Re: [PATCH v2 8/8] ext4: enable large folio for regular file

kernel test robot
2025-05-16T09:05:46Z

Hello,

kernel test robot noticed a 37.7% improvement of fsmark.files_per_sec on:

commit: 34696dd792d839c46a280c720ab28aab2db1f4bf ("[PATCH v2 8/8] ext4: enable large folio for regular file")
url: https://github.com/intel-lab-lkp/linux/commits/Zhang-Yi/ext4-make-ext4_mpage_readpages-support-large-folios/20250512-144942
base: https://git.kernel.org/cgit/linux/kernel/git/tytso/ext4.git dev
patch link: https://lore.kernel.org/all/20250512063319.3539411-9-yi.zhang@huaweicloud.com/
patch subject: [PATCH v2 8/8] ext4: enable large folio for regular file

testcase: fsmark
config: x86_64-rhel-9.4
compiler: gcc-12
test machine: 96 threads 2 sockets Intel(R) Xeon(R) Platinum 8260L CPU @ 2.40GHz (Cascade Lake) with 128G memory
parameters:

iterations: 1x
nr_threads: 1t
disk: 1BRD_48G
fs: ext4
filesize: 4M
test_size: 24G
sync_method: NoSync
cpufreq_governor: performance

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

The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250516/202505161418.ec0d753f-lkp@intel.com

=========================================================================================
compiler/cpufreq_governor/disk/filesize/fs/iterations/kconfig/nr_threads/rootfs/sync_method/tbox_group/test_size/testcase:
gcc-12/performance/1BRD_48G/4M/ext4/1x/x86_64-rhel-9.4/1t/debian-12-x86_64-20240206.cgz/NoSync/lkp-csl-2sp3/24G/fsmark

commit:
0368e6caf2 ("ext4: make online defragmentation support large folios")
34696dd792 ("ext4: enable large folio for regular file")

0368e6caf2d6ff21 34696dd792d839c46a280c720ab
---------------- ---------------------------
%stddev %change %stddev
\ | \
1.964e+09 ± 3% -14.9% 1.671e+09 ± 8% cpuidle..time
3825 ± 20% -24.6% 2884 ± 17% sched_debug.cpu.avg_idle.min
69081 -3.2% 66894 fsmark.app_overhead
529.15 +37.7% 728.75 fsmark.files_per_sec
70.33 ± 3% -11.6% 62.17 fsmark.time.percent_of_cpu_this_job_got
3.50 ± 54% +109.5% 7.33 ± 21% perf-sched.wait_and_delay.count.schedule_hrtimeout_range.ep_poll.do_epoll_wait.__x64_sys_epoll_wait
4.00 ± 14% +21.0% 4.84 ± 21% perf-sched.wait_and_delay.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
0.91 ± 12% -14.1% 0.78 ± 8% perf-sched.wait_time.max.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
691923 ± 25% -62.0% 263011 ± 18% proc-vmstat.numa_foreign
12650103 ± 4% -35.5% 8153366 proc-vmstat.numa_hit
12607229 ± 3% -36.1% 8052736 proc-vmstat.numa_local
707756 ± 22% -62.8% 263011 ± 18% proc-vmstat.numa_miss
806083 ± 25% -55.0% 362335 ± 13% proc-vmstat.numa_other
231973 -3.4% 224103 proc-vmstat.pgfault
3.86 ± 2% +37.3% 5.29 ± 9% perf-stat.i.MPKI
1.889e+09 -11.1% 1.679e+09 ± 2% perf-stat.i.branch-instructions
3.60 ± 3% +0.3 3.91 ± 5% perf-stat.i.branch-miss-rate%
34677646 +17.9% 40883980 ± 8% perf-stat.i.cache-misses
2003 ± 2% +10.2% 2209 ± 4% perf-stat.i.context-switches
1.08 +14.4% 1.24 ± 4% perf-stat.i.cpi
9.762e+09 -10.6% 8.728e+09 ± 2% perf-stat.i.instructions
0.98 -9.7% 0.89 ± 4% perf-stat.i.ipc
7068 ± 3% +14.7% 8105 ± 6% perf-stat.i.minor-faults
7068 ± 3% +14.7% 8105 ± 6% perf-stat.i.page-faults
3.56 +31.5% 4.68 ± 6% perf-stat.overall.MPKI
3.67 ± 2% +0.4 4.06 ± 2% perf-stat.overall.branch-miss-rate%
1.04 +10.9% 1.15 ± 2% perf-stat.overall.cpi
291.68 -15.5% 246.52 ± 4% perf-stat.overall.cycles-between-cache-misses
0.96 -9.8% 0.87 ± 2% perf-stat.overall.ipc
1.795e+09 -12.0% 1.58e+09 perf-stat.ps.branch-instructions
65831109 -2.5% 64181687 perf-stat.ps.branch-misses
32991347 +16.6% 38460099 ± 7% perf-stat.ps.cache-misses
1905 ± 2% +9.0% 2077 ± 4% perf-stat.ps.context-switches
9.28e+09 -11.5% 8.215e+09 ± 2% perf-stat.ps.instructions
6695 ± 2% +13.6% 7604 ± 5% perf-stat.ps.minor-faults
6696 ± 2% +13.6% 7604 ± 5% perf-stat.ps.page-faults
1.918e+11 ± 2% -25.3% 1.432e+11 ± 7% perf-stat.total.instructions
24.59 ± 5% -7.7 16.86 perf-profile.calltrace.cycles-pp.ext4_buffered_write_iter.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
24.39 ± 5% -7.7 16.68 perf-profile.calltrace.cycles-pp.generic_perform_write.ext4_buffered_write_iter.vfs_write.ksys_write.do_syscall_64
30.60 -6.3 24.26 perf-profile.calltrace.cycles-pp.write
29.63 -6.3 23.36 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write
29.39 -6.3 23.12 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
29.60 -6.3 23.34 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
29.50 -6.3 23.24 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
6.31 ± 3% -5.1 1.24 ± 6% perf-profile.calltrace.cycles-pp.ext4_da_do_write_end.generic_perform_write.ext4_buffered_write_iter.vfs_write.ksys_write
5.84 ± 3% -4.7 1.17 ± 6% perf-profile.calltrace.cycles-pp.block_write_end.ext4_da_do_write_end.generic_perform_write.ext4_buffered_write_iter.vfs_write
5.79 ± 3% -4.6 1.16 ± 6% perf-profile.calltrace.cycles-pp.__block_commit_write.block_write_end.ext4_da_do_write_end.generic_perform_write.ext4_buffered_write_iter
9.66 ± 5% -4.0 5.62 ± 2% perf-profile.calltrace.cycles-pp.ext4_da_write_begin.generic_perform_write.ext4_buffered_write_iter.vfs_write.ksys_write
17.24 ± 5% -3.7 13.49 perf-profile.calltrace.cycles-pp.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback.wb_do_writeback
17.24 ± 5% -3.7 13.49 perf-profile.calltrace.cycles-pp.do_writepages.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback
17.24 ± 5% -3.7 13.50 perf-profile.calltrace.cycles-pp.__writeback_inodes_wb.wb_writeback.wb_do_writeback.wb_workfn.process_one_work
17.24 ± 5% -3.7 13.50 perf-profile.calltrace.cycles-pp.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback.wb_do_writeback.wb_workfn
17.24 ± 5% -3.7 13.49 perf-profile.calltrace.cycles-pp.ext4_writepages.do_writepages.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb
4.92 ± 6% -3.1 1.87 ± 2% perf-profile.calltrace.cycles-pp.__filemap_get_folio.ext4_da_write_begin.generic_perform_write.ext4_buffered_write_iter.vfs_write
2.60 ± 5% -1.7 0.94 ± 4% perf-profile.calltrace.cycles-pp.filemap_add_folio.__filemap_get_folio.ext4_da_write_begin.generic_perform_write.ext4_buffered_write_iter
1.78 ± 8% -1.1 0.68 ± 7% perf-profile.calltrace.cycles-pp.alloc_pages_mpol.folio_alloc_noprof.__filemap_get_folio.ext4_da_write_begin.generic_perform_write
1.56 ± 8% -1.1 0.48 ± 44% perf-profile.calltrace.cycles-pp.mpage_submit_folio.mpage_map_and_submit_buffers.mpage_map_and_submit_extent.ext4_do_writepages.ext4_writepages
1.86 ± 7% -1.0 0.82 ± 6% perf-profile.calltrace.cycles-pp.folio_alloc_noprof.__filemap_get_folio.ext4_da_write_begin.generic_perform_write.ext4_buffered_write_iter
1.65 ± 7% -1.0 0.64 ± 7% perf-profile.calltrace.cycles-pp.__alloc_frozen_pages_noprof.alloc_pages_mpol.folio_alloc_noprof.__filemap_get_folio.ext4_da_write_begin
4.54 ± 5% -0.9 3.67 ± 3% perf-profile.calltrace.cycles-pp.ext4_block_write_begin.ext4_da_write_begin.generic_perform_write.ext4_buffered_write_iter.vfs_write
1.93 ± 6% -0.8 1.08 ± 32% perf-profile.calltrace.cycles-pp.ext4_finish_bio.ext4_release_io_end.ext4_end_io_end.ext4_do_writepages.ext4_writepages
1.93 ± 6% -0.8 1.09 ± 31% perf-profile.calltrace.cycles-pp.ext4_release_io_end.ext4_end_io_end.ext4_do_writepages.ext4_writepages.do_writepages
1.42 ± 7% -0.8 0.58 ± 9% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.folio_alloc_noprof.__filemap_get_folio
1.96 ± 6% -0.8 1.20 ± 26% perf-profile.calltrace.cycles-pp.ext4_end_io_end.ext4_do_writepages.ext4_writepages.do_writepages.__writeback_single_inode
1.31 ± 3% -0.7 0.58 ± 6% perf-profile.calltrace.cycles-pp.mark_buffer_dirty.__block_commit_write.block_write_end.ext4_da_do_write_end.generic_perform_write
2.04 ± 9% -0.7 1.35 ± 7% perf-profile.calltrace.cycles-pp.mpage_map_and_submit_buffers.mpage_map_and_submit_extent.ext4_do_writepages.ext4_writepages.do_writepages
2.11 ± 9% -0.6 1.46 ± 7% perf-profile.calltrace.cycles-pp.mpage_map_and_submit_extent.ext4_do_writepages.ext4_writepages.do_writepages.__writeback_single_inode
1.84 ± 7% -0.5 1.30 ± 7% perf-profile.calltrace.cycles-pp.create_empty_buffers.ext4_block_write_begin.ext4_da_write_begin.generic_perform_write.ext4_buffered_write_iter
1.38 ± 8% -0.2 1.18 ± 7% perf-profile.calltrace.cycles-pp.folio_alloc_buffers.create_empty_buffers.ext4_block_write_begin.ext4_da_write_begin.generic_perform_write
0.62 ± 2% -0.1 0.56 ± 5% perf-profile.calltrace.cycles-pp.ext4_es_lookup_extent.ext4_da_map_blocks.ext4_da_get_block_prep.ext4_block_write_begin.ext4_da_write_begin
0.40 ± 70% +0.3 0.67 ± 5% perf-profile.calltrace.cycles-pp.io_serial_out.serial8250_console_write.console_flush_all.console_unlock.vprintk_emit
1.34 ± 9% +0.6 1.96 ± 4% perf-profile.calltrace.cycles-pp.clear_page_erms.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.alloc_pages_noprof
0.34 ±103% +0.8 1.13 ± 25% perf-profile.calltrace.cycles-pp.get_jiffies_update.tmigr_requires_handle_remote.update_process_times.tick_nohz_handler.__hrtimer_run_queues
1.84 ± 12% +0.8 2.62 ± 10% perf-profile.calltrace.cycles-pp.update_process_times.tick_nohz_handler.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt
0.35 ±103% +0.8 1.15 ± 24% perf-profile.calltrace.cycles-pp.tmigr_requires_handle_remote.update_process_times.tick_nohz_handler.__hrtimer_run_queues.hrtimer_interrupt
4.14 ± 8% +0.9 5.02 ± 9% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter
4.11 ± 8% +0.9 5.00 ± 9% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state
1.95 ± 6% +0.9 2.89 ± 3% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_frozen_pages_noprof.alloc_pages_mpol.alloc_pages_noprof.brd_insert_page
2.35 ± 10% +1.0 3.32 ± 12% perf-profile.calltrace.cycles-pp.tick_nohz_handler.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt
3.21 ± 9% +1.0 4.21 ± 10% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
2.10 ± 6% +1.0 3.12 ± 2% perf-profile.calltrace.cycles-pp.__alloc_frozen_pages_noprof.alloc_pages_mpol.alloc_pages_noprof.brd_insert_page.brd_submit_bio
2.21 ± 5% +1.1 3.30 ± 3% perf-profile.calltrace.cycles-pp.alloc_pages_mpol.alloc_pages_noprof.brd_insert_page.brd_submit_bio.__submit_bio
2.26 ± 5% +1.1 3.37 ± 3% perf-profile.calltrace.cycles-pp.alloc_pages_noprof.brd_insert_page.brd_submit_bio.__submit_bio.__submit_bio_noacct
3.70 ± 30% +1.2 4.90 ± 4% perf-profile.calltrace.cycles-pp.wait_for_lsr.serial8250_console_write.console_flush_all.console_unlock.vprintk_emit
4.40 ± 29% +1.4 5.82 ± 4% perf-profile.calltrace.cycles-pp.serial8250_console_write.console_flush_all.console_unlock.vprintk_emit.devkmsg_emit
4.96 ± 32% +1.4 6.41 perf-profile.calltrace.cycles-pp.memcpy_toio.drm_fb_memcpy.ast_primary_plane_helper_atomic_update.drm_atomic_helper_commit_planes.drm_atomic_helper_commit_tail
4.68 ± 30% +1.5 6.17 ± 4% perf-profile.calltrace.cycles-pp.devkmsg_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
4.68 ± 30% +1.5 6.17 ± 4% perf-profile.calltrace.cycles-pp.devkmsg_emit.devkmsg_write.vfs_write.ksys_write.do_syscall_64
4.68 ± 30% +1.5 6.17 ± 4% perf-profile.calltrace.cycles-pp.vprintk_emit.devkmsg_emit.devkmsg_write.vfs_write.ksys_write
4.68 ± 30% +1.5 6.17 ± 4% perf-profile.calltrace.cycles-pp.console_unlock.vprintk_emit.devkmsg_emit.devkmsg_write.vfs_write
4.68 ± 30% +1.5 6.17 ± 4% perf-profile.calltrace.cycles-pp.console_flush_all.console_unlock.vprintk_emit.devkmsg_emit.devkmsg_write
5.04 ± 32% +1.5 6.54 perf-profile.calltrace.cycles-pp.drm_fb_memcpy.ast_primary_plane_helper_atomic_update.drm_atomic_helper_commit_planes.drm_atomic_helper_commit_tail.ast_mode_config_helper_atomic_commit_tail
5.06 ± 32% +1.5 6.59 perf-profile.calltrace.cycles-pp.ast_primary_plane_helper_atomic_update.drm_atomic_helper_commit_planes.drm_atomic_helper_commit_tail.ast_mode_config_helper_atomic_commit_tail.commit_tail
5.07 ± 32% +1.5 6.60 perf-profile.calltrace.cycles-pp.drm_atomic_commit.drm_atomic_helper_dirtyfb.drm_fbdev_shmem_helper_fb_dirty.drm_fb_helper_damage_work.process_one_work
5.07 ± 32% +1.5 6.59 perf-profile.calltrace.cycles-pp.drm_atomic_helper_commit_planes.drm_atomic_helper_commit_tail.ast_mode_config_helper_atomic_commit_tail.commit_tail.drm_atomic_helper_commit
5.07 ± 32% +1.5 6.60 perf-profile.calltrace.cycles-pp.drm_atomic_helper_commit_tail.ast_mode_config_helper_atomic_commit_tail.commit_tail.drm_atomic_helper_commit.drm_atomic_commit
5.07 ± 32% +1.5 6.60 perf-profile.calltrace.cycles-pp.ast_mode_config_helper_atomic_commit_tail.commit_tail.drm_atomic_helper_commit.drm_atomic_commit.drm_atomic_helper_dirtyfb
5.07 ± 32% +1.5 6.60 perf-profile.calltrace.cycles-pp.commit_tail.drm_atomic_helper_commit.drm_atomic_commit.drm_atomic_helper_dirtyfb.drm_fbdev_shmem_helper_fb_dirty
5.07 ± 32% +1.5 6.60 perf-profile.calltrace.cycles-pp.drm_atomic_helper_commit.drm_atomic_commit.drm_atomic_helper_dirtyfb.drm_fbdev_shmem_helper_fb_dirty.drm_fb_helper_damage_work
5.07 ± 32% +1.5 6.60 perf-profile.calltrace.cycles-pp.drm_atomic_helper_dirtyfb.drm_fbdev_shmem_helper_fb_dirty.drm_fb_helper_damage_work.process_one_work.worker_thread
5.07 ± 32% +1.5 6.60 perf-profile.calltrace.cycles-pp.drm_fb_helper_damage_work.process_one_work.worker_thread.kthread.ret_from_fork
5.07 ± 32% +1.5 6.60 perf-profile.calltrace.cycles-pp.drm_fbdev_shmem_helper_fb_dirty.drm_fb_helper_damage_work.process_one_work.worker_thread.kthread
7.23 ± 9% +1.9 9.10 ± 2% perf-profile.calltrace.cycles-pp.rep_movs_alternative.copy_page_from_iter_atomic.generic_perform_write.ext4_buffered_write_iter.vfs_write
7.48 ± 9% +1.9 9.39 ± 2% perf-profile.calltrace.cycles-pp.copy_page_from_iter_atomic.generic_perform_write.ext4_buffered_write_iter.vfs_write.ksys_write
3.78 ± 7% +2.2 5.96 ± 7% perf-profile.calltrace.cycles-pp.memcpy_orig.copy_to_brd.brd_submit_bio.__submit_bio.__submit_bio_noacct
4.02 ± 7% +2.3 6.28 ± 6% perf-profile.calltrace.cycles-pp.copy_to_brd.brd_submit_bio.__submit_bio.__submit_bio_noacct.ext4_io_submit
5.63 ± 8% +3.2 8.81 ± 4% perf-profile.calltrace.cycles-pp._raw_spin_lock.brd_insert_page.brd_submit_bio.__submit_bio.__submit_bio_noacct
8.48 ± 7% +4.4 12.91 ± 3% perf-profile.calltrace.cycles-pp.brd_insert_page.brd_submit_bio.__submit_bio.__submit_bio_noacct.ext4_io_submit
17.80 ± 4% +5.1 22.94 perf-profile.calltrace.cycles-pp.wb_do_writeback.wb_workfn.process_one_work.worker_thread.kthread
17.80 ± 4% +5.1 22.94 perf-profile.calltrace.cycles-pp.wb_workfn.process_one_work.worker_thread.kthread.ret_from_fork
17.80 ± 4% +5.1 22.94 perf-profile.calltrace.cycles-pp.wb_writeback.wb_do_writeback.wb_workfn.process_one_work.worker_thread
17.72 ± 4% +5.2 22.93 perf-profile.calltrace.cycles-pp.ext4_do_writepages.ext4_writepages.do_writepages.__writeback_single_inode.writeback_sb_inodes
12.77 ± 5% +6.6 19.36 perf-profile.calltrace.cycles-pp.brd_submit_bio.__submit_bio.__submit_bio_noacct.ext4_io_submit.ext4_do_writepages
12.77 ± 5% +6.6 19.37 perf-profile.calltrace.cycles-pp.__submit_bio.__submit_bio_noacct.ext4_io_submit.ext4_do_writepages.ext4_writepages
12.77 ± 5% +6.6 19.37 perf-profile.calltrace.cycles-pp.__submit_bio_noacct.ext4_io_submit.ext4_do_writepages.ext4_writepages.do_writepages
12.77 ± 5% +6.6 19.37 perf-profile.calltrace.cycles-pp.ext4_io_submit.ext4_do_writepages.ext4_writepages.do_writepages.__writeback_single_inode
23.05 ± 4% +6.7 29.71 perf-profile.calltrace.cycles-pp.kthread.ret_from_fork.ret_from_fork_asm
22.96 ± 4% +6.7 29.61 perf-profile.calltrace.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
23.05 ± 4% +6.7 29.71 perf-profile.calltrace.cycles-pp.ret_from_fork.ret_from_fork_asm
23.05 ± 4% +6.7 29.71 perf-profile.calltrace.cycles-pp.ret_from_fork_asm
22.98 ± 4% +6.7 29.64 perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
0.48 ±110% +9.0 9.44 ± 2% perf-profile.calltrace.cycles-pp.ext4_writepages.do_writepages.__writeback_single_inode.writeback_sb_inodes.wb_writeback
0.48 ±110% +9.0 9.44 ± 2% perf-profile.calltrace.cycles-pp.__writeback_single_inode.writeback_sb_inodes.wb_writeback.wb_do_writeback.wb_workfn
0.48 ±110% +9.0 9.44 ± 2% perf-profile.calltrace.cycles-pp.do_writepages.__writeback_single_inode.writeback_sb_inodes.wb_writeback.wb_do_writeback
0.48 ±110% +9.0 9.44 ± 2% perf-profile.calltrace.cycles-pp.writeback_sb_inodes.wb_writeback.wb_do_writeback.wb_workfn.process_one_work
24.59 ± 5% -7.7 16.86 perf-profile.children.cycles-pp.ext4_buffered_write_iter
24.41 ± 5% -7.7 16.69 perf-profile.children.cycles-pp.generic_perform_write
31.13 -6.6 24.56 ± 2% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
31.10 -6.6 24.53 ± 2% perf-profile.children.cycles-pp.do_syscall_64
30.67 -6.4 24.32 perf-profile.children.cycles-pp.write
29.40 -6.3 23.14 perf-profile.children.cycles-pp.vfs_write
29.51 -6.3 23.26 perf-profile.children.cycles-pp.ksys_write
6.32 ± 3% -5.1 1.24 ± 6% perf-profile.children.cycles-pp.ext4_da_do_write_end
5.86 ± 3% -4.7 1.17 ± 6% perf-profile.children.cycles-pp.block_write_end
5.80 ± 3% -4.6 1.16 ± 6% perf-profile.children.cycles-pp.__block_commit_write
9.67 ± 5% -4.0 5.62 ± 2% perf-profile.children.cycles-pp.ext4_da_write_begin
17.24 ± 5% -3.7 13.50 perf-profile.children.cycles-pp.__writeback_inodes_wb
4.94 ± 6% -3.1 1.88 ± 2% perf-profile.children.cycles-pp.__filemap_get_folio
2.62 ± 5% -1.7 0.95 ± 4% perf-profile.children.cycles-pp.filemap_add_folio
1.86 ± 7% -1.0 0.82 ± 6% perf-profile.children.cycles-pp.folio_alloc_noprof
4.54 ± 5% -0.9 3.68 ± 3% perf-profile.children.cycles-pp.ext4_block_write_begin
2.11 ± 8% -0.8 1.35 ± 7% perf-profile.children.cycles-pp.mpage_map_and_submit_buffers
1.15 ± 6% -0.7 0.41 ± 11% perf-profile.children.cycles-pp.__folio_batch_add_and_move
1.31 ± 3% -0.7 0.58 ± 6% perf-profile.children.cycles-pp.mark_buffer_dirty
1.34 ± 7% -0.7 0.61 ± 9% perf-profile.children.cycles-pp.folio_end_writeback
2.17 ± 8% -0.7 1.46 ± 7% perf-profile.children.cycles-pp.mpage_map_and_submit_extent
1.02 ± 3% -0.7 0.33 ± 10% perf-profile.children.cycles-pp.__folio_mark_dirty
2.00 ± 5% -0.7 1.32 ± 10% perf-profile.children.cycles-pp.ext4_finish_bio
2.00 ± 5% -0.7 1.32 ± 10% perf-profile.children.cycles-pp.ext4_release_io_end
2.03 ± 6% -0.7 1.36 ± 9% perf-profile.children.cycles-pp.ext4_end_io_end
1.61 ± 7% -0.7 0.94 ± 8% perf-profile.children.cycles-pp.mpage_submit_folio
1.04 ± 5% -0.6 0.39 ± 11% perf-profile.children.cycles-pp.folio_batch_move_lru
1.07 ± 8% -0.6 0.44 ± 6% perf-profile.children.cycles-pp.__filemap_add_folio
0.80 ± 5% -0.6 0.21 ± 7% perf-profile.children.cycles-pp.lru_add
1.11 ± 6% -0.6 0.52 ± 9% perf-profile.children.cycles-pp.__folio_end_writeback
1.84 ± 7% -0.5 1.30 ± 7% perf-profile.children.cycles-pp.create_empty_buffers
0.99 ± 5% -0.5 0.45 ± 5% perf-profile.children.cycles-pp.__lruvec_stat_mod_folio
0.68 ± 8% -0.4 0.27 ± 11% perf-profile.children.cycles-pp.__folio_start_writeback
0.66 ± 7% -0.4 0.27 ± 8% perf-profile.children.cycles-pp.__mod_memcg_lruvec_state
0.53 ± 7% -0.4 0.14 ± 11% perf-profile.children.cycles-pp.lru_gen_add_folio
1.50 ± 7% -0.4 1.14 ± 7% perf-profile.children.cycles-pp.rmqueue
1.09 ± 7% -0.3 0.75 ± 9% perf-profile.children.cycles-pp.ext4_bio_write_folio
0.56 ± 5% -0.3 0.23 ± 11% perf-profile.children.cycles-pp.folio_account_dirtied
0.48 ± 7% -0.3 0.18 ± 7% perf-profile.children.cycles-pp.folio_clear_dirty_for_io
1.12 ± 6% -0.3 0.82 ± 9% perf-profile.children.cycles-pp.__rmqueue_pcplist
0.36 ± 10% -0.3 0.09 ± 4% perf-profile.children.cycles-pp.fault_in_iov_iter_readable
0.33 ± 10% -0.2 0.08 ± 8% perf-profile.children.cycles-pp.fault_in_readable
0.33 ± 6% -0.2 0.09 ± 14% perf-profile.children.cycles-pp.__mem_cgroup_charge
0.28 ± 8% -0.2 0.07 ± 17% perf-profile.children.cycles-pp.filemap_get_entry
0.27 ± 5% -0.2 0.06 ± 19% perf-profile.children.cycles-pp.__xa_set_mark
1.40 ± 8% -0.2 1.19 ± 7% perf-profile.children.cycles-pp.folio_alloc_buffers
0.28 ± 9% -0.2 0.08 ± 8% perf-profile.children.cycles-pp.node_dirty_ok
0.47 ± 10% -0.2 0.28 ± 13% perf-profile.children.cycles-pp.percpu_counter_add_batch
1.00 ± 8% -0.2 0.83 ± 3% perf-profile.children.cycles-pp.xas_load
0.21 ± 11% -0.1 0.08 perf-profile.children.cycles-pp.__mod_node_page_state
0.76 ± 8% -0.1 0.64 ± 8% perf-profile.children.cycles-pp.rmqueue_bulk
0.20 ± 9% -0.1 0.09 ± 18% perf-profile.children.cycles-pp._raw_spin_lock_irq
0.16 ± 11% -0.1 0.06 ± 48% perf-profile.children.cycles-pp.__mark_inode_dirty
0.12 ± 16% -0.1 0.02 ± 99% perf-profile.children.cycles-pp.xas_find_conflict
0.25 ± 11% -0.1 0.16 ± 10% perf-profile.children.cycles-pp.balance_dirty_pages_ratelimited_flags
0.12 ± 17% -0.1 0.02 ± 99% perf-profile.children.cycles-pp.mod_zone_page_state
0.14 ± 9% -0.1 0.06 ± 15% perf-profile.children.cycles-pp.charge_memcg
0.15 ± 9% -0.1 0.06 ± 11% perf-profile.children.cycles-pp.cgroup_rstat_updated
0.16 ± 12% -0.1 0.08 ± 12% perf-profile.children.cycles-pp.ext4_da_write_end
0.22 ± 13% -0.1 0.14 ± 10% perf-profile.children.cycles-pp.xas_start
0.35 ± 10% -0.1 0.28 ± 8% perf-profile.children.cycles-pp.allocate_slab
0.12 ± 10% -0.1 0.05 ± 47% perf-profile.children.cycles-pp.try_charge_memcg
0.12 ± 11% -0.1 0.05 ± 7% perf-profile.children.cycles-pp.__mod_zone_page_state
0.12 ± 18% -0.1 0.06 ± 18% perf-profile.children.cycles-pp.__fprop_add_percpu
0.57 ± 9% -0.1 0.51 ± 6% perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook
0.63 ± 2% -0.1 0.58 ± 4% perf-profile.children.cycles-pp.ext4_es_lookup_extent
0.12 ± 15% -0.1 0.07 ± 16% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
0.08 ± 20% -0.1 0.03 ±100% perf-profile.children.cycles-pp.xas_find_marked
0.20 ± 12% -0.0 0.16 ± 9% perf-profile.children.cycles-pp.__cond_resched
0.12 ± 10% -0.0 0.08 ± 11% perf-profile.children.cycles-pp.policy_nodemask
0.14 ± 5% -0.0 0.11 ± 8% perf-profile.children.cycles-pp.up_write
0.08 ± 8% -0.0 0.06 ± 15% perf-profile.children.cycles-pp.rcu_all_qs
0.10 ± 13% +0.0 0.12 ± 6% perf-profile.children.cycles-pp.vfs_read
0.10 ± 15% +0.0 0.13 ± 8% perf-profile.children.cycles-pp.ksys_read
0.07 ± 15% +0.0 0.11 ± 24% perf-profile.children.cycles-pp.ext4_ext_map_blocks
0.07 ± 14% +0.1 0.12 ± 18% perf-profile.children.cycles-pp.ext4_map_create_blocks
0.08 ± 8% +0.1 0.14 ± 19% perf-profile.children.cycles-pp.ext4_map_blocks
0.01 ±223% +0.1 0.07 ± 33% perf-profile.children.cycles-pp.ext4_mb_new_blocks
0.30 ± 10% +0.1 0.43 ± 8% perf-profile.children.cycles-pp.__xa_insert
0.37 ± 12% +0.1 0.51 ± 9% perf-profile.children.cycles-pp.xa_load
0.52 ± 29% +0.2 0.68 ± 5% perf-profile.children.cycles-pp.io_serial_out
1.40 ± 10% +0.6 1.98 ± 4% perf-profile.children.cycles-pp.clear_page_erms
0.56 ± 31% +0.6 1.17 ± 24% perf-profile.children.cycles-pp.tmigr_requires_handle_remote
0.54 ± 34% +0.6 1.15 ± 24% perf-profile.children.cycles-pp.get_jiffies_update
1.98 ± 12% +0.8 2.80 ± 10% perf-profile.children.cycles-pp.update_process_times
4.39 ± 8% +0.9 5.31 ± 9% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
4.36 ± 8% +0.9 5.29 ± 9% perf-profile.children.cycles-pp.hrtimer_interrupt
2.53 ± 10% +1.0 3.53 ± 12% perf-profile.children.cycles-pp.tick_nohz_handler
3.44 ± 8% +1.0 4.47 ± 10% perf-profile.children.cycles-pp.__hrtimer_run_queues
2.35 ± 5% +1.0 3.39 ± 3% perf-profile.children.cycles-pp.alloc_pages_noprof
4.03 ± 29% +1.3 5.28 ± 5% perf-profile.children.cycles-pp.wait_for_lsr
4.55 ± 29% +1.4 5.97 ± 5% perf-profile.children.cycles-pp.serial8250_console_write
4.84 ± 29% +1.5 6.32 ± 4% perf-profile.children.cycles-pp.console_flush_all
4.84 ± 29% +1.5 6.32 ± 4% perf-profile.children.cycles-pp.console_unlock
4.85 ± 29% +1.5 6.32 ± 4% perf-profile.children.cycles-pp.vprintk_emit
4.68 ± 30% +1.5 6.17 ± 4% perf-profile.children.cycles-pp.devkmsg_write
4.68 ± 30% +1.5 6.17 ± 4% perf-profile.children.cycles-pp.devkmsg_emit
5.02 ± 32% +1.5 6.52 perf-profile.children.cycles-pp.memcpy_toio
5.06 ± 32% +1.5 6.59 perf-profile.children.cycles-pp.drm_fb_memcpy
5.06 ± 32% +1.5 6.59 perf-profile.children.cycles-pp.ast_primary_plane_helper_atomic_update
5.07 ± 32% +1.5 6.60 perf-profile.children.cycles-pp.drm_atomic_commit
5.07 ± 32% +1.5 6.59 perf-profile.children.cycles-pp.drm_atomic_helper_commit_planes
5.07 ± 32% +1.5 6.60 perf-profile.children.cycles-pp.drm_atomic_helper_commit_tail
5.07 ± 32% +1.5 6.60 perf-profile.children.cycles-pp.ast_mode_config_helper_atomic_commit_tail
5.07 ± 32% +1.5 6.60 perf-profile.children.cycles-pp.commit_tail
5.07 ± 32% +1.5 6.60 perf-profile.children.cycles-pp.drm_atomic_helper_commit
5.07 ± 32% +1.5 6.60 perf-profile.children.cycles-pp.drm_atomic_helper_dirtyfb
5.07 ± 32% +1.5 6.60 perf-profile.children.cycles-pp.drm_fb_helper_damage_work
5.07 ± 32% +1.5 6.60 perf-profile.children.cycles-pp.drm_fbdev_shmem_helper_fb_dirty
7.25 ± 9% +1.9 9.13 ± 2% perf-profile.children.cycles-pp.rep_movs_alternative
7.50 ± 9% +1.9 9.40 ± 2% perf-profile.children.cycles-pp.copy_page_from_iter_atomic
3.96 ± 7% +2.0 6.00 ± 7% perf-profile.children.cycles-pp.memcpy_orig
4.18 ± 7% +2.1 6.30 ± 6% perf-profile.children.cycles-pp.copy_to_brd
6.53 ± 7% +2.8 9.36 ± 3% perf-profile.children.cycles-pp._raw_spin_lock
8.66 ± 6% +4.3 12.93 ± 3% perf-profile.children.cycles-pp.brd_insert_page
17.79 ± 4% +5.1 22.93 perf-profile.children.cycles-pp.__writeback_single_inode
17.79 ± 4% +5.1 22.93 perf-profile.children.cycles-pp.ext4_writepages
17.79 ± 4% +5.1 22.93 perf-profile.children.cycles-pp.do_writepages
17.79 ± 4% +5.1 22.93 perf-profile.children.cycles-pp.ext4_do_writepages
17.80 ± 4% +5.1 22.94 perf-profile.children.cycles-pp.writeback_sb_inodes
17.80 ± 4% +5.1 22.94 perf-profile.children.cycles-pp.wb_do_writeback
17.80 ± 4% +5.1 22.94 perf-profile.children.cycles-pp.wb_workfn
17.80 ± 4% +5.1 22.94 perf-profile.children.cycles-pp.wb_writeback
12.92 ± 4% +6.4 19.36 perf-profile.children.cycles-pp.brd_submit_bio
12.92 ± 4% +6.4 19.37 perf-profile.children.cycles-pp.__submit_bio
12.92 ± 4% +6.4 19.37 perf-profile.children.cycles-pp.__submit_bio_noacct
12.89 ± 4% +6.5 19.37 perf-profile.children.cycles-pp.ext4_io_submit
23.05 ± 4% +6.7 29.71 perf-profile.children.cycles-pp.kthread
22.96 ± 4% +6.7 29.61 perf-profile.children.cycles-pp.process_one_work
23.06 ± 4% +6.7 29.71 perf-profile.children.cycles-pp.ret_from_fork_asm
23.05 ± 4% +6.7 29.71 perf-profile.children.cycles-pp.ret_from_fork
22.98 ± 4% +6.7 29.64 perf-profile.children.cycles-pp.worker_thread
4.33 ± 4% -3.8 0.53 ± 8% perf-profile.self.cycles-pp.__block_commit_write
0.96 ± 6% -0.4 0.57 ± 8% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.52 ± 8% -0.3 0.21 ± 10% perf-profile.self.cycles-pp.__mod_memcg_lruvec_state
0.37 ± 6% -0.3 0.10 ± 8% perf-profile.self.cycles-pp.lru_gen_add_folio
0.34 ± 6% -0.3 0.07 ± 5% perf-profile.self.cycles-pp.__filemap_add_folio
0.32 ± 8% -0.3 0.06 ± 45% perf-profile.self.cycles-pp.ext4_da_do_write_end
0.33 ± 9% -0.2 0.08 ± 10% perf-profile.self.cycles-pp.fault_in_readable
0.33 ± 11% -0.2 0.12 ± 10% perf-profile.self.cycles-pp.__folio_end_writeback
0.26 ± 8% -0.2 0.07 ± 20% perf-profile.self.cycles-pp.lru_add
0.36 ± 8% -0.2 0.18 ± 16% perf-profile.self.cycles-pp.__rmqueue_pcplist
0.37 ± 10% -0.2 0.19 ± 18% perf-profile.self.cycles-pp.percpu_counter_add_batch
0.24 ± 7% -0.2 0.07 ± 14% perf-profile.self.cycles-pp.create_empty_buffers
0.69 ± 7% -0.2 0.53 ± 6% perf-profile.self.cycles-pp.rmqueue_bulk
0.24 ± 9% -0.2 0.08 ± 8% perf-profile.self.cycles-pp.__folio_start_writeback
0.27 ± 7% -0.1 0.12 ± 8% perf-profile.self.cycles-pp.ext4_block_write_begin
0.22 ± 9% -0.1 0.08 ± 12% perf-profile.self.cycles-pp.folio_clear_dirty_for_io
0.26 ± 9% -0.1 0.12 ± 13% perf-profile.self.cycles-pp.folios_put_refs
0.22 ± 12% -0.1 0.08 ± 8% perf-profile.self.cycles-pp.folio_end_writeback
0.29 ± 7% -0.1 0.15 ± 5% perf-profile.self.cycles-pp.__lruvec_stat_mod_folio
0.19 ± 11% -0.1 0.06 ± 9% perf-profile.self.cycles-pp.node_dirty_ok
0.16 ± 4% -0.1 0.05 ± 49% perf-profile.self.cycles-pp.ext4_da_write_begin
0.18 ± 11% -0.1 0.07 ± 5% perf-profile.self.cycles-pp.__mod_node_page_state
0.20 ± 7% -0.1 0.08 ± 17% perf-profile.self.cycles-pp._raw_spin_lock_irq
0.16 ± 13% -0.1 0.07 ± 12% perf-profile.self.cycles-pp.ext4_da_write_end
0.32 ± 12% -0.1 0.23 ± 15% perf-profile.self.cycles-pp.get_page_from_freelist
0.11 ± 8% -0.1 0.02 ± 99% perf-profile.self.cycles-pp.__mod_zone_page_state
0.14 ± 8% -0.1 0.06 ± 19% perf-profile.self.cycles-pp.mpage_prepare_extent_to_map
0.14 ± 9% -0.1 0.06 ± 11% perf-profile.self.cycles-pp.cgroup_rstat_updated
0.21 ± 13% -0.1 0.13 ± 10% perf-profile.self.cycles-pp.xas_start
0.14 ± 37% -0.1 0.06 ± 21% perf-profile.self.cycles-pp.folio_alloc_buffers
0.34 ± 9% -0.1 0.27 ± 11% perf-profile.self.cycles-pp.__alloc_frozen_pages_noprof
0.16 ± 19% -0.1 0.09 ± 12% perf-profile.self.cycles-pp.generic_perform_write
0.08 ± 20% -0.1 0.03 ±100% perf-profile.self.cycles-pp.xas_find_marked
0.11 ± 18% -0.0 0.06 ± 19% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
0.20 ± 11% -0.0 0.16 ± 6% perf-profile.self.cycles-pp._raw_spin_trylock
0.14 ± 7% -0.0 0.11 ± 8% perf-profile.self.cycles-pp.up_write
0.05 ± 48% +0.0 0.08 ± 21% perf-profile.self.cycles-pp.bvec_try_merge_page
0.04 ± 71% +0.0 0.08 ± 10% perf-profile.self.cycles-pp.alloc_pages_noprof
0.04 ± 71% +0.0 0.08 ± 22% perf-profile.self.cycles-pp.__xa_insert
0.03 ±101% +0.1 0.09 ± 17% perf-profile.self.cycles-pp.update_process_times
0.09 ± 17% +0.1 0.14 ± 13% perf-profile.self.cycles-pp.brd_submit_bio
0.20 ± 9% +0.1 0.27 ± 10% perf-profile.self.cycles-pp.ext4_bio_write_folio
0.00 +0.1 0.13 ± 8% perf-profile.self.cycles-pp.folio_alloc_noprof
0.52 ± 29% +0.2 0.68 ± 5% perf-profile.self.cycles-pp.io_serial_out
0.29 ± 36% +0.2 0.51 ± 26% perf-profile.self.cycles-pp.tick_nohz_handler
0.20 ± 8% +0.3 0.47 ± 14% perf-profile.self.cycles-pp.ext4_finish_bio
1.39 ± 10% +0.6 1.96 ± 3% perf-profile.self.cycles-pp.clear_page_erms
0.54 ± 34% +0.6 1.15 ± 24% perf-profile.self.cycles-pp.get_jiffies_update
4.90 ± 32% +1.4 6.34 perf-profile.self.cycles-pp.memcpy_toio
7.20 ± 9% +1.9 9.08 ± 2% perf-profile.self.cycles-pp.rep_movs_alternative
3.94 ± 7% +2.0 5.96 ± 6% perf-profile.self.cycles-pp.memcpy_orig
6.48 ± 7% +2.8 9.28 ± 3% perf-profile.self.cycles-pp._raw_spin_lock

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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