Ping...
"Huang, Ying" <ying.hu...@intel.com> writes:
> Hi, Josef,
>
> Do you have time to take a look at the regression?
>
> kernel test robot <xiaolong...@intel.com> writes:
>
>> Greeting,
>>
>> FYI, we noticed a -12.3% regression of blogbench.write_score and a +9.6%
>> improvement
>> of blogbench.read_score due to commit:
>>
>>
>> commit: 9092c71bb724dba2ecba849eae69e5c9d39bd3d2 ("mm: use sc->priority for
>> slab shrink targets")
>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>>
>> in testcase: blogbench
>> on test machine: 16 threads Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz with 8G
>> memory
>> with following parameters:
>>
>> disk: 1SSD
>> fs: btrfs
>> cpufreq_governor: performance
>>
>> test-description: Blogbench is a portable filesystem benchmark that tries to
>> reproduce the load of a real-world busy file server.
>> test-url: https://www.pureftpd.org/project/blogbench
>>
>>
>>
>> Details are as below:
>> -------------------------------------------------------------------------------------------------->
>>
>>
>> To reproduce:
>>
>> git clone https://github.com/intel/lkp-tests.git
>> cd lkp-tests
>> bin/lkp install job.yaml # job file is attached in this email
>> bin/lkp run job.yaml
>>
>> =========================================================================================
>> compiler/cpufreq_governor/disk/fs/kconfig/rootfs/tbox_group/testcase:
>>
>> gcc-7/performance/1SSD/btrfs/x86_64-rhel-7.2/debian-x86_64-2016-08-31.cgz/lkp-bdw-de1/blogbench
>>
>> commit:
>> fcb2b0c577 ("mm: show total hugetlb memory consumption in /proc/meminfo")
>> 9092c71bb7 ("mm: use sc->priority for slab shrink targets")
>>
>> fcb2b0c577f145c7 9092c71bb724dba2ecba849eae
>> ---------------- --------------------------
>> %stddev %change %stddev
>> \ | \
>> 3256 -12.3% 2854 blogbench.write_score
>> 1235237 2% +9.6% 1354163 blogbench.read_score
>> 28050912 -10.1% 25212230
>> blogbench.time.file_system_outputs
>> 6481995 3% +25.0% 8105320 2%
>> blogbench.time.involuntary_context_switches
>> 906.00 +13.7% 1030
>> blogbench.time.percent_of_cpu_this_job_got
>> 2552 +14.0% 2908 blogbench.time.system_time
>> 173.80 +8.4% 188.32 blogbench.time.user_time
>> 19353936 +3.6% 20045728
>> blogbench.time.voluntary_context_switches
>> 8719514 +13.0% 9850451 softirqs.RCU
>> 2.97 5% -0.7 2.30 3% mpstat.cpu.idle%
>> 24.92 -6.5 18.46 mpstat.cpu.iowait%
>> 0.65 2% +0.1 0.75 mpstat.cpu.soft%
>> 67.76 +6.7 74.45 mpstat.cpu.sys%
>> 50206 -10.7% 44858 vmstat.io.bo
>> 49.25 -9.1% 44.75 2% vmstat.procs.b
>> 224125 -1.8% 220135 vmstat.system.cs
>> 48903 +10.7% 54134 vmstat.system.in
>> 3460654 +10.8% 3834883 meminfo.Active
>> 3380666 +11.0% 3752872 meminfo.Active(file)
>> 1853849 -17.4% 1530415 meminfo.Inactive
>> 1836507 -17.6% 1513054 meminfo.Inactive(file)
>> 551311 -10.3% 494265 meminfo.SReclaimable
>> 196525 -12.6% 171775 meminfo.SUnreclaim
>> 747837 -10.9% 666040 meminfo.Slab
>> 8.904e+08 -24.9% 6.683e+08 cpuidle.C1.time
>> 22971020 -12.8% 20035820 cpuidle.C1.usage
>> 2.518e+08 3% -31.7% 1.72e+08 cpuidle.C1E.time
>> 821393 2% -33.3% 548003 cpuidle.C1E.usage
>> 75460078 2% -23.3% 57903768 2% cpuidle.C3.time
>> 136506 3% -25.3% 101956 3% cpuidle.C3.usage
>> 56892498 4% -23.3% 43608427 4% cpuidle.C6.time
>> 85034 3% -33.9% 56184 3% cpuidle.C6.usage
>> 24373567 -24.5% 18395538 cpuidle.POLL.time
>> 449033 2% -10.8% 400493 cpuidle.POLL.usage
>> 1832 +9.3% 2002 turbostat.Avg_MHz
>> 22967645 -12.8% 20032521 turbostat.C1
>> 18.43 -4.6 13.85 turbostat.C1%
>> 821328 2% -33.3% 547948 turbostat.C1E
>> 5.21 3% -1.6 3.56 turbostat.C1E%
>> 136377 3% -25.3% 101823 3% turbostat.C3
>> 1.56 2% -0.4 1.20 3% turbostat.C3%
>> 84404 3% -34.0% 55743 3% turbostat.C6
>> 1.17 4% -0.3 0.90 4% turbostat.C6%
>> 25.93 -26.2% 19.14 turbostat.CPU%c1
>> 0.12 3% -19.1% 0.10 9% turbostat.CPU%c3
>> 14813304 +10.7% 16398388 turbostat.IRQ
>> 38.19 +3.6% 39.56 turbostat.PkgWatt
>> 4.51 +4.5% 4.71 turbostat.RAMWatt
>> 8111200 13% -63.2% 2986242 48%
>> proc-vmstat.compact_daemon_free_scanned
>> 1026719 30% -81.2% 193485 30%
>> proc-vmstat.compact_daemon_migrate_scanned
>> 2444 21% -63.3% 897.50 20% proc-vmstat.compact_daemon_wake
>> 8111200 13% -63.2% 2986242 48% proc-vmstat.compact_free_scanned
>> 755491 32% -81.6% 138856 28% proc-vmstat.compact_isolated
>> 1026719 30% -81.2% 193485 30%
>> proc-vmstat.compact_migrate_scanned
>> 137.75 34% +2.8e+06% 3801062 2% proc-vmstat.kswapd_inodesteal
>> 6749 20% -53.6% 3131 12%
>> proc-vmstat.kswapd_low_wmark_hit_quickly
>> 844991 +11.2% 939487 proc-vmstat.nr_active_file
>> 3900576 -10.5% 3490567 proc-vmstat.nr_dirtied
>> 459789 -17.8% 377930 proc-vmstat.nr_inactive_file
>> 137947 -10.3% 123720 proc-vmstat.nr_slab_reclaimable
>> 49165 -12.6% 42989
>> proc-vmstat.nr_slab_unreclaimable
>> 1382 11% -26.2% 1020 20% proc-vmstat.nr_writeback
>> 3809266 -10.7% 3403350 proc-vmstat.nr_written
>> 844489 +11.2% 938974 proc-vmstat.nr_zone_active_file
>> 459855 -17.8% 378121
>> proc-vmstat.nr_zone_inactive_file
>> 7055 18% -52.0% 3389 11% proc-vmstat.pageoutrun
>> 33764911 2% +21.3% 40946445 proc-vmstat.pgactivate
>> 42044161 2% +12.1% 47139065 proc-vmstat.pgdeactivate
>> 92153 20% -69.1% 28514 24% proc-vmstat.pgmigrate_success
>> 15212270 -10.7% 13591573 proc-vmstat.pgpgout
>> 42053817 2% +12.1% 47151755 proc-vmstat.pgrefill
>> 11297 107% +1025.4% 127138 21% proc-vmstat.pgscan_direct
>> 19930162 -24.0% 15141439 proc-vmstat.pgscan_kswapd
>> 19423629 -24.0% 14758807 proc-vmstat.pgsteal_kswapd
>> 10868768 +184.8% 30950752 proc-vmstat.slabs_scanned
>
> The slab scan number increased a lot.
>
>> 3361780 3% -22.9% 2593327 3% proc-vmstat.workingset_activate
>> 4994722 2% -43.2% 2835020 2% proc-vmstat.workingset_refault
>> 316427 -9.3% 286844
>> slabinfo.Acpi-Namespace.active_objs
>> 3123 -9.4% 2829
>> slabinfo.Acpi-Namespace.active_slabs
>> 318605 -9.4% 288623
>> slabinfo.Acpi-Namespace.num_objs
>> 3123 -9.4% 2829
>> slabinfo.Acpi-Namespace.num_slabs
>> 220514 -40.7% 130747
>> slabinfo.btrfs_delayed_node.active_objs
>> 9751 -25.3% 7283
>> slabinfo.btrfs_delayed_node.active_slabs
>> 263293 -25.3% 196669
>> slabinfo.btrfs_delayed_node.num_objs
>> 9751 -25.3% 7283
>> slabinfo.btrfs_delayed_node.num_slabs
>> 6383 8% -12.0% 5615 2%
>> slabinfo.btrfs_delayed_ref_head.num_objs
>> 9496 +15.5% 10969
>> slabinfo.btrfs_extent_buffer.active_objs
>> 9980 +20.5% 12022
>> slabinfo.btrfs_extent_buffer.num_objs
>> 260933 -10.7% 233136
>> slabinfo.btrfs_extent_map.active_objs
>> 9392 -10.6% 8396
>> slabinfo.btrfs_extent_map.active_slabs
>> 263009 -10.6% 235107
>> slabinfo.btrfs_extent_map.num_objs
>> 9392 -10.6% 8396
>> slabinfo.btrfs_extent_map.num_slabs
>> 271938 -10.3% 243802
>> slabinfo.btrfs_inode.active_objs
>> 9804 -10.6% 8768
>> slabinfo.btrfs_inode.active_slabs
>> 273856 -10.4% 245359 slabinfo.btrfs_inode.num_objs
>> 9804 -10.6% 8768 slabinfo.btrfs_inode.num_slabs
>> 7085 5% -5.5% 6692 2% slabinfo.btrfs_path.num_objs
>> 311936 -16.4% 260797 slabinfo.dentry.active_objs
>> 7803 -9.6% 7058 slabinfo.dentry.active_slabs
>> 327759 -9.6% 296439 slabinfo.dentry.num_objs
>> 7803 -9.6% 7058 slabinfo.dentry.num_slabs
>> 2289 -23.3% 1755 6%
>> slabinfo.proc_inode_cache.active_objs
>> 2292 -19.0% 1856 6%
>> slabinfo.proc_inode_cache.num_objs
>> 261546 -12.3% 229485
>> slabinfo.radix_tree_node.active_objs
>> 9404 -11.9% 8288
>> slabinfo.radix_tree_node.active_slabs
>> 263347 -11.9% 232089
>> slabinfo.radix_tree_node.num_objs
>> 9404 -11.9% 8288
>> slabinfo.radix_tree_node.num_slabs
>
> The slab size decreased with the new commit.
>
> From perf-profile result,
>
> 26.81 ± 2% -6.5 20.35 ± 2%
> perf-profile.calltrace.cycles-pp.secondary_startup_64
> 24.48 ± 2% -5.8 18.73
> perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
> 24.48 ± 2% -5.8 18.73
> perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
> 24.48 ± 2% -5.8 18.73
> perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
> 22.80 ± 2% -5.5 17.30 ± 2%
> perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
> 20.20 ± 2% -4.3 15.85
> perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary
> 23.03 ± 2% -2.6 20.42
> perf-profile.calltrace.cycles-pp.sys_rename.entry_SYSCALL_64_fastpath
> 17.02 ± 2% -1.8 15.17 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_rename.vfs_rename.sys_rename.entry_SYSCALL_64_fastpath
> 17.03 ± 2% -1.8 15.19 ± 2%
> perf-profile.calltrace.cycles-pp.vfs_rename.sys_rename.entry_SYSCALL_64_fastpath
> 13.70 ± 2% -1.2 12.47 ± 3%
> perf-profile.calltrace.cycles-pp.__btrfs_unlink_inode.btrfs_rename.vfs_rename.sys_rename.entry_SYSCALL_64_fastpath
> 5.06 ± 3% -1.1 3.96 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_async_run_delayed_root.normal_work_helper.process_one_work.worker_thread.kthread
> 7.37 ± 4% -0.9 6.49 ± 2%
> perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.finish_wait.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot
> 7.32 ± 4% -0.9 6.45 ± 2%
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.finish_wait.btrfs_tree_lock.btrfs_lock_root_node
> 1.54 ± 4% -0.7 0.81 ± 7%
> perf-profile.calltrace.cycles-pp.poll_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary
> 2.33 ± 2% -0.7 1.62 ± 4%
> perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_kernel.secondary_startup_64
> 2.33 ± 2% -0.7 1.62 ± 4%
> perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_kernel.secondary_startup_64
> 2.33 ± 2% -0.7 1.62 ± 4%
> perf-profile.calltrace.cycles-pp.start_kernel.secondary_startup_64
> 2.23 ± 3% -0.7 1.53 ± 4%
> perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_kernel.secondary_startup_64
> 2.13 ± 2% -0.7 1.46 ± 4%
> perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_kernel
> 5.59 -0.7 4.94 ± 3%
> perf-profile.calltrace.cycles-pp.__dentry_kill.dput.sys_rename.entry_SYSCALL_64_fastpath
> 5.60 -0.7 4.94 ± 3%
> perf-profile.calltrace.cycles-pp.dput.sys_rename.entry_SYSCALL_64_fastpath
> 6.96 -0.7 6.31 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_del_inode_ref.__btrfs_unlink_inode.btrfs_rename.vfs_rename.sys_rename
> 5.59 -0.7 4.94 ± 3%
> perf-profile.calltrace.cycles-pp.evict.__dentry_kill.dput.sys_rename.entry_SYSCALL_64_fastpath
> 5.58 -0.6 4.94 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_evict_inode.evict.__dentry_kill.dput.sys_rename
> 6.94 ± 2% -0.6 6.30 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_del_inode_ref.__btrfs_unlink_inode.btrfs_rename.vfs_rename
> 6.66 ± 4% -0.6 6.10 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_dir_item.__btrfs_unlink_inode.btrfs_rename.vfs_rename
> 6.66 ± 4% -0.6 6.10 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_lookup_dir_item.__btrfs_unlink_inode.btrfs_rename.vfs_rename.sys_rename
> 3.38 ± 3% -0.5 2.84 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_delete_delayed_items.btrfs_async_run_delayed_root.normal_work_helper.process_one_work
> 3.40 ± 3% -0.5 2.86 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_delete_delayed_items.btrfs_async_run_delayed_root.normal_work_helper.process_one_work.worker_thread
> 7.30 ± 4% -0.4 6.86 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_lookup_dir_item.__btrfs_unlink_inode
> 1.18 ± 4% -0.4 0.76 ± 2%
> perf-profile.calltrace.cycles-pp.__btrfs_update_delayed_inode.btrfs_async_run_delayed_root.normal_work_helper.process_one_work.worker_thread
> 1.16 ± 4% -0.4 0.74 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_lookup_inode.__btrfs_update_delayed_inode.btrfs_async_run_delayed_root.normal_work_helper.process_one_work
> 5.96 ± 2% -0.4 5.54 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_del_inode_ref.__btrfs_unlink_inode
> 5.96 ± 2% -0.4 5.54 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_del_inode_ref.__btrfs_unlink_inode.btrfs_rename
> 1.16 ± 4% -0.4 0.74 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_inode.__btrfs_update_delayed_inode.btrfs_async_run_delayed_root.normal_work_helper
> 2.95 ± 3% -0.4 2.54 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_delete_delayed_items.btrfs_async_run_delayed_root
> 2.95 ± 3% -0.4 2.54 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_delete_delayed_items.btrfs_async_run_delayed_root.normal_work_helper
> 0.94 ± 2% -0.3 0.59 ± 4%
> perf-profile.calltrace.cycles-pp.shrink_inactive_list.shrink_node_memcg.shrink_node.kswapd.kthread
> 1.25 -0.3 0.91 ± 2%
> perf-profile.calltrace.cycles-pp.shrink_node_memcg.shrink_node.kswapd.kthread.ret_from_fork
> 0.84 ± 2% -0.3 0.52 ± 3%
> perf-profile.calltrace.cycles-pp.shrink_page_list.shrink_inactive_list.shrink_node_memcg.shrink_node.kswapd
> 1.01 -0.3 0.71 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_create.path_openat.do_filp_open.do_sys_open.entry_SYSCALL_64_fastpath
> 0.58 ± 4% -0.2 0.34 ± 70%
> perf-profile.calltrace.cycles-pp.queued_write_lock_slowpath.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_delete_delayed_items
> 1.73 ± 2% -0.2 1.50 ± 2%
> perf-profile.calltrace.cycles-pp.finish_wait.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_del_inode_ref
> 1.67 ± 4% -0.2 1.44 ± 3%
> perf-profile.calltrace.cycles-pp.finish_wait.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_lookup_dir_item
> 1.89 -0.2 1.67 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_commit_inode_delayed_inode.btrfs_evict_inode.evict.__dentry_kill.dput
> 1.88 -0.2 1.66 ± 2%
> perf-profile.calltrace.cycles-pp.__btrfs_update_delayed_inode.btrfs_commit_inode_delayed_inode.btrfs_evict_inode.evict.__dentry_kill
> 1.90 -0.2 1.68 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_truncate_inode_items.btrfs_evict_inode.evict.__dentry_kill.dput
> 1.78 -0.2 1.57 ± 5%
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_del_orphan_item.btrfs_orphan_del.btrfs_evict_inode.evict
> 1.88 -0.2 1.67 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_truncate_inode_items.btrfs_evict_inode.evict.__dentry_kill
> 1.78 -0.2 1.57 ± 5%
> perf-profile.calltrace.cycles-pp.btrfs_orphan_del.btrfs_evict_inode.evict.__dentry_kill.dput
> 1.78 -0.2 1.57 ± 5%
> perf-profile.calltrace.cycles-pp.btrfs_del_orphan_item.btrfs_orphan_del.btrfs_evict_inode.evict.__dentry_kill
> 1.87 -0.2 1.66 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_inode.__btrfs_update_delayed_inode.btrfs_commit_inode_delayed_inode.btrfs_evict_inode
> 1.87 -0.2 1.66 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_lookup_inode.__btrfs_update_delayed_inode.btrfs_commit_inode_delayed_inode.btrfs_evict_inode.evict
> 0.75 ± 11% -0.2 0.57 ± 7%
> perf-profile.calltrace.cycles-pp.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_file_extent.__btrfs_drop_extents
> 0.75 ± 11% -0.2 0.57 ± 7%
> perf-profile.calltrace.cycles-pp.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_file_extent.__btrfs_drop_extents.insert_reserved_file_extent
> 1.39 ± 3% -0.2 1.23 ± 4%
> perf-profile.calltrace.cycles-pp.prepare_to_wait_event.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_delete_delayed_items
> 1.84 -0.2 1.68 ± 3%
> perf-profile.calltrace.cycles-pp.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_rename.vfs_rename.sys_rename
> 1.84 -0.2 1.68 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_unlink_inode.btrfs_rename.vfs_rename.sys_rename.entry_SYSCALL_64_fastpath
> 1.62 -0.2 1.46 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_truncate_inode_items.btrfs_evict_inode.evict
> 0.87 ± 5% -0.2 0.72 ± 5%
> perf-profile.calltrace.cycles-pp.finish_wait.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_delete_delayed_items
> 1.81 -0.2 1.66 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_dir_item.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_rename
> 1.81 -0.2 1.66 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_lookup_dir_item.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_rename.vfs_rename
> 1.62 -0.2 1.46 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_truncate_inode_items.btrfs_evict_inode
> 1.69 ± 2% -0.1 1.55 ± 2%
> perf-profile.calltrace.cycles-pp.end_bio_extent_readpage.normal_work_helper.process_one_work.worker_thread.kthread
> 1.58 -0.1 1.44 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_lookup_inode.__btrfs_update_delayed_inode
> 1.58 -0.1 1.44 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_lookup_inode.__btrfs_update_delayed_inode.btrfs_commit_inode_delayed_inode
> 2.89 ± 3% -0.1 2.77 ± 2%
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath.queued_write_lock_slowpath.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot
> 1.51 -0.1 1.39 ± 5%
> perf-profile.calltrace.cycles-pp.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_del_orphan_item.btrfs_orphan_del
> 1.51 -0.1 1.39 ± 5%
> perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_del_orphan_item.btrfs_orphan_del.btrfs_evict_inode
> 0.94 -0.1 0.82
> perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
> 0.93 -0.1 0.81
> perf-profile.calltrace.cycles-pp.__schedule.schedule_idle.do_idle.cpu_startup_entry.start_secondary
> 1.52 -0.1 1.44 ± 3%
> perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_lookup_dir_item.__btrfs_unlink_inode.btrfs_unlink_inode
> 0.71 ± 3% -0.1 0.66 ± 2%
> perf-profile.calltrace.cycles-pp.prepare_to_wait_event.btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_truncate_inode_items
> 0.60 ± 2% -0.0 0.56 ± 2%
> perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common.wake_up_page_bit
> 1.61 ± 2% +0.1 1.67 ± 2%
> perf-profile.calltrace.cycles-pp.kswapd.kthread.ret_from_fork
> 1.61 ± 2% +0.1 1.67 ± 2%
> perf-profile.calltrace.cycles-pp.shrink_node.kswapd.kthread.ret_from_fork
> 0.55 +0.1 0.68 ± 4%
> perf-profile.calltrace.cycles-pp.find_get_entry.pagecache_get_page.generic_file_read_iter.__vfs_read.vfs_read
> 0.57 +0.1 0.70 ± 4%
> perf-profile.calltrace.cycles-pp.pagecache_get_page.generic_file_read_iter.__vfs_read.vfs_read.sys_read
> 0.59 ± 3% +0.3 0.87
> perf-profile.calltrace.cycles-pp.__account_scheduler_latency.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up
> 1.29 ± 3% +0.3 1.58
> perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common
> 0.54 +0.3 0.83 ± 2%
> perf-profile.calltrace.cycles-pp.queued_read_lock_slowpath.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_file_extent
> 0.84 +0.3 1.18 ± 3%
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.prepare_to_wait_event.btrfs_tree_read_lock.btrfs_read_lock_root_node
> 0.71 ± 4% +0.3 1.05
> perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock
> 0.86 +0.4 1.21 ± 3%
> perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.prepare_to_wait_event.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot
> 0.90 +0.4 1.28 ± 3%
> perf-profile.calltrace.cycles-pp.prepare_to_wait_event.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_dir_item
> 0.35 ± 71% +0.4 0.79 ± 3%
> perf-profile.calltrace.cycles-pp.queued_read_lock_slowpath.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_inode
> 0.98 ± 4% +0.4 1.41 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_inode.btrfs_iget
> 0.98 ± 5% +0.4 1.43 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_inode.btrfs_iget.btrfs_lookup_dentry
> 0.94 ± 3% +0.4 1.39
> perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.btrfs_clear_path_blocking
> 0.96 ± 3% +0.5 1.42
> perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot
> 1.05 ± 2% +0.5 1.52 ± 4%
> perf-profile.calltrace.cycles-pp.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_file_extent.btrfs_get_extent
> 1.06 ± 3% +0.5 1.53 ± 4%
> perf-profile.calltrace.cycles-pp.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_file_extent.btrfs_get_extent.__do_readpage
> 0.97 ± 3% +0.5 1.45
> perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_dir_item
> 0.62 ± 4% +0.5 1.13
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath.queued_read_lock_slowpath.btrfs_clear_lock_blocking_rw.btrfs_clear_path_blocking.btrfs_search_slot
> 0.65 ± 4% +0.5 1.19
> perf-profile.calltrace.cycles-pp.queued_read_lock_slowpath.btrfs_clear_lock_blocking_rw.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_dir_item
> 0.17 ±141% +0.6 0.73
> perf-profile.calltrace.cycles-pp.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity.enqueue_task_fair.ttwu_do_activate
> 0.00 +0.6 0.57 ± 2%
> perf-profile.calltrace.cycles-pp.task_work_run.exit_to_usermode_loop.syscall_return_slowpath.entry_SYSCALL_64_fastpath
> 0.00 +0.6 0.59 ± 2%
> perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.syscall_return_slowpath.entry_SYSCALL_64_fastpath
> 0.00 +0.6 0.60 ± 2%
> perf-profile.calltrace.cycles-pp.syscall_return_slowpath.entry_SYSCALL_64_fastpath
> 0.56 ± 4% +0.6 1.17
> perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_file_extent
> 1.17 +0.6 1.78 ± 2%
> perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.finish_wait.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot
> 1.16 +0.6 1.77 ± 2%
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.finish_wait.btrfs_tree_read_lock.btrfs_read_lock_root_node
> 1.18 +0.6 1.80 ± 2%
> perf-profile.calltrace.cycles-pp.finish_wait.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_dir_item
> 0.57 ± 7% +0.6 1.21 ± 2%
> perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_inode
> 0.75 ± 4% +0.6 1.38
> perf-profile.calltrace.cycles-pp.btrfs_clear_lock_blocking_rw.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_dir_item.btrfs_lookup_dentry
> 1.95 +0.7 2.61
> perf-profile.calltrace.cycles-pp.copy_user_enhanced_fast_string.copyout.copy_page_to_iter.generic_file_read_iter.__vfs_read
> 1.96 +0.7 2.62
> perf-profile.calltrace.cycles-pp.copyout.copy_page_to_iter.generic_file_read_iter.__vfs_read.vfs_read
> 0.00 +0.7 0.70
> perf-profile.calltrace.cycles-pp.__save_stack_trace.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity.enqueue_task_fair
> 2.10 +0.7 2.80
> perf-profile.calltrace.cycles-pp.copy_page_to_iter.generic_file_read_iter.__vfs_read.vfs_read.sys_read
> 0.85 ± 5% +0.7 1.58
> perf-profile.calltrace.cycles-pp.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_file_extent.btrfs_get_extent
> 0.84 ± 6% +0.7 1.57
> perf-profile.calltrace.cycles-pp.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_inode.btrfs_iget
> 0.00 +0.8 0.75 ± 4%
> perf-profile.calltrace.cycles-pp.super_cache_scan.shrink_slab.shrink_node.kswapd.kthread
> 0.00 +0.8 0.75 ± 5%
> perf-profile.calltrace.cycles-pp.shrink_slab.shrink_node.kswapd.kthread.ret_from_fork
> 1.07 ± 5% +0.9 1.98 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_file_extent.btrfs_get_extent.__do_readpage
> 1.09 ± 7% +0.9 2.01 ± 2%
> perf-profile.calltrace.cycles-pp.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_inode.btrfs_iget.btrfs_lookup_dentry
> 4.90 ± 2% +1.3 6.19
> perf-profile.calltrace.cycles-pp.__do_page_cache_readahead.ondemand_readahead.generic_file_read_iter.__vfs_read.vfs_read
> 4.90 ± 2% +1.3 6.20
> perf-profile.calltrace.cycles-pp.ondemand_readahead.generic_file_read_iter.__vfs_read.vfs_read.sys_read
> 4.44 ± 2% +1.3 5.74
> perf-profile.calltrace.cycles-pp.extent_readpages.__do_page_cache_readahead.ondemand_readahead.generic_file_read_iter.__vfs_read
> 2.87 ± 3% +1.4 4.29
> perf-profile.calltrace.cycles-pp.__extent_readpages.extent_readpages.__do_page_cache_readahead.ondemand_readahead.generic_file_read_iter
> 2.22 ± 4% +1.4 3.65
> perf-profile.calltrace.cycles-pp.btrfs_lookup_file_extent.btrfs_get_extent.__do_readpage.__extent_readpages.extent_readpages
> 2.22 ± 4% +1.4 3.65
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_file_extent.btrfs_get_extent.__do_readpage.__extent_readpages
> 2.27 ± 6% +1.4 3.72
> perf-profile.calltrace.cycles-pp.btrfs_lookup_inode.btrfs_iget.btrfs_lookup_dentry.btrfs_lookup.path_openat
> 2.27 ± 6% +1.4 3.72
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_inode.btrfs_iget.btrfs_lookup_dentry.btrfs_lookup
> 2.72 ± 3% +1.4 4.17
> perf-profile.calltrace.cycles-pp.__do_readpage.__extent_readpages.extent_readpages.__do_page_cache_readahead.ondemand_readahead
> 2.33 ± 4% +1.5 3.79
> perf-profile.calltrace.cycles-pp.btrfs_get_extent.__do_readpage.__extent_readpages.extent_readpages.__do_page_cache_readahead
> 2.38 +1.6 3.95
> perf-profile.calltrace.cycles-pp.queued_read_lock_slowpath.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_dir_item
> 2.63 ± 6% +1.7 4.33
> perf-profile.calltrace.cycles-pp.btrfs_iget.btrfs_lookup_dentry.btrfs_lookup.path_openat.do_filp_open
> 1.68 ± 4% +2.1 3.79
> perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_dir_item
> 8.66 +2.2 10.90
> perf-profile.calltrace.cycles-pp.generic_file_read_iter.__vfs_read.vfs_read.sys_read.entry_SYSCALL_64_fastpath
> 8.71 +2.3 10.97
> perf-profile.calltrace.cycles-pp.__vfs_read.vfs_read.sys_read.entry_SYSCALL_64_fastpath
> 8.85 +2.3 11.15
> perf-profile.calltrace.cycles-pp.vfs_read.sys_read.entry_SYSCALL_64_fastpath
> 9.02 +2.3 11.33
> perf-profile.calltrace.cycles-pp.sys_read.entry_SYSCALL_64_fastpath
> 2.71 ± 3% +2.6 5.35
> perf-profile.calltrace.cycles-pp.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_dir_item.btrfs_lookup_dentry
> 4.63 +2.7 7.29
> perf-profile.calltrace.cycles-pp.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_dir_item.btrfs_lookup_dentry
> 4.65 +2.7 7.32
> perf-profile.calltrace.cycles-pp.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_lookup_dir_item.btrfs_lookup_dentry.btrfs_lookup
> 1.94 ± 2% +2.8 4.77
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath.queued_read_lock_slowpath.btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot
> 2.81 ± 4% +3.3 6.15
> perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__wake_up_common_lock.btrfs_clear_path_blocking.btrfs_search_slot
> 3.58 ± 2% +3.4 6.98
> perf-profile.calltrace.cycles-pp.btrfs_clear_path_blocking.btrfs_search_slot.btrfs_lookup_dir_item.btrfs_lookup_dentry.btrfs_lookup
> 8.69 +6.3 15.03
> perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_dir_item.btrfs_lookup_dentry.btrfs_lookup.path_openat
> 8.75 +6.4 15.12
> perf-profile.calltrace.cycles-pp.btrfs_lookup_dir_item.btrfs_lookup_dentry.btrfs_lookup.path_openat.do_filp_open
> 47.34 +8.1 55.46
> perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_fastpath
> 11.47 +8.1 19.60
> perf-profile.calltrace.cycles-pp.btrfs_lookup.path_openat.do_filp_open.do_sys_open.entry_SYSCALL_64_fastpath
> 11.46 +8.1 19.59
> perf-profile.calltrace.cycles-pp.btrfs_lookup_dentry.btrfs_lookup.path_openat.do_filp_open.do_sys_open
> 13.90 +8.3 22.20
> perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_open.entry_SYSCALL_64_fastpath
> 13.91 +8.3 22.22
> perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_open.entry_SYSCALL_64_fastpath
> 14.13 +8.4 22.52
> perf-profile.calltrace.cycles-pp.do_sys_open.entry_SYSCALL_64_fastpath
>
> The cycles for dentry lookup increased much too. Is this the reason why
> write score decreased?
>
> If you need more information, please let me know.
>
> Best Regards,
> Huang, Ying
>
>> 1140424 12% +40.2% 1598980 14%
>> sched_debug.cfs_rq:/.MIN_vruntime.max
>> 790.55 +13.0% 893.20 3%
>> sched_debug.cfs_rq:/.exec_clock.stddev
>> 1140425 12% +40.2% 1598982 14%
>> sched_debug.cfs_rq:/.max_vruntime.max
>> 0.83 10% +21.5% 1.00 8%
>> sched_debug.cfs_rq:/.nr_running.avg
>> 3.30 99% +266.3% 12.09 13%
>> sched_debug.cfs_rq:/.removed.load_avg.avg
>> 153.02 97% +266.6% 560.96 13%
>> sched_debug.cfs_rq:/.removed.runnable_sum.avg
>> 569.93 102% +173.2% 1556 14%
>> sched_debug.cfs_rq:/.removed.runnable_sum.stddev
>> 1.42 60% +501.5% 8.52 34%
>> sched_debug.cfs_rq:/.removed.util_avg.avg
>> 19.88 59% +288.9% 77.29 16%
>> sched_debug.cfs_rq:/.removed.util_avg.max
>> 5.05 58% +342.3% 22.32 22%
>> sched_debug.cfs_rq:/.removed.util_avg.stddev
>> 791.44 3% +47.7% 1168 8% sched_debug.cfs_rq:/.util_avg.avg
>> 1305 6% +33.2% 1738 5% sched_debug.cfs_rq:/.util_avg.max
>> 450.25 11% +66.2% 748.17 14% sched_debug.cfs_rq:/.util_avg.min
>> 220.82 8% +21.1% 267.46 5%
>> sched_debug.cfs_rq:/.util_avg.stddev
>> 363118 11% -23.8% 276520 11% sched_debug.cpu.avg_idle.avg
>> 726003 8% -30.8% 502313 4% sched_debug.cpu.avg_idle.max
>> 202629 3% -32.2% 137429 18% sched_debug.cpu.avg_idle.stddev
>> 31.96 28% +54.6% 49.42 14% sched_debug.cpu.cpu_load[3].min
>> 36.21 25% +64.0% 59.38 6% sched_debug.cpu.cpu_load[4].min
>> 1007 5% +20.7% 1216 7% sched_debug.cpu.curr->pid.avg
>> 4.50 5% +14.8% 5.17 5% sched_debug.cpu.nr_running.max
>> 2476195 -11.8% 2185022 sched_debug.cpu.nr_switches.max
>> 212888 -26.6% 156172 3%
>> sched_debug.cpu.nr_switches.stddev
>> 3570 2% -58.7% 1474 2%
>> sched_debug.cpu.nr_uninterruptible.max
>> -803.67 -28.7% -573.38
>> sched_debug.cpu.nr_uninterruptible.min
>> 1004 2% -50.4% 498.55 3%
>> sched_debug.cpu.nr_uninterruptible.stddev
>> 2478809 -11.7% 2189310 sched_debug.cpu.sched_count.max
>> 214130 -26.5% 157298 3%
>> sched_debug.cpu.sched_count.stddev
>> 489430 2% -16.6% 408309 2% sched_debug.cpu.sched_goidle.avg
>> 724333 2% -28.2% 520263 2% sched_debug.cpu.sched_goidle.max
>> 457611 -18.1% 374746 3% sched_debug.cpu.sched_goidle.min
>> 62957 2% -47.4% 33138 3%
>> sched_debug.cpu.sched_goidle.stddev
>> 676053 2% -15.4% 571816 2% sched_debug.cpu.ttwu_local.max
>> 42669 3% +22.3% 52198 sched_debug.cpu.ttwu_local.min
>> 151873 2% -18.3% 124118 2% sched_debug.cpu.ttwu_local.stddev
>>
>>
>>
>>
>> blogbench.write_score
>>
>>
>>
>> 3300
>> +-+------------------------------------------------------------------+
>> 3250 +-+ +. .+ +. .+ : : : +. .+ .+.+.+.
>> .|
>> |: +. .+ +.+.+.+ + + + : +. : : +. + +.+ + +
>> |
>> 3200 +-+ + +.+ + : + + : + +
>> |
>> 3150 +-+.+ ++ +.+
>> |
>> 3100 +-+
>> |
>> 3050 +-+
>> |
>> |
>> |
>> 3000 +-+
>> |
>> 2950 +-+ O O
>> |
>> 2900 +-O O O O
>> |
>> 2850 +-+ O O O O O O O OO O O O
>> |
>> | O O O O
>> |
>> 2800 O-+ O O
>> |
>> 2750
>> +-+------------------------------------------------------------------+
>>
>>
>>
>>
>>
>> [*] bisect-good sample
>> [O] bisect-bad sample
>>
>>
>>
>> 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.
>>
>>
>> Thanks,
>> Xiaolong
> _______________________________________________
> LKP mailing list
> l...@lists.01.org
> https://lists.01.org/mailman/listinfo/lkp
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