perf-profile.calltrace.cycles-pp.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap
4.32 ? 2% +0.4 4.71 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
4.32 ? 2% +0.4 4.71 perf-profile.calltrace.cycles-pp.__munmap
4.32 ? 2% +0.4 4.71 perf-profile.calltrace.cycles-pp.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
4.32 ? 2% +0.4 4.71 perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
4.32 ? 2% +0.4 4.71 perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
4.32 ? 2% +0.4 4.71 perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
4.32 ? 2% +0.4 4.71 perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
6.61 ? 2% +0.6 7.21 ? 2% perf-profile.calltrace.cycles-pp.irqentry_exit_to_user_mode.asm_exc_page_fault.testcase
7.67 ? 2% +0.7 8.39 perf-profile.calltrace.cycles-pp.error_entry.testcase
7.80 ? 2% +0.8 8.57 perf-profile.calltrace.cycles-pp.__irqentry_text_end.testcase
23.14 ? 2% -3.4 19.72 perf-profile.children.cycles-pp.do_user_addr_fault
23.52 ? 2% -3.4 20.12 perf-profile.children.cycles-pp.exc_page_fault
16.58 ? 2% -1.6 14.99 perf-profile.children.cycles-pp.handle_mm_fault
13.06 ? 2% -1.1 11.97 perf-profile.children.cycles-pp.__handle_mm_fault
1.38 ? 5% -0.6 0.75 perf-profile.children.cycles-pp.mtree_range_walk
1.05 ? 5% -0.6 0.45 ? 10% perf-profile.children.cycles-pp.handle_pte_fault
0.58 ? 5% -0.3 0.25 ? 6% perf-profile.children.cycles-pp.pte_offset_map_nolock
0.45 ? 3% -0.3 0.14 ? 7% perf-profile.children.cycles-pp.access_error
0.65 ? 2% -0.3 0.36 ? 4% perf-profile.children.cycles-pp.down_read_trylock
0.62 ? 5% -0.3 0.34 ? 4% perf-profile.children.cycles-pp.up_read
0.33 ? 4% -0.1 0.24 ? 4% perf-profile.children.cycles-pp.__pte_offset_map
0.20 ? 4% +0.0 0.22 ? 6% perf-profile.children.cycles-pp.exit_to_user_mode_prepare
0.42 ? 3% +0.0 0.45 ? 4% perf-profile.children.cycles-pp.percpu_counter_add_batch
0.16 ? 4% +0.0 0.18 ? 6% perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64
0.30 ? 2% +0.0 0.33 ? 2% perf-profile.children.cycles-pp.release_pages
0.38 ? 5% +0.0 0.42 ? 5% perf-profile.children.cycles-pp.__mod_memcg_lruvec_state
0.50 ? 3% +0.0 0.54 ? 3% perf-profile.children.cycles-pp.folio_mark_dirty
0.51 ? 3% +0.0 0.56 ? 3% perf-profile.children.cycles-pp.tlb_batch_pages_flush
0.35 ? 4% +0.1 0.40 ? 4% perf-profile.children.cycles-pp._raw_spin_lock
0.60 ? 6% +0.1 0.66 ? 2% perf-profile.children.cycles-pp.xas_descend
0.55 ? 3% +0.1 0.60 ? 3% perf-profile.children.cycles-pp.inode_needs_update_time
0.54 ? 4% +0.1 0.60 ? 3% perf-profile.children.cycles-pp.__mod_node_page_state
0.65 ? 4% +0.1 0.72 ? 2% perf-profile.children.cycles-pp.file_update_time
1.10 ? 4% +0.1 1.17 perf-profile.children.cycles-pp.xas_load
0.69 ? 2% +0.1 0.77 ? 2% perf-profile.children.cycles-pp.__mod_lruvec_state
1.00 ? 3% +0.1 1.09 perf-profile.children.cycles-pp.mas_walk
0.73 ? 2% +0.1 0.83 ? 3% perf-profile.children.cycles-pp.__pte_offset_map_lock
1.24 ? 2% +0.1 1.36 perf-profile.children.cycles-pp.page_remove_rmap
1.41 ? 2% +0.1 1.54 perf-profile.children.cycles-pp.tlb_flush_rmaps
1.18 ? 4% +0.1 1.31 ? 3% perf-profile.children.cycles-pp.folio_add_file_rmap_range
1.77 ? 3% +0.1 1.90 perf-profile.children.cycles-pp.filemap_get_entry
1.43 ? 3% +0.1 1.57 ? 2% perf-profile.children.cycles-pp.__mod_lruvec_page_state
2.03 +0.2 2.19 perf-profile.children.cycles-pp.___perf_sw_event
1.97 ? 3% +0.2 2.14 perf-profile.children.cycles-pp.fault_dirty_shared_page
2.54 ? 2% +0.2 2.74 perf-profile.children.cycles-pp.shmem_get_folio_gfp
2.31 ? 2% +0.2 2.53 ? 2% perf-profile.children.cycles-pp.set_pte_range
2.61 ? 2% +0.2 2.83 perf-profile.children.cycles-pp.__perf_sw_event
1.86 ? 3% +0.2 2.09 perf-profile.children.cycles-pp.lock_vma_under_rcu
3.33 ? 2% +0.2 3.57 perf-profile.children.cycles-pp.__do_fault
3.10 ? 2% +0.3 3.36 ? 2% perf-profile.children.cycles-pp.sync_regs
3.16 ? 2% +0.3 3.41 perf-profile.children.cycles-pp.shmem_fault
3.39 +0.3 3.70 ? 2% perf-profile.children.cycles-pp.finish_fault
9.64 ? 2% +0.4 9.99 perf-profile.children.cycles-pp.do_fault
4.32 ? 2% +0.4 4.71 perf-profile.children.cycles-pp.__munmap
4.32 ? 2% +0.4 4.71 perf-profile.children.cycles-pp.do_vmi_munmap
4.32 ? 2% +0.4 4.71 perf-profile.children.cycles-pp.do_vmi_align_munmap
4.30 ? 2% +0.4 4.70 perf-profile.children.cycles-pp.unmap_vmas
4.30 ? 2% +0.4 4.70 perf-profile.children.cycles-pp.unmap_page_range
4.30 ? 2% +0.4 4.70 perf-profile.children.cycles-pp.zap_pmd_range
4.30 ? 2% +0.4 4.70 perf-profile.children.cycles-pp.zap_pte_range
4.40 ? 2% +0.4 4.80 perf-profile.children.cycles-pp.do_syscall_64
4.32 ? 2% +0.4 4.71 perf-profile.children.cycles-pp.__vm_munmap
4.32 ? 2% +0.4 4.71 perf-profile.children.cycles-pp.__x64_sys_munmap
4.32 ? 2% +0.4 4.71 perf-profile.children.cycles-pp.unmap_region
4.41 ? 2% +0.4 4.80 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
4.07 +0.4 4.47 perf-profile.children.cycles-pp.native_irq_return_iret
6.72 ? 2% +0.6 7.32 ? 2% perf-profile.children.cycles-pp.irqentry_exit_to_user_mode
7.75 ? 2% +0.7 8.48 perf-profile.children.cycles-pp.error_entry
7.80 ? 2% +0.8 8.57 perf-profile.children.cycles-pp.__irqentry_text_end
2.35 ? 2% -0.8 1.51 ? 3% perf-profile.self.cycles-pp.__handle_mm_fault
1.37 ? 5% -0.6 0.75 perf-profile.self.cycles-pp.mtree_range_walk
1.93 ? 5% -0.6 1.36 ? 5% perf-profile.self.cycles-pp.handle_mm_fault
0.63 ? 2% -0.3 0.36 ? 3% perf-profile.self.cycles-pp.down_read_trylock
0.47 ? 6% -0.3 0.20 ? 17% perf-profile.self.cycles-pp.handle_pte_fault
0.90 ? 3% -0.3 0.64 ? 3% perf-profile.self.cycles-pp.do_user_addr_fault
0.35 ? 7% -0.2 0.12 ? 11% perf-profile.self.cycles-pp.pte_offset_map_nolock
0.57 ? 5% -0.2 0.34 ? 4% perf-profile.self.cycles-pp.up_read
0.37 ? 4% -0.2 0.14 ? 7% perf-profile.self.cycles-pp.access_error
0.70 ? 3% -0.1 0.58 ? 3% perf-profile.self.cycles-pp.do_fault
0.31 ? 4% -0.1 0.23 ? 4% perf-profile.self.cycles-pp.__pte_offset_map
0.29 +0.0 0.32 perf-profile.self.cycles-pp.release_pages
0.16 ? 4% +0.0 0.18 ? 6% perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64
0.26 ? 4% +0.0 0.30 ? 4% perf-profile.self.cycles-pp.__mod_memcg_lruvec_state
0.40 ? 4% +0.0 0.44 ? 4% perf-profile.self.cycles-pp.folio_add_file_rmap_range
0.29 ? 3% +0.0 0.33 ? 5% perf-profile.self.cycles-pp.__pte_offset_map_lock
0.42 ? 4% +0.0 0.47 ? 4% perf-profile.self.cycles-pp.fault_dirty_shared_page
0.35 ? 3% +0.1 0.40 ? 3% perf-profile.self.cycles-pp._raw_spin_lock
0.60 ? 3% +0.1 0.66 ? 2% perf-profile.self.cycles-pp.set_pte_range
0.69 ? 2% +0.1 0.75 ? 2% perf-profile.self.cycles-pp.shmem_get_folio_gfp
0.52 ? 3% +0.1 0.58 ? 3% perf-profile.self.cycles-pp.__mod_node_page_state
0.59 ? 5% +0.1 0.66 ? 2% perf-profile.self.cycles-pp.page_remove_rmap
0.54 ? 5% +0.1 0.63 ? 2% perf-profile.self.cycles-pp.lock_vma_under_rcu
1.43 +0.1 1.54 ? 2% perf-profile.self.cycles-pp.zap_pte_range
1.80 +0.1 1.94 perf-profile.self.cycles-pp.___perf_sw_event
3.10 ? 2% +0.3 3.36 ? 2% perf-profile.self.cycles-pp.sync_regs
4.06 +0.4 4.46 perf-profile.self.cycles-pp.native_irq_return_iret
6.52 ? 2% +0.6 7.10 ? 2% perf-profile.self.cycles-pp.irqentry_exit_to_user_mode
7.72 ? 2% +0.7 8.44 perf-profile.self.cycles-pp.error_entry
7.80 ? 2% +0.8 8.57 perf-profile.self.cycles-pp.__irqentry_text_end
12.39 +1.1 13.50 perf-profile.self.cycles-pp.testcase
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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https://github.com/intel/lkp-tests/wiki