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Red Hat Bugzilla – Attachment 654977 Details for
Bug 866988
kswapd using 100%cpu for extended period on i686 kvm vhost - rawhide
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kswapd.txt output from perf command with kswapd0 at 100% cpu
kswapd.txt (text/plain), 55.62 KB, created by
John Ellson
on 2012-11-30 12:24:31 UTC
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Description:
kswapd.txt output from perf command with kswapd0 at 100% cpu
Filename:
MIME Type:
Creator:
John Ellson
Created:
2012-11-30 12:24:31 UTC
Size:
55.62 KB
patch
obsolete
># ======== ># captured on: Fri Nov 30 07:22:00 2012 ># hostname : rawhide ># os release : 3.7.0-0.rc7.git1.2.van.main.knurd.kswap.3.fc18.i686 ># perf version : 3.7.0-0.rc7.git1.2.van.main.knurd.kswap.3.fc18.i686 ># arch : i686 ># nrcpus online : 1 ># nrcpus avail : 1 ># cpudesc : QEMU Virtual CPU version 1.0.1 ># cpuid : AuthenticAMD,6,2,3 ># total memory : 1027716 kB ># cmdline : /usr/bin/perf record -g -a sleep 5 ># event : name = cpu-clock, type = 1, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, excl_host = 0, excl_guest = 1, precise_ip = 0, id = { 7 } ># HEADER_CPU_TOPOLOGY info available, use -I to display ># pmu mappings: software = 1, tracepoint = 2, breakpoint = 5 ># ======== ># ># Samples: 20K of event 'cpu-clock' ># Event count (approx.): 20016 ># ># Overhead Command Shared Object Symbol ># ........ ........... ......................... ................................... ># > 16.52% kswapd0 [kernel.kallsyms] [k] idr_get_next > | > --- idr_get_next > | > |--99.76%-- css_get_next > | mem_cgroup_iter > | | > | |--50.49%-- shrink_zone > | | kswapd > | | kthread > | | ret_from_kernel_thread > | | > | --49.51%-- kswapd > | kthread > | ret_from_kernel_thread > --0.24%-- [...] > > 11.23% kswapd0 [kernel.kallsyms] [k] prune_super > | > --- prune_super > | > |--86.74%-- shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --13.26%-- kswapd > kthread > ret_from_kernel_thread > > 10.73% kswapd0 [kernel.kallsyms] [k] shrink_slab > | > --- shrink_slab > | > |--99.58%-- kswapd > | kthread > | ret_from_kernel_thread > --0.42%-- [...] > > 7.36% kswapd0 [kernel.kallsyms] [k] grab_super_passive > | > --- grab_super_passive > | > |--92.46%-- prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --7.54%-- shrink_slab > kswapd > kthread > ret_from_kernel_thread > > 5.82% kswapd0 [kernel.kallsyms] [k] _raw_spin_lock > | > --- _raw_spin_lock > | > |--34.28%-- put_super > | drop_super > | prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > |--30.50%-- grab_super_passive > | prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > |--17.27%-- prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > |--16.15%-- drop_super > | prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > |--1.20%-- mb_cache_shrink_fn > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --0.60%-- shrink_slab > kswapd > kthread > ret_from_kernel_thread > > 4.43% kswapd0 [kernel.kallsyms] [k] fill_contig_page_info > | > --- fill_contig_page_info > | > |--99.10%-- fragmentation_index > | compaction_suitable > | kswapd > | kthread > | ret_from_kernel_thread > | > --0.90%-- compaction_suitable > kswapd > kthread > ret_from_kernel_thread > > 3.81% kswapd0 [kernel.kallsyms] [k] shrink_lruvec > | > --- shrink_lruvec > | > |--99.34%-- shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --0.66%-- kswapd > kthread > ret_from_kernel_thread > > 3.66% kswapd0 [kernel.kallsyms] [k] down_read_trylock > | > --- down_read_trylock > | > |--71.86%-- grab_super_passive > | prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > |--24.73%-- prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > |--2.60%-- shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --0.82%-- kswapd > kthread > ret_from_kernel_thread > > 3.24% kswapd0 [kernel.kallsyms] [k] __zone_watermark_ok > | > --- __zone_watermark_ok > | > |--47.84%-- zone_watermark_ok > | compaction_suitable > | kswapd > | kthread > | ret_from_kernel_thread > | > |--45.22%-- zone_watermark_ok_safe > | zone_balanced > | kswapd > | kthread > | ret_from_kernel_thread > | > |--3.86%-- compaction_suitable > | kswapd > | kthread > | ret_from_kernel_thread > | > --3.09%-- zone_balanced > kswapd > kthread > ret_from_kernel_thread > > 3.02% kswapd0 [kernel.kallsyms] [k] up_read > | > --- up_read > | > |--64.13%-- drop_super > | prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > |--31.57%-- prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > |--2.64%-- shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --1.65%-- kswapd > kthread > ret_from_kernel_thread > > 2.68% kswapd0 [kernel.kallsyms] [k] kswapd > | > --- kswapd > kthread > ret_from_kernel_thread > > 2.52% kswapd0 [kernel.kallsyms] [k] shrink_inactive_list > | > --- shrink_inactive_list > | > |--98.81%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --1.19%-- shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 2.13% kswapd0 [kernel.kallsyms] [k] mem_cgroup_iter > | > --- mem_cgroup_iter > | > |--54.93%-- shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > |--43.66%-- kswapd > | kthread > | ret_from_kernel_thread > | > --1.41%-- kthread > ret_from_kernel_thread > > 1.95% kswapd0 [kernel.kallsyms] [k] drop_super > | > --- drop_super > | > |--75.19%-- prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --24.81%-- shrink_slab > kswapd > kthread > ret_from_kernel_thread > > 1.93% kswapd0 [kernel.kallsyms] [k] div64_u64 > | > --- div64_u64 > | > |--90.67%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --9.33%-- shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 1.87% kswapd0 [kernel.kallsyms] [k] put_super > | > --- put_super > | > |--75.13%-- drop_super > | prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --24.87%-- prune_super > shrink_slab > kswapd > kthread > ret_from_kernel_thread > > 1.85% kswapd0 [kernel.kallsyms] [k] __put_super > | > --- __put_super > | > |--69.19%-- put_super > | drop_super > | prune_super > | shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --30.81%-- drop_super > prune_super > shrink_slab > kswapd > kthread > ret_from_kernel_thread > > 1.53% kswapd0 [kernel.kallsyms] [k] __fragmentation_index > | > --- __fragmentation_index > | > |--95.42%-- fragmentation_index > | compaction_suitable > | kswapd > | kthread > | ret_from_kernel_thread > | > --4.58%-- compaction_suitable > kswapd > kthread > ret_from_kernel_thread > > 1.46% kswapd0 [kernel.kallsyms] [k] zone_balanced > | > --- zone_balanced > | > |--58.36%-- kswapd > | kthread > | ret_from_kernel_thread > | > --41.64%-- kthread > ret_from_kernel_thread > > 1.22% kswapd0 [kernel.kallsyms] [k] zone_watermark_ok_safe > | > --- zone_watermark_ok_safe > | > |--90.61%-- zone_balanced > | kswapd > | kthread > | ret_from_kernel_thread > | > --9.39%-- kswapd > kthread > ret_from_kernel_thread > > 1.01% kswapd0 [kernel.kallsyms] [k] compaction_suitable > | > --- compaction_suitable > | > |--88.61%-- kswapd > | kthread > | ret_from_kernel_thread > | > --11.39%-- kthread > ret_from_kernel_thread > > 0.90% kswapd0 [kernel.kallsyms] [k] zone_reclaimable_pages > | > --- zone_reclaimable_pages > | > |--75.69%-- kswapd > | kthread > | ret_from_kernel_thread > | > |--18.78%-- global_dirtyable_memory > | global_dirty_limits > | throttle_vm_writeout > | shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > |--3.87%-- kthread > | ret_from_kernel_thread > | > --1.66%-- global_dirty_limits > throttle_vm_writeout > shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.79% kswapd0 [kernel.kallsyms] [k] css_get_next > | > --- css_get_next > | > |--84.28%-- mem_cgroup_iter > | | > | |--51.49%-- shrink_zone > | | kswapd > | | kthread > | | ret_from_kernel_thread > | | > | --48.51%-- kswapd > | kthread > | ret_from_kernel_thread > | > |--10.06%-- kswapd > | kthread > | ret_from_kernel_thread > | > --5.66%-- shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.78% kswapd0 [kernel.kallsyms] [k] lru_add_drain_cpu > | > --- lru_add_drain_cpu > | > |--91.03%-- lru_add_drain > | shrink_inactive_list > | shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --8.97%-- shrink_inactive_list > shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.63% kswapd0 [kernel.kallsyms] [k] zone_watermark_ok > | > --- zone_watermark_ok > | > |--81.75%-- compaction_suitable > | kswapd > | kthread > | ret_from_kernel_thread > | > --18.25%-- kswapd > kthread > ret_from_kernel_thread > > 0.62% top [kernel.kallsyms] [k] cfb_imageblit > | > --- cfb_imageblit > | > |--99.19%-- bit_putcs > | fbcon_putcs > | | > | |--92.68%-- do_con_write.part.16 > | | con_write > | | n_tty_write > | | tty_write > | | vfs_write > | | sys_write > | | sysenter_do_call > | | 0xb77b0424 > | | > | --7.32%-- do_update_region > | do_con_write.part.16 > | con_write > | n_tty_write > | tty_write > | vfs_write > | sys_write > | sysenter_do_call > | 0xb77b0424 > | > --0.81%-- soft_cursor > bit_cursor > fbcon_cursor > set_cursor > con_flush_chars > con_write > n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > 0x421dbb95 > > 0.50% kswapd0 [kernel.kallsyms] [k] mb_cache_shrink_fn > | > --- mb_cache_shrink_fn > | > |--57.43%-- shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --42.57%-- kswapd > kthread > ret_from_kernel_thread > > 0.48% kswapd0 [kernel.kallsyms] [k] mem_cgroup_zone_lruvec > | > --- mem_cgroup_zone_lruvec > | > |--49.48%-- shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > |--47.42%-- kswapd > | kthread > | ret_from_kernel_thread > | > --3.09%-- kthread > ret_from_kernel_thread > > 0.44% kswapd0 [kernel.kallsyms] [k] global_dirty_limits > | > --- global_dirty_limits > | > |--71.59%-- throttle_vm_writeout > | shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --28.41%-- shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.41% kswapd0 [kvm] [k] mmu_shrink > | > --- mmu_shrink > | > |--51.22%-- kswapd > | kthread > | ret_from_kernel_thread > | > --48.78%-- shrink_slab > kswapd > kthread > ret_from_kernel_thread > > 0.39% kswapd0 [kernel.kallsyms] [k] global_dirtyable_memory > | > --- global_dirtyable_memory > | > |--64.56%-- global_dirty_limits > | throttle_vm_writeout > | shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --35.44%-- throttle_vm_writeout > shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.38% kswapd0 [kernel.kallsyms] [k] get_lru_size > | > --- get_lru_size > | > |--52.63%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --47.37%-- shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.35% kswapd0 [kernel.kallsyms] [k] throttle_vm_writeout > | > --- throttle_vm_writeout > | > |--94.37%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --5.63%-- shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.32% kswapd0 [kernel.kallsyms] [k] mem_cgroup_get_lru_size > | > --- mem_cgroup_get_lru_size > | > |--70.31%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --29.69%-- get_lru_size > shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.31% kswapd0 [kernel.kallsyms] [k] mem_cgroup_inactive_anon_is_low > | > --- mem_cgroup_inactive_anon_is_low > | > |--80.95%-- inactive_anon_is_low > | | > | |--74.51%-- shrink_lruvec > | | shrink_zone > | | kswapd > | | kthread > | | ret_from_kernel_thread > | | > | --25.49%-- kswapd > | kthread > | ret_from_kernel_thread > | > |--17.46%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --1.59%-- kswapd > kthread > ret_from_kernel_thread > > 0.24% kswapd0 [kernel.kallsyms] [k] fragmentation_index > | > --- fragmentation_index > | > |--67.35%-- compaction_suitable > | kswapd > | kthread > | ret_from_kernel_thread > | > --32.65%-- kswapd > kthread > ret_from_kernel_thread > > 0.24% kswapd0 [kernel.kallsyms] [k] shrink_dqcache_memory > | > --- shrink_dqcache_memory > | > |--83.33%-- shrink_slab > | kswapd > | kthread > | ret_from_kernel_thread > | > --16.67%-- kswapd > kthread > ret_from_kernel_thread > > 0.21% kswapd0 [kernel.kallsyms] [k] inactive_anon_is_low > | > --- inactive_anon_is_low > | > |--57.14%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > |--21.43%-- shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > |--16.67%-- kswapd > | kthread > | ret_from_kernel_thread > | > --4.76%-- kthread > ret_from_kernel_thread > > 0.20% kswapd0 [kernel.kallsyms] [k] blk_finish_plug > | > --- blk_finish_plug > | > |--65.85%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --34.15%-- shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.20% kswapd0 [kernel.kallsyms] [k] _cond_resched > | > --- _cond_resched > | > |--51.22%-- kswapd > | kthread > | ret_from_kernel_thread > | > --48.78%-- shrink_slab > kswapd > kthread > ret_from_kernel_thread > > 0.19% kswapd0 [kernel.kallsyms] [k] shrink_zone > | > --- shrink_zone > | > |--89.47%-- kswapd > | kthread > | ret_from_kernel_thread > | > --10.53%-- kthread > ret_from_kernel_thread > > 0.19% kswapd0 [kernel.kallsyms] [k] mem_cgroup_soft_limit_reclaim > | > --- mem_cgroup_soft_limit_reclaim > | > |--78.95%-- kswapd > | kthread > | ret_from_kernel_thread > | > --21.05%-- kthread > ret_from_kernel_thread > > 0.19% kswapd0 [kernel.kallsyms] [k] blk_flush_plug_list > | > --- blk_flush_plug_list > | > |--86.84%-- blk_finish_plug > | shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --13.16%-- shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.18% kswapd0 [kernel.kallsyms] [k] blk_start_plug > | > --- blk_start_plug > | > |--51.35%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --48.65%-- shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.18% kswapd0 [kernel.kallsyms] [k] lru_add_drain > | > --- lru_add_drain > | > |--83.33%-- shrink_inactive_list > | shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --16.67%-- shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.15% kswapd0 [kernel.kallsyms] [k] _raw_spin_lock_irq > | > --- _raw_spin_lock_irq > | > |--70.00%-- shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > |--20.00%-- shrink_inactive_list > | shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --10.00%-- shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.14% kswapd0 [kernel.kallsyms] [k] global_reclaimable_pages > | > --- global_reclaimable_pages > | > |--78.57%-- global_dirtyable_memory > | global_dirty_limits > | throttle_vm_writeout > | shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --21.43%-- global_dirty_limits > throttle_vm_writeout > shrink_lruvec > shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.07% kswapd0 [kernel.kallsyms] [k] mem_cgroup_inactive_file_is_low > | > --- mem_cgroup_inactive_file_is_low > | > |--57.14%-- shrink_lruvec > | shrink_zone > | kswapd > | kthread > | ret_from_kernel_thread > | > --42.86%-- shrink_zone > kswapd > kthread > ret_from_kernel_thread > > 0.05% kswapd0 [kernel.kallsyms] [k] css_id > | > --- css_id > | > |--63.64%-- mem_cgroup_iter > | kswapd > | kthread > | ret_from_kernel_thread > | > --36.36%-- kswapd > kthread > ret_from_kernel_thread > > 0.02% top [kernel.kallsyms] [k] _raw_spin_unlock_irqrestore > | > --- _raw_spin_unlock_irqrestore > | > |--60.00%-- console_unlock > | | > | |--66.67%-- do_con_write.part.16 > | | con_write > | | n_tty_write > | | tty_write > | | vfs_write > | | sys_write > | | sysenter_do_call > | | 0xb77b0424 > | | > | --33.33%-- con_flush_chars > | con_write > | n_tty_write > | tty_write > | vfs_write > | sys_write > | sysenter_do_call > | 0xb77b0424 > | > |--20.00%-- do_task_stat > | proc_tgid_stat > | proc_single_show > | seq_read > | vfs_read > | sys_read > | sysenter_do_call > | 0xb77b0424 > | 0x20302030 > | > --20.00%-- down > console_lock > do_con_write.part.16 > con_write > n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.02% perf [kernel.kallsyms] [k] __copy_from_user_ll_nozero > | > --- __copy_from_user_ll_nozero > iov_iter_copy_from_user_atomic > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.01% top libc-2.16.90.so (deleted) [.] 0x00076944 > | > |--33.33%-- 0x42238944 > | 0x422d69bc > | > |--33.33%-- 0x42218102 > | 0x4222d08d > | 0x616d2d6d > | > --33.33%-- 0x42218db1 > 0x4222d08d > 0x8049970 > 0xa > 0x1f1b1816 > > 0.01% top [vdso] [.] 0x00000424 > | > --- 0xb77b0424 > > 0.01% perf [kernel.kallsyms] [k] mark_buffer_dirty > | > --- mark_buffer_dirty > block_write_end > generic_write_end > ext4_da_write_end > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.01% kworker/0:0 [kernel.kallsyms] [k] _raw_spin_unlock_irqrestore > | > --- _raw_spin_unlock_irqrestore > ata_sff_hsm_move > ata_sff_pio_task > process_one_work > worker_thread > kthread > ret_from_kernel_thread > > 0.00% top [kernel.kallsyms] [k] nsec_to_clock_t > | > --- nsec_to_clock_t > do_task_stat > proc_tgid_stat > proc_single_show > seq_read > vfs_read > sys_read > sysenter_do_call > 0xb77b0424 > 0x20343132 > > 0.00% top [kernel.kallsyms] [k] remove_wait_queue > | > --- remove_wait_queue > n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] path_put > | > --- path_put > __audit_syscall_exit > sysexit_audit > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] next_tgid > | > --- next_tgid > proc_pid_readdir > proc_root_readdir > vfs_readdir > sys_getdents > sysenter_do_call > 0xb77b0424 > 0x1 > > 0.00% top [kernel.kallsyms] [k] avc_has_perm_noaudit > | > --- avc_has_perm_noaudit > selinux_inode_permission > security_inode_permission > __inode_permission > inode_permission > link_path_walk > path_lookupat > filename_lookup > user_path_at_empty > user_path_at > vfs_fstatat > vfs_stat > sys_stat64 > sysenter_do_call > 0xb77b0424 > (nil) > > 0.00% top [kernel.kallsyms] [k] avc_has_perm_flags > | > --- avc_has_perm_flags > file_has_perm > selinux_file_permission > security_file_permission > rw_verify_area > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] selinux_file_permission > | > --- selinux_file_permission > security_file_permission > rw_verify_area > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] get_color.isra.12 > | > --- get_color.isra.12 > fbcon_putcs > do_con_write.part.16 > con_write > n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] n_tty_write > | > --- n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] conv_uni_to_pc > | > --- conv_uni_to_pc > do_con_write.part.16 > con_write > n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] con_flush_chars > | > --- con_flush_chars > con_write > n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] do_con_write.part.16 > | > --- do_con_write.part.16 > con_write > n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] notifier_call_chain > | > --- notifier_call_chain > __atomic_notifier_call_chain > atomic_notifier_call_chain > notify_write > do_con_write.part.16 > con_write > n_tty_write > tty_write > vfs_write > sys_write > sysenter_do_call > 0xb77b0424 > > 0.00% top [kernel.kallsyms] [k] sysenter_past_esp > | > --- sysenter_past_esp > 0xb77b0424 > 0x1 > > 0.00% sleep libc-2.16.90.so [.] _nl_intern_locale_data > | > --- _nl_intern_locale_data > 0x13 > > 0.00% sleep [kernel.kallsyms] [k] native_flush_tlb_single > | > --- native_flush_tlb_single > __do_fault > handle_pte_fault > handle_mm_fault > __do_page_fault > do_page_fault > do_async_page_fault > error_code > .L248 > .L175 > _dl_sysdep_start > 0x90340fe5 > > 0.00% sleep [kernel.kallsyms] [k] kmap_atomic_prot > | > --- kmap_atomic_prot > kmap_atomic > handle_mm_fault > __do_page_fault > do_page_fault > do_async_page_fault > error_code > _nl_load_locale_from_archive > setlocale > 0x8048f1b > __libc_start_main > > 0.00% sleep [kernel.kallsyms] [k] find_get_page > | > --- find_get_page > __do_fault > handle_pte_fault > handle_mm_fault > __do_page_fault > do_page_fault > do_async_page_fault > error_code > strcmp > _dl_sysdep_start > > 0.00% sleep [kernel.kallsyms] [k] unmap_single_vma > | > --- unmap_single_vma > unmap_vmas > exit_mmap > mmput > flush_old_exec > load_elf_binary > search_binary_handler > do_execve > sys_execve > sysenter_do_call > 0xb77cc424 > > 0.00% sleep [kernel.kallsyms] [k] __mem_cgroup_uncharge_common > | > --- __mem_cgroup_uncharge_common > mem_cgroup_uncharge_page > page_remove_rmap > unmap_single_vma > unmap_vmas > exit_mmap > mmput > exit_mm > do_exit > do_group_exit > sys_exit_group > sysenter_do_call > > 0.00% sleep [kernel.kallsyms] [k] dm_table_find_target > | > --- dm_table_find_target > __bio_add_page.part.14 > bio_add_page > do_mpage_readpage > mpage_readpages > ext4_readpages > __do_page_cache_readahead > ra_submit > ondemand_readahead > page_cache_sync_readahead > generic_file_aio_read > do_sync_read > vfs_read > kernel_read > prepare_binprm > do_execve > sys_execve > sysenter_do_call > 0xb77cc424 > execvp > cmd_record > run_builtin > main > __libc_start_main > > 0.00% perf libc-2.16.90.so [.] __GI___libc_poll > | > --- __GI___libc_poll > run_builtin > main > __libc_start_main > > 0.00% perf [kernel.kallsyms] [k] __kunmap_atomic > | > --- __kunmap_atomic > iov_iter_copy_from_user_atomic > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.00% perf [kernel.kallsyms] [k] release_pages > | > --- release_pages > pagevec_lru_move_fn > __pagevec_lru_add > __lru_cache_add > add_to_page_cache_lru > grab_cache_page_write_begin > ext4_da_write_begin > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.00% perf [kernel.kallsyms] [k] __set_page_dirty > | > --- __set_page_dirty > mark_buffer_dirty > __block_commit_write.isra.17 > block_write_end > generic_write_end > ext4_da_write_end > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.00% perf [kernel.kallsyms] [k] __find_get_block_slow > | > --- __find_get_block_slow > unmap_underlying_metadata > __block_write_begin > ext4_da_write_begin > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.00% perf [kernel.kallsyms] [k] __getblk > | > --- __getblk > __ext4_get_inode_loc > ext4_get_inode_loc > ext4_reserve_inode_write > ext4_mark_inode_dirty > ext4_dirty_inode > __mark_inode_dirty > generic_write_end > ext4_da_write_end > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.00% perf [kernel.kallsyms] [k] ext4_nonda_switch > | > --- ext4_nonda_switch > ext4_da_write_begin > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.00% perf [kernel.kallsyms] [k] ext4_dirty_inode > | > --- ext4_dirty_inode > generic_write_end > ext4_da_write_end > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.00% perf [kernel.kallsyms] [k] __do_page_fault > | > --- __do_page_fault > do_page_fault > do_async_page_fault > error_code > generic_file_buffered_write > __generic_file_aio_write > generic_file_aio_write > ext4_file_write > do_sync_write > vfs_write > sys_write > sysenter_do_call > 0xb77cc424 > run_builtin > main > __libc_start_main > > 0.00% kworker/0:0 [kernel.kallsyms] [k] __do_softirq > | > --- __do_softirq > > 0.00% kswapd0 [kernel.kallsyms] [k] finish_task_switch > | > --- finish_task_switch > __schedule > __cond_resched > _cond_resched > shrink_slab > kswapd > kthread > ret_from_kernel_thread > > > ># ># (For a higher level overview, try: perf report --sort comm,dso) >#
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