Hello,
kernel test robot noticed a 23.3% improvement of stress-ng.fsize.ops_per_sec on:
commit: 4b41deb896e3d0417701759194f0765c06258b9c ("ext4: remove unnecessary s_md_lock on update s_mb_last_group")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-12
test machine: 192 threads 2 sockets Intel(R) Xeon(R) Platinum 8468V CPU @ 2.4GHz (Sapphire Rapids) with 384G memory
parameters:
nr_threads: 100%
disk: 1SSD
testtime: 60s
fs: ext4
test: fsize
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250818/202508181007.a67b7a17-lkp@xxxxxxxxx
=========================================================================================
compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-12/performance/1SSD/ext4/x86_64-rhel-9.4/100%/debian-12-x86_64-20240206.cgz/igk-spr-2sp1/fsize/stress-ng/60s
commit:
f0374d8071 ("ext4: remove unnecessary s_mb_last_start")
4b41deb896 ("ext4: remove unnecessary s_md_lock on update s_mb_last_group")
f0374d80711adf86 4b41deb896e3d0417701759194f
---------------- ---------------------------
%stddev %change %stddev
\ | \
3.486e+08 ± 4% +20.0% 4.183e+08 ± 5% cpuidle..time
0.29 ± 32% +215.9% 0.90 ± 27% iostat.cpu.iowait
6783 +5.6% 7160 vmstat.system.cs
414835 +4.2% 432174 vmstat.system.in
0.29 ± 33% +0.6 0.93 ± 28% mpstat.cpu.all.iowait%
1.00 ± 5% -0.1 0.89 ± 4% mpstat.cpu.all.irq%
0.04 ± 2% +0.0 0.05 ± 3% mpstat.cpu.all.soft%
9298066 ± 4% +23.5% 11484309 ± 2% numa-numastat.node0.local_node
9407338 ± 4% +22.9% 11564393 ± 2% numa-numastat.node0.numa_hit
9564550 ± 3% +19.6% 11436032 ± 5% numa-numastat.node1.local_node
9653705 ± 3% +19.7% 11555011 ± 4% numa-numastat.node1.numa_hit
9362645 ± 3% +23.6% 11568925 ± 2% numa-vmstat.node0.numa_hit
9253372 ± 4% +24.2% 11488841 ± 2% numa-vmstat.node0.numa_local
9609252 ± 3% +20.3% 11556685 ± 4% numa-vmstat.node1.numa_hit
9520097 ± 3% +20.1% 11437766 ± 5% numa-vmstat.node1.numa_local
3564 ± 7% +12.7% 4018 ± 6% perf-c2c.DRAM.local
31639 ± 7% +17.7% 37225 ± 6% perf-c2c.DRAM.remote
38438 ± 8% +32.8% 51055 ± 5% perf-c2c.HITM.local
17530 ± 8% +28.1% 22465 ± 6% perf-c2c.HITM.remote
55969 ± 8% +31.4% 73520 ± 5% perf-c2c.HITM.total
66700 +6.4% 70950 proc-vmstat.nr_slab_reclaimable
19021176 ± 3% +21.6% 23136506 proc-vmstat.numa_hit
18822748 ± 3% +21.9% 22937443 proc-vmstat.numa_local
21083213 ± 3% +23.5% 26028768 proc-vmstat.pgalloc_normal
20599860 ± 4% +24.3% 25614743 proc-vmstat.pgfree
869734 ± 3% -31.1% 599551 ± 11% sched_debug.cpu.avg_idle.avg
181478 ± 14% -87.9% 21936 ± 23% sched_debug.cpu.avg_idle.min
926.00 ± 3% +10.2% 1020 ± 3% sched_debug.cpu.nr_switches.min
38.67 ± 25% -32.5% 26.08 ± 18% sched_debug.cpu.nr_uninterruptible.max
5.72 ± 15% -20.4% 4.56 ± 8% sched_debug.cpu.nr_uninterruptible.stddev
1600 ± 4% +23.1% 1970 stress-ng.fsize.SIGXFSZ_signals_per_sec
409112 ± 4% +23.3% 504442 stress-ng.fsize.ops
6819 ± 4% +23.3% 8408 stress-ng.fsize.ops_per_sec
15.18 ± 4% +47.3% 22.37 ± 2% stress-ng.time.user_time
4913 ± 3% +239.6% 16687 ± 9% stress-ng.time.voluntary_context_switches
1.35 ± 3% +6.1% 1.43 perf-stat.i.MPKI
1.508e+10 -8.2% 1.385e+10 ± 4% perf-stat.i.branch-instructions
0.37 +0.1 0.46 perf-stat.i.branch-miss-rate%
53745812 ± 2% +13.9% 61238496 ± 3% perf-stat.i.branch-misses
6655 ± 2% +6.1% 7059 perf-stat.i.context-switches
302.05 +11.2% 335.91 perf-stat.i.cpu-migrations
0.13 -5.5% 0.12 ± 3% perf-stat.i.ipc
1.34 ± 3% +6.4% 1.42 perf-stat.overall.MPKI
0.35 +0.1 0.44 perf-stat.overall.branch-miss-rate%
1.482e+10 -8.3% 1.359e+10 ± 4% perf-stat.ps.branch-instructions
52582897 ± 2% +13.7% 59787848 ± 2% perf-stat.ps.branch-misses
6516 ± 2% +6.0% 6904 perf-stat.ps.context-switches
295.57 +11.1% 328.32 ± 2% perf-stat.ps.cpu-migrations
4.006e+12 -5.9% 3.768e+12 ± 3% perf-stat.total.instructions
0.01 ±124% +1076.9% 0.15 ± 64% perf-sched.sch_delay.avg.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_dirty_inode.__mark_inode_dirty.generic_update_time
0.04 ± 77% +706.0% 0.31 ± 91% perf-sched.sch_delay.avg.ms.__cond_resched.do_ftruncate.do_sys_ftruncate.__x64_sys_ftruncate.do_syscall_64
3.04 ± 7% -42.0% 1.77 ± 71% perf-sched.sch_delay.avg.ms.__cond_resched.shmem_inode_acct_blocks.shmem_alloc_and_add_folio.shmem_get_folio_gfp.shmem_write_begin
0.16 ± 14% +68.2% 0.27 ± 15% perf-sched.sch_delay.avg.ms.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.00 ±103% +1355.2% 0.07 ± 53% perf-sched.sch_delay.avg.ms.io_schedule.bit_wait_io.__wait_on_bit_lock.out_of_line_wait_on_bit_lock
2.99 ± 28% -25.2% 2.24 ± 7% perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.ext4_mb_initialize_context
0.31 ±154% +340.7% 1.39 ± 50% perf-sched.sch_delay.avg.ms.schedule_timeout.khugepaged_wait_work.khugepaged.kthread
0.81 ±145% +164.4% 2.14 ± 66% perf-sched.sch_delay.max.ms.__cond_resched.__ext4_journal_get_write_access.ext4_mb_mark_context.ext4_mb_clear_bb.ext4_remove_blocks
0.02 ±138% +3796.0% 0.65 ±103% perf-sched.sch_delay.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_dirty_inode.__mark_inode_dirty.generic_update_time
0.66 ±163% +348.6% 2.97 ± 44% perf-sched.sch_delay.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_ext_truncate.ext4_truncate.ext4_setattr
1.59 ± 92% +121.2% 3.51 ± 12% perf-sched.sch_delay.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_truncate.ext4_setattr.notify_change
0.07 ± 71% +1499.3% 1.07 ±115% perf-sched.sch_delay.max.ms.__cond_resched.do_ftruncate.do_sys_ftruncate.__x64_sys_ftruncate.do_syscall_64
3.74 ± 6% +29.7% 4.85 ± 11% perf-sched.sch_delay.max.ms.__cond_resched.down_read.ext4_map_blocks.ext4_alloc_file_blocks.isra
3.16 ± 7% +35.0% 4.26 ± 5% perf-sched.sch_delay.max.ms.__cond_resched.down_read.unmap_mapping_range.truncate_pagecache.ext4_setattr
0.46 ±159% +331.6% 1.99 ± 53% perf-sched.sch_delay.max.ms.__cond_resched.ext4_free_blocks.ext4_remove_blocks.ext4_ext_rm_leaf.ext4_ext_remove_space
0.55 ±190% +351.1% 2.47 ± 66% perf-sched.sch_delay.max.ms.__cond_resched.kmem_cache_alloc_noprof.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf
0.24 ± 28% +63.9% 0.39 ± 24% perf-sched.sch_delay.max.ms.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
1.71 ± 21% +61.7% 2.76 ± 29% perf-sched.sch_delay.max.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.01 ±107% +6151.4% 0.36 ± 34% perf-sched.sch_delay.max.ms.io_schedule.bit_wait_io.__wait_on_bit_lock.out_of_line_wait_on_bit_lock
0.69 ±132% +561.4% 4.55 ± 24% perf-sched.sch_delay.max.ms.io_schedule.folio_wait_bit_common.__find_get_block_slow.find_get_block_common
0.31 ±154% +340.7% 1.39 ± 50% perf-sched.sch_delay.max.ms.schedule_timeout.khugepaged_wait_work.khugepaged.kthread
3570 ± 9% +27.7% 4557 ± 7% perf-sched.total_wait_and_delay.max.ms
3570 ± 9% +27.7% 4557 ± 7% perf-sched.total_wait_time.max.ms
0.95 ± 12% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.bdev_getblk.ext4_read_block_bitmap_nowait.ext4_read_block_bitmap.ext4_mb_mark_context
1226 ± 5% -79.6% 250.00 ± 19% perf-sched.wait_and_delay.count.__cond_resched.__ext4_handle_dirty_metadata.ext4_mb_mark_context.ext4_mb_mark_diskspace_used.ext4_mb_new_blocks
278.17 ± 18% +333.4% 1205 ± 20% perf-sched.wait_and_delay.count.__cond_resched.__ext4_mark_inode_dirty.ext4_dirty_inode.__mark_inode_dirty.ext4_setattr
1465 ± 3% -92.0% 117.67 ± 71% perf-sched.wait_and_delay.count.__cond_resched.__find_get_block_slow.find_get_block_common.bdev_getblk.ext4_read_block_bitmap_nowait
216.83 ± 5% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.bdev_getblk.ext4_read_block_bitmap_nowait.ext4_read_block_bitmap.ext4_mb_mark_context
25.17 ±223% +2141.1% 564.00 ± 23% perf-sched.wait_and_delay.count.__cond_resched.down_write.ext4_setattr.notify_change.do_truncate
271.33 ± 18% +315.5% 1127 ± 23% perf-sched.wait_and_delay.count.__cond_resched.down_write.ext4_truncate.ext4_setattr.notify_change
1778 ± 3% -77.4% 402.33 ± 10% perf-sched.wait_and_delay.count.__cond_resched.ext4_mb_regular_allocator.ext4_mb_new_blocks.ext4_ext_map_blocks.ext4_map_create_blocks
759.17 ± 22% +90.0% 1442 ± 17% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
20.19 ± 85% +838.0% 189.37 ± 85% perf-sched.wait_and_delay.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_dirty_inode.__mark_inode_dirty.ext4_setattr
18.44 ± 46% -71.0% 5.34 ± 70% perf-sched.wait_and_delay.max.ms.__cond_resched.__find_get_block_slow.find_get_block_common.bdev_getblk.ext4_read_block_bitmap_nowait
21.76 ± 64% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.bdev_getblk.ext4_read_block_bitmap_nowait.ext4_read_block_bitmap.ext4_mb_mark_context
7.06 ±223% +2468.4% 181.45 ± 93% perf-sched.wait_and_delay.max.ms.__cond_resched.down_write.ext4_setattr.notify_change.do_truncate
2676 ± 14% -72.6% 733.87 ±142% perf-sched.wait_and_delay.max.ms.devkmsg_read.vfs_read.ksys_read.do_syscall_64
0.04 ± 77% +745.3% 0.33 ± 95% perf-sched.wait_time.avg.ms.__cond_resched.do_ftruncate.do_sys_ftruncate.__x64_sys_ftruncate.do_syscall_64
0.48 ± 28% +245.9% 1.65 ± 79% perf-sched.wait_time.avg.ms.__cond_resched.down_read.ext4_map_blocks.ext4_alloc_file_blocks.isra
3.75 ± 47% -37.0% 2.36 ± 5% perf-sched.wait_time.avg.ms.schedule_preempt_disabled.__mutex_lock.constprop.0.ext4_mb_initialize_context
0.31 ±154% +351.8% 1.42 ± 44% perf-sched.wait_time.avg.ms.schedule_timeout.khugepaged_wait_work.khugepaged.kthread
1.19 ±104% +187.2% 3.43 ± 7% perf-sched.wait_time.max.ms.__cond_resched.__alloc_frozen_pages_noprof.alloc_pages_mpol.folio_alloc_noprof.__filemap_get_folio
0.81 ±145% +164.4% 2.14 ± 66% perf-sched.wait_time.max.ms.__cond_resched.__ext4_journal_get_write_access.ext4_mb_mark_context.ext4_mb_clear_bb.ext4_remove_blocks
18.34 ± 93% +932.7% 189.35 ± 85% perf-sched.wait_time.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_dirty_inode.__mark_inode_dirty.ext4_setattr
0.15 ±127% +384.4% 0.71 ± 89% perf-sched.wait_time.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_dirty_inode.__mark_inode_dirty.generic_update_time
0.66 ±163% +348.6% 2.97 ± 44% perf-sched.wait_time.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_ext_truncate.ext4_truncate.ext4_setattr
0.99 ±137% +179.9% 2.78 ± 42% perf-sched.wait_time.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_setattr.notify_change.do_truncate
1.59 ± 92% +121.2% 3.51 ± 12% perf-sched.wait_time.max.ms.__cond_resched.__ext4_mark_inode_dirty.ext4_truncate.ext4_setattr.notify_change
17.82 ± 52% -70.1% 5.33 ± 55% perf-sched.wait_time.max.ms.__cond_resched.__find_get_block_slow.find_get_block_common.bdev_getblk.ext4_read_block_bitmap_nowait
0.07 ± 71% +1499.3% 1.07 ±115% perf-sched.wait_time.max.ms.__cond_resched.do_ftruncate.do_sys_ftruncate.__x64_sys_ftruncate.do_syscall_64
7.20 ±107% +2430.6% 182.16 ± 79% perf-sched.wait_time.max.ms.__cond_resched.down_read.ext4_map_blocks.ext4_alloc_file_blocks.isra
3.16 ± 7% +2622.2% 85.90 ±141% perf-sched.wait_time.max.ms.__cond_resched.down_read.unmap_mapping_range.truncate_pagecache.ext4_setattr
3.78 ± 6% +4780.6% 184.48 ± 91% perf-sched.wait_time.max.ms.__cond_resched.down_write.ext4_map_blocks.ext4_alloc_file_blocks.isra
0.46 ±159% +331.6% 1.99 ± 53% perf-sched.wait_time.max.ms.__cond_resched.ext4_free_blocks.ext4_remove_blocks.ext4_ext_rm_leaf.ext4_ext_remove_space
4.47 ± 36% +2537.3% 117.99 ±123% perf-sched.wait_time.max.ms.__cond_resched.ext4_journal_check_start.__ext4_journal_start_sb.ext4_ext_remove_space.ext4_ext_truncate
0.55 ±190% +351.1% 2.47 ± 66% perf-sched.wait_time.max.ms.__cond_resched.kmem_cache_alloc_noprof.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf
2668 ± 14% -70.3% 793.19 ±127% perf-sched.wait_time.max.ms.devkmsg_read.vfs_read.ksys_read.do_syscall_64
4.94 ±169% +2462.5% 126.53 ±116% perf-sched.wait_time.max.ms.io_schedule.folio_wait_bit_common.__find_get_block_slow.find_get_block_common
0.31 ±154% +351.8% 1.42 ± 44% perf-sched.wait_time.max.ms.schedule_timeout.khugepaged_wait_work.khugepaged.kthread
29.76 ±100% -18.9 10.89 ±223% perf-profile.calltrace.cycles-pp.ext4_ext_remove_space.ext4_ext_truncate.ext4_truncate.ext4_setattr.notify_change
29.65 ±100% -18.8 10.84 ±223% perf-profile.calltrace.cycles-pp.ext4_ext_rm_leaf.ext4_ext_remove_space.ext4_ext_truncate.ext4_truncate.ext4_setattr
29.63 ±100% -18.8 10.82 ±223% perf-profile.calltrace.cycles-pp.ext4_remove_blocks.ext4_ext_rm_leaf.ext4_ext_remove_space.ext4_ext_truncate.ext4_truncate
29.62 ±100% -18.8 10.82 ±223% perf-profile.calltrace.cycles-pp.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf.ext4_ext_remove_space.ext4_ext_truncate
29.92 ±100% -18.8 11.15 ±223% perf-profile.calltrace.cycles-pp.ext4_ext_truncate.ext4_truncate.ext4_setattr.notify_change.do_truncate
30.90 ±100% -18.4 12.49 ±223% perf-profile.calltrace.cycles-pp.ext4_truncate.ext4_setattr.notify_change.do_truncate.do_ftruncate
32.51 ±100% -17.9 14.63 ±223% perf-profile.calltrace.cycles-pp.ftruncate64
32.50 ±100% -17.9 14.62 ±223% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.ftruncate64
32.50 ±100% -17.9 14.62 ±223% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.ftruncate64
32.48 ±100% -17.9 14.62 ±223% perf-profile.calltrace.cycles-pp.__x64_sys_ftruncate.do_syscall_64.entry_SYSCALL_64_after_hwframe.ftruncate64
32.48 ±100% -17.9 14.62 ±223% perf-profile.calltrace.cycles-pp.do_ftruncate.do_sys_ftruncate.__x64_sys_ftruncate.do_syscall_64.entry_SYSCALL_64_after_hwframe
32.48 ±100% -17.9 14.62 ±223% perf-profile.calltrace.cycles-pp.do_sys_ftruncate.__x64_sys_ftruncate.do_syscall_64.entry_SYSCALL_64_after_hwframe.ftruncate64
32.47 ±100% -17.9 14.60 ±223% perf-profile.calltrace.cycles-pp.notify_change.do_truncate.do_ftruncate.do_sys_ftruncate.__x64_sys_ftruncate
32.47 ±100% -17.9 14.61 ±223% perf-profile.calltrace.cycles-pp.do_truncate.do_ftruncate.do_sys_ftruncate.__x64_sys_ftruncate.do_syscall_64
32.46 ±100% -17.9 14.60 ±223% perf-profile.calltrace.cycles-pp.ext4_setattr.notify_change.do_truncate.do_ftruncate.do_sys_ftruncate
16.57 ±100% -15.6 0.99 ±223% perf-profile.calltrace.cycles-pp.ext4_map_create_blocks.ext4_map_blocks.ext4_alloc_file_blocks.ext4_do_fallocate.ext4_fallocate
16.54 ±100% -15.6 0.98 ±223% perf-profile.calltrace.cycles-pp.ext4_ext_map_blocks.ext4_map_create_blocks.ext4_map_blocks.ext4_alloc_file_blocks.ext4_do_fallocate
16.49 ±100% -15.5 0.96 ±223% perf-profile.calltrace.cycles-pp.ext4_mb_new_blocks.ext4_ext_map_blocks.ext4_map_create_blocks.ext4_map_blocks.ext4_alloc_file_blocks
16.71 ±100% -15.5 1.26 ±223% perf-profile.calltrace.cycles-pp.ext4_map_blocks.ext4_alloc_file_blocks.ext4_do_fallocate.ext4_fallocate.vfs_fallocate
17.33 ±100% -15.4 1.96 ±223% perf-profile.calltrace.cycles-pp.fallocate64
17.31 ±100% -15.4 1.95 ±223% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.fallocate64
17.31 ±100% -15.4 1.95 ±223% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.fallocate64
17.21 ±100% -15.3 1.86 ±223% perf-profile.calltrace.cycles-pp.ext4_do_fallocate.ext4_fallocate.vfs_fallocate.__x64_sys_fallocate.do_syscall_64
17.18 ±100% -15.3 1.85 ±223% perf-profile.calltrace.cycles-pp.ext4_alloc_file_blocks.ext4_do_fallocate.ext4_fallocate.vfs_fallocate.__x64_sys_fallocate
17.23 ±100% -15.3 1.91 ±223% perf-profile.calltrace.cycles-pp.__x64_sys_fallocate.do_syscall_64.entry_SYSCALL_64_after_hwframe.fallocate64
17.23 ±100% -15.3 1.91 ±223% perf-profile.calltrace.cycles-pp.vfs_fallocate.__x64_sys_fallocate.do_syscall_64.entry_SYSCALL_64_after_hwframe.fallocate64
17.23 ±100% -15.3 1.90 ±223% perf-profile.calltrace.cycles-pp.ext4_fallocate.vfs_fallocate.__x64_sys_fallocate.do_syscall_64.entry_SYSCALL_64_after_hwframe
16.94 ±100% -12.7 4.20 ±223% perf-profile.calltrace.cycles-pp.ext4_mb_free_metadata.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf.ext4_ext_remove_space
11.97 ±100% -11.4 0.58 ±223% perf-profile.calltrace.cycles-pp.ext4_mb_regular_allocator.ext4_mb_new_blocks.ext4_ext_map_blocks.ext4_map_create_blocks.ext4_map_blocks
9.83 ±100% -6.8 3.06 ±223% perf-profile.calltrace.cycles-pp.ext4_mb_mark_context.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf.ext4_ext_remove_space
9.69 ±100% -6.7 2.98 ±223% perf-profile.calltrace.cycles-pp._raw_spin_lock.ext4_mb_mark_context.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf
9.67 ±100% -6.7 2.98 ±223% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.ext4_mb_mark_context.ext4_mb_clear_bb.ext4_remove_blocks
8.41 ±100% -6.3 2.07 ±223% perf-profile.calltrace.cycles-pp._raw_spin_lock.ext4_mb_free_metadata.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf
8.42 ±100% -6.3 2.08 ±223% perf-profile.calltrace.cycles-pp.ext4_try_merge_freed_extent.ext4_mb_free_metadata.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf
8.40 ±100% -6.3 2.06 ±223% perf-profile.calltrace.cycles-pp._raw_spin_lock.ext4_try_merge_freed_extent.ext4_mb_free_metadata.ext4_mb_clear_bb.ext4_remove_blocks
8.39 ±100% -6.3 2.06 ±223% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.ext4_mb_free_metadata.ext4_mb_clear_bb.ext4_remove_blocks
8.36 ±100% -6.3 2.04 ±223% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.ext4_try_merge_freed_extent.ext4_mb_free_metadata.ext4_mb_clear_bb
5.35 ±100% -5.4 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock.ext4_mb_regular_allocator.ext4_mb_new_blocks.ext4_ext_map_blocks.ext4_map_create_blocks
5.33 ±100% -5.3 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.ext4_mb_regular_allocator.ext4_mb_new_blocks.ext4_ext_map_blocks
4.46 ±100% -4.1 0.34 ±223% perf-profile.calltrace.cycles-pp.ext4_mb_mark_diskspace_used.ext4_mb_new_blocks.ext4_ext_map_blocks.ext4_map_create_blocks.ext4_map_blocks
4.45 ±100% -4.1 0.34 ±223% perf-profile.calltrace.cycles-pp.ext4_mb_mark_context.ext4_mb_mark_diskspace_used.ext4_mb_new_blocks.ext4_ext_map_blocks.ext4_map_create_blocks
4.24 ±100% -4.0 0.24 ±223% perf-profile.calltrace.cycles-pp._raw_spin_lock.ext4_mb_mark_context.ext4_mb_mark_diskspace_used.ext4_mb_new_blocks.ext4_ext_map_blocks
4.23 ±100% -4.0 0.24 ±223% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.ext4_mb_mark_context.ext4_mb_mark_diskspace_used.ext4_mb_new_blocks
3.58 ±100% -3.4 0.13 ±223% perf-profile.calltrace.cycles-pp.ext4_mb_complex_scan_group.ext4_mb_regular_allocator.ext4_mb_new_blocks.ext4_ext_map_blocks.ext4_map_create_blocks
3.31 ±100% -3.3 0.00 perf-profile.calltrace.cycles-pp.ext4_mb_use_best_found.ext4_mb_complex_scan_group.ext4_mb_regular_allocator.ext4_mb_new_blocks.ext4_ext_map_blocks
3.28 ±100% -3.3 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock.ext4_mb_use_best_found.ext4_mb_complex_scan_group.ext4_mb_regular_allocator.ext4_mb_new_blocks
3.26 ±100% -3.3 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.ext4_mb_use_best_found.ext4_mb_complex_scan_group.ext4_mb_regular_allocator
2.66 ±100% +0.8 3.46 ±223% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf
2.67 ±100% +0.8 3.46 ±223% perf-profile.calltrace.cycles-pp._raw_spin_lock.ext4_mb_clear_bb.ext4_remove_blocks.ext4_ext_rm_leaf.ext4_ext_remove_space
49.87 ±100% -33.3 16.60 ±223% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
49.86 ±100% -33.3 16.60 ±223% perf-profile.children.cycles-pp.do_syscall_64
44.38 ±100% -33.1 11.32 ±223% perf-profile.children.cycles-pp._raw_spin_lock
44.30 ±100% -32.5 11.80 ±223% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
29.76 ±100% -18.9 10.89 ±223% perf-profile.children.cycles-pp.ext4_ext_remove_space
29.65 ±100% -18.8 10.84 ±223% perf-profile.children.cycles-pp.ext4_ext_rm_leaf
29.63 ±100% -18.8 10.82 ±223% perf-profile.children.cycles-pp.ext4_mb_clear_bb
29.63 ±100% -18.8 10.82 ±223% perf-profile.children.cycles-pp.ext4_remove_blocks
29.92 ±100% -18.8 11.16 ±223% perf-profile.children.cycles-pp.ext4_ext_truncate
30.90 ±100% -18.4 12.49 ±223% perf-profile.children.cycles-pp.ext4_truncate
32.52 ±100% -17.9 14.63 ±223% perf-profile.children.cycles-pp.ftruncate64
32.48 ±100% -17.9 14.62 ±223% perf-profile.children.cycles-pp.__x64_sys_ftruncate
32.48 ±100% -17.9 14.62 ±223% perf-profile.children.cycles-pp.do_sys_ftruncate
32.48 ±100% -17.9 14.62 ±223% perf-profile.children.cycles-pp.do_ftruncate
32.47 ±100% -17.9 14.60 ±223% perf-profile.children.cycles-pp.notify_change
32.47 ±100% -17.9 14.61 ±223% perf-profile.children.cycles-pp.do_truncate
32.46 ±100% -17.9 14.60 ±223% perf-profile.children.cycles-pp.ext4_setattr
16.57 ±100% -15.6 0.99 ±223% perf-profile.children.cycles-pp.ext4_map_create_blocks
16.49 ±100% -15.5 0.96 ±223% perf-profile.children.cycles-pp.ext4_mb_new_blocks
16.72 ±100% -15.5 1.26 ±223% perf-profile.children.cycles-pp.ext4_map_blocks
16.64 ±100% -15.4 1.22 ±223% perf-profile.children.cycles-pp.ext4_ext_map_blocks
17.33 ±100% -15.4 1.96 ±223% perf-profile.children.cycles-pp.fallocate64
17.21 ±100% -15.3 1.86 ±223% perf-profile.children.cycles-pp.ext4_do_fallocate
17.18 ±100% -15.3 1.85 ±223% perf-profile.children.cycles-pp.ext4_alloc_file_blocks
17.23 ±100% -15.3 1.91 ±223% perf-profile.children.cycles-pp.vfs_fallocate
17.23 ±100% -15.3 1.91 ±223% perf-profile.children.cycles-pp.__x64_sys_fallocate
17.23 ±100% -15.3 1.90 ±223% perf-profile.children.cycles-pp.ext4_fallocate
16.94 ±100% -12.7 4.20 ±223% perf-profile.children.cycles-pp.ext4_mb_free_metadata
11.97 ±100% -11.4 0.58 ±223% perf-profile.children.cycles-pp.ext4_mb_regular_allocator
14.28 ±100% -10.9 3.40 ±223% perf-profile.children.cycles-pp.ext4_mb_mark_context
8.42 ±100% -6.3 2.08 ±223% perf-profile.children.cycles-pp.ext4_try_merge_freed_extent
5.43 ±100% -5.4 0.03 ±223% perf-profile.children.cycles-pp.ext4_mb_use_best_found
4.46 ±100% -4.1 0.34 ±223% perf-profile.children.cycles-pp.ext4_mb_mark_diskspace_used
3.58 ±100% -3.5 0.13 ±223% perf-profile.children.cycles-pp.ext4_mb_complex_scan_group
43.79 ±100% -32.1 11.69 ±223% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
