Linux 性能优化工具 perf top

1. perfperf 是一个调查 Linux 中各种性能问题的有力工具。NAME perf - Performance analysis tools for LinuxSYNOPSIS perf [--version] [--help] COMMAND [ARGS]DESCRIPTION Performance counters for Linux are a new kernel-based subsystem that provide a framework for all things performance analysis. It covers hardware level （CPU/PMU, Performance Monitoring Unit） features and software features （software counters, tracepoints） as well.SEE ALSO perf-stat（1）, perf-top（1）, perf-record（1）, perf-report（1）, perf-list（1）性能 counter 是 Linux 新内核中提供了专门的子系统 , 该子系统提供了一个专门的框架用于各种性能分析。包括各种硬件性能指标和软件性能指标。perf 包含了：perf-stat （perf stat）, perf-top （perf top）, perf-record （perf record）, perf-list （perf list）注意：在查看manual时需要使用 man perf-top, 但是执行命令时使用：perf top2. perf listperf list 主要是用于列出有哪些可用的event，可以供 perf top -e eventname 来分析。perf list [hw|sw|cache|tracepoint|pmu|event_glob]perf list hw 可以列出 hard ware 的event, sw 是software的event, 其它类似[root@localhost ~]# perf list hw[root@localhost ~]# perf list swcpu-clock[Software event]task-clock [Software event]page-faults OR faults[Software event]context-switches OR cs [Software event]cpu-migrations OR migrations [Software event]minor-faults [Software event]major-faults [Software event]alignment-faults [Software event]emulation-faults [Software event]dummy[Software event]
[root@localhost ~]# perf list pmu
[root@localhost ~]# perf list event_glob

List of pre-defined events （to be used in -e）:
[root@localhost ~]#perf list tracepoint 有搞定700多个（tracepoint events）： ext4:ext4_free_inode [Tracepoint event]ext4:ext4_request_inode[Tracepoint event]ext4:ext4_allocate_inode [Tracepoint event]ext4:ext4_write_begin[Tracepoint event]ext4:ext4_da_write_begin [Tracepoint event]ext4:ext4_ordered_write_end[Tracepoint event]ext4:ext4_writeback_write_end[Tracepoint event]ext4:ext4_journalled_write_end [Tracepoint event]ext4:ext4_da_write_end [Tracepoint event]ext4:ext4_writepage[Tracepoint event]ext4:ext4_da_writepages[Tracepoint event]ext4:ext4_da_write_pages [Tracepoint event]ext4:ext4_da_writepages_result [Tracepoint event]ext4:ext4_discard_blocks [Tracepoint event]ext4:ext4_mb_new_inode_pa[Tracepoint event]ext4:ext4_mb_new_group_pa[Tracepoint event]ext4:ext4_mb_release_inode_pa[Tracepoint event]ext4:ext4_mb_release_group_pa[Tracepoint event]ext4:ext4_discard_preallocations [Tracepoint event]ext4:ext4_mb_discard_preallocations[Tracepoint event]ext4:ext4_request_blocks [Tracepoint event]ext4:ext4_allocate_blocks[Tracepoint event]ext4:ext4_free_blocks[Tracepoint event]ext4:ext4_sync_file[Tracepoint event]ext4:ext4_sync_fs[Tracepoint event]ext4:ext4_alloc_da_blocks[Tracepoint event]ext4:ext4_mballoc_alloc[Tracepoint event]ext4:ext4_mballoc_prealloc [Tracepoint event]ext4:ext4_mballoc_discard[Tracepoint event]ext4:ext4_mballoc_free [Tracepoint event]ext4:ext4_trim_extent[Tracepoint event]ext4:ext4_trim_all_free[Tracepoint event]ext4:ext4_update_reserve_space [Tracepoint event]jbd2:jbd2_checkpoint [Tracepoint event]jbd2:jbd2_start_commit [Tracepoint event]jbd2:jbd2_commit_locking [Tracepoint event]jbd2:jbd2_commit_flushing[Tracepoint event]jbd2:jbd2_commit_logging [Tracepoint event]jbd2:jbd2_drop_transaction [Tracepoint event]jbd2:jbd2_end_commit [Tracepoint event]jbd2:jbd2_submit_inode_data[Tracepoint event]jbd2:jbd2_run_stats[Tracepoint event]jbd2:jbd2_checkpoint_stats [Tracepoint event]jbd2:jbd2_update_superblock_end[Tracepoint event]skb:kfree_skb[Tracepoint event]skb:consume_skb[Tracepoint event]skb:skb_copy_datagram_iovec[Tracepoint event]net:net_dev_xmit [Tracepoint event]net:net_dev_queue[Tracepoint event]net:netif_receive_skb[Tracepoint event]net:netif_rx [Tracepoint event]napi:napi_poll [Tracepoint event]sock:sock_rcvqueue_full[Tracepoint event]sock:sock_exceed_buf_limit [Tracepoint event]udp:udp_fail_queue_rcv_skb [Tracepoint event]scsi:scsi_dispatch_cmd_start [Tracepoint event]scsi:scsi_dispatch_cmd_error [Tracepoint event]scsi:scsi_dispatch_cmd_done[Tracepoint event]scsi:scsi_dispatch_cmd_timeout [Tracepoint event]scsi:scsi_eh_wakeup[Tracepoint event]ras:aer_event[Tracepoint event]block:block_rq_abort [Tracepoint event]block:block_rq_requeue [Tracepoint event]block:block_rq_complete[Tracepoint event]block:block_rq_insert[Tracepoint event]block:block_rq_issue [Tracepoint event]block:block_bio_bounce [Tracepoint event]block:block_bio_complete [Tracepoint event]block:block_bio_backmerge[Tracepoint event]block:block_bio_frontmerge [Tracepoint event]block:block_bio_queue[Tracepoint event]block:block_getrq[Tracepoint event]block:block_sleeprq[Tracepoint event]block:block_plug [Tracepoint event]block:block_unplug_timer [Tracepoint event]block:block_unplug_io[Tracepoint event]block:block_split[Tracepoint event]block:block_remap[Tracepoint event]block:block_rq_remap [Tracepoint event]writeback:writeback_nothread [Tracepoint event]writeback:writeback_queue[Tracepoint event]writeback:writeback_exec [Tracepoint event]writeback:writeback_pages_written[Tracepoint event]writeback:writeback_nowork [Tracepoint event]writeback:writeback_bdi_register [Tracepoint event]writeback:writeback_bdi_unregister [Tracepoint event]writeback:writeback_task_start [Tracepoint event]writeback:writeback_task_stop[Tracepoint event]writeback:wbc_writeback_start[Tracepoint event]writeback:wbc_writeback_written[Tracepoint event]writeback:wbc_writeback_wait [Tracepoint event]writeback:wbc_balance_dirty_start[Tracepoint event]writeback:wbc_balance_dirty_written[Tracepoint event]writeback:wbc_balance_dirty_wait [Tracepoint event]writeback:wbc_writepage[Tracepoint event]kmem:kmalloc [Tracepoint event]kmem:kmem_cache_alloc[Tracepoint event]kmem:kmalloc_node[Tracepoint event]kmem:kmem_cache_alloc_node [Tracepoint event]kmem:kfree [Tracepoint event]kmem:kmem_cache_free [Tracepoint event]kmem:mm_page_free_direct [Tracepoint event]kmem:mm_pagevec_free [Tracepoint event]kmem:mm_page_alloc [Tracepoint event]kmem:mm_page_alloc_zone_locked [Tracepoint event]kmem:mm_page_pcpu_drain[Tracepoint event]kmem:mm_page_alloc_extfrag [Tracepoint event]kmem:mm_anon_fault [Tracepoint event]kmem:mm_anon_pgin[Tracepoint event]kmem:mm_anon_cow [Tracepoint event]kmem:mm_anon_userfree[Tracepoint event]kmem:mm_anon_unmap [Tracepoint event]kmem:mm_filemap_fault[Tracepoint event]kmem:mm_filemap_cow[Tracepoint event]kmem:mm_filemap_unmap[Tracepoint event]kmem:mm_filemap_userunmap[Tracepoint event]kmem:mm_pagereclaim_pgout[Tracepoint event]kmem:mm_pagereclaim_free [Tracepoint event]kmem:mm_background_writeout[Tracepoint event]kmem:mm_olddata_writeout [Tracepoint event]kmem:mm_balancedirty_writeout[Tracepoint event]kmem:mm_kswapd_ran [Tracepoint event]kmem:mm_directreclaim_reclaimall [Tracepoint event]kmem:mm_directreclaim_reclaimzone[Tracepoint event]kmem:mm_pagereclaim_shrinkzone [Tracepoint event]kmem:mm_pagereclaim_shrinkactive [Tracepoint event]kmem:mm_pagereclaim_shrinkinactive [Tracepoint event]kmem:mm_kernel_pagefault [Tracepoint event]kmem:mm_vmscan_kswapd_sleep[Tracepoint event]kmem:mm_vmscan_kswapd_wake [Tracepoint event]kmem:mm_vmscan_wakeup_kswapd [Tracepoint event]kmem:mm_vmscan_direct_reclaim_begin[Tracepoint event]kmem:mm_vmscan_direct_reclaim_end[Tracepoint event]kmem:mm_vmscan_lru_isolate [Tracepoint event]kmem:mm_vmscan_writepage [Tracepoint event]power:power_start[Tracepoint event]power:power_frequency[Tracepoint event]power:power_end[Tracepoint event]power:pstate_sample[Tracepoint event]module:module_load [Tracepoint event]module:module_free [Tracepoint event]module:module_get[Tracepoint event]module:module_put[Tracepoint event]module:module_request[Tracepoint event]workqueue:workqueue_insertion[Tracepoint event]workqueue:workqueue_execution[Tracepoint event]workqueue:workqueue_creation [Tracepoint event]workqueue:workqueue_destruction[Tracepoint event]signal:signal_generate [Tracepoint event]signal:signal_deliver[Tracepoint event]timer:timer_init [Tracepoint event]timer:timer_start[Tracepoint event]timer:timer_expire_entry [Tracepoint event]timer:timer_expire_exit[Tracepoint event]timer:timer_cancel [Tracepoint event]timer:hrtimer_init [Tracepoint event]timer:hrtimer_start[Tracepoint event]timer:hrtimer_expire_entry [Tracepoint event]timer:hrtimer_expire_exit[Tracepoint event]timer:hrtimer_cancel [Tracepoint event]timer:itimer_state [Tracepoint event]timer:itimer_expire[Tracepoint event]irq:irq_handler_entry[Tracepoint event]irq:irq_handler_exit [Tracepoint event]irq:softirq_entry[Tracepoint event]irq:softirq_exit [Tracepoint event]irq:softirq_raise[Tracepoint event]sched:sched_kthread_stop [Tracepoint event]sched:sched_kthread_stop_ret [Tracepoint event]sched:sched_wait_task[Tracepoint event]sched:sched_wakeup [Tracepoint event]sched:sched_wakeup_new [Tracepoint event]sched:sched_switch [Tracepoint event]sched:sched_migrate_task [Tracepoint event]sched:sched_process_free [Tracepoint event]sched:sched_process_exit [Tracepoint event]sched:sched_process_wait [Tracepoint event]sched:sched_process_fork [Tracepoint event]sched:sched_stat_wait[Tracepoint event]sched:sched_stat_sleep [Tracepoint event]sched:sched_stat_iowait[Tracepoint event]sched:sched_stat_blocked [Tracepoint event]sched:sched_stat_runtime [Tracepoint event]mce:mce_record [Tracepoint event]syscalls:sys_enter_sendmmsg[Tracepoint event]syscalls:sys_exit_sendmmsg [Tracepoint event]syscalls:sys_enter_recvmmsg[Tracepoint event]syscalls:sys_exit_recvmmsg [Tracepoint event]syscalls:sys_enter_socketcall[Tracepoint event]syscalls:sys_exit_socketcall [Tracepoint event]syscalls:sys_enter_add_key [Tracepoint event]syscalls:sys_exit_add_key[Tracepoint event]syscalls:sys_enter_request_key [Tracepoint event]syscalls:sys_exit_request_key[Tracepoint event]syscalls:sys_enter_keyctl[Tracepoint event]syscalls:sys_exit_keyctl [Tracepoint event]syscalls:sys_enter_mq_open [Tracepoint event]syscalls:sys_exit_mq_open[Tracepoint event]syscalls:sys_enter_mq_unlink [Tracepoint event]syscalls:sys_exit_mq_unlink[Tracepoint event]syscalls:sys_enter_mq_timedsend[Tracepoint event]syscalls:sys_exit_mq_timedsend [Tracepoint event]syscalls:sys_enter_mq_timedreceive [Tracepoint event]syscalls:sys_exit_mq_timedreceive[Tracepoint event]syscalls:sys_enter_mq_notify [Tracepoint event]syscalls:sys_exit_mq_notify[Tracepoint event]syscalls:sys_enter_mq_getsetattr [Tracepoint event]syscalls:sys_exit_mq_getsetattr[Tracepoint event]syscalls:sys_enter_quotactl[Tracepoint event]syscalls:sys_exit_quotactl [Tracepoint event]syscalls:sys_enter_nfsservctl[Tracepoint event]syscalls:sys_exit_nfsservctl [Tracepoint event]syscalls:sys_enter_flock [Tracepoint event]syscalls:sys_exit_flock[Tracepoint event]syscalls:sys_enter_io_setup[Tracepoint event]syscalls:sys_exit_io_setup [Tracepoint event]syscalls:sys_enter_io_destroy[Tracepoint event]syscalls:sys_exit_io_destroy [Tracepoint event]syscalls:sys_enter_io_submit [Tracepoint event]syscalls:sys_exit_io_submit[Tracepoint event]syscalls:sys_enter_io_cancel [Tracepoint event]syscalls:sys_exit_io_cancel[Tracepoint event]syscalls:sys_enter_io_getevents[Tracepoint event]syscalls:sys_exit_io_getevents [Tracepoint event]syscalls:sys_enter_eventfd2[Tracepoint event]syscalls:sys_exit_eventfd2 [Tracepoint event]syscalls:sys_enter_eventfd [Tracepoint event]syscalls:sys_exit_eventfd[Tracepoint event]syscalls:sys_enter_timerfd_create[Tracepoint event]syscalls:sys_exit_timerfd_create [Tracepoint event]syscalls:sys_enter_timerfd_settime [Tracepoint event]syscalls:sys_exit_timerfd_settime[Tracepoint event]syscalls:sys_enter_timerfd_gettime [Tracepoint event]syscalls:sys_exit_timerfd_gettime[Tracepoint event]syscalls:sys_enter_signalfd4 [Tracepoint event]syscalls:sys_exit_signalfd4[Tracepoint event]syscalls:sys_enter_signalfd[Tracepoint event]syscalls:sys_exit_signalfd [Tracepoint event]syscalls:sys_enter_epoll_create1 [Tracepoint event]syscalls:sys_exit_epoll_create1[Tracepoint event]syscalls:sys_enter_epoll_create[Tracepoint event]syscalls:sys_exit_epoll_create [Tracepoint event]syscalls:sys_enter_epoll_ctl [Tracepoint event]syscalls:sys_exit_epoll_ctl[Tracepoint event]syscalls:sys_enter_epoll_wait[Tracepoint event]syscalls:sys_exit_epoll_wait [Tracepoint event]syscalls:sys_enter_epoll_pwait [Tracepoint event]syscalls:sys_exit_epoll_pwait[Tracepoint event]syscalls:sys_enter_inotify_init1 [Tracepoint event]syscalls:sys_exit_inotify_init1[Tracepoint event]syscalls:sys_enter_inotify_init[Tracepoint event]syscalls:sys_exit_inotify_init [Tracepoint event]syscalls:sys_enter_inotify_add_watch [Tracepoint event]syscalls:sys_exit_inotify_add_watch[Tracepoint event]syscalls:sys_enter_inotify_rm_watch[Tracepoint event]syscalls:sys_exit_inotify_rm_watch [Tracepoint event]syscalls:sys_enter_ioprio_set[Tracepoint event]syscalls:sys_exit_ioprio_set [Tracepoint event]syscalls:sys_enter_ioprio_get[Tracepoint event]syscalls:sys_exit_ioprio_get [Tracepoint event]syscalls:sys_enter_bdflush [Tracepoint event]syscalls:sys_exit_bdflush[Tracepoint event]syscalls:sys_enter_statfs[Tracepoint event]syscalls:sys_exit_statfs [Tracepoint event]syscalls:sys_enter_statfs64[Tracepoint event]syscalls:sys_exit_statfs64 [Tracepoint event]syscalls:sys_enter_fstatfs [Tracepoint event]syscalls:sys_exit_fstatfs[Tracepoint event]syscalls:sys_enter_fstatfs64 [Tracepoint event]syscalls:sys_exit_fstatfs64[Tracepoint event]syscalls:sys_enter_ustat [Tracepoint event]syscalls:sys_exit_ustat[Tracepoint event]syscalls:sys_enter_utime [Tracepoint event]syscalls:sys_exit_utime[Tracepoint event]syscalls:sys_enter_utimensat [Tracepoint event]syscalls:sys_exit_utimensat[Tracepoint event]syscalls:sys_enter_futimesat [Tracepoint event]syscalls:sys_exit_futimesat[Tracepoint event]syscalls:sys_enter_utimes[Tracepoint event]syscalls:sys_exit_utimes [Tracepoint event]syscalls:sys_enter_sync[Tracepoint event]syscalls:sys_exit_sync [Tracepoint event]syscalls:sys_enter_syncfs[Tracepoint event]syscalls:sys_exit_syncfs [Tracepoint event]syscalls:sys_enter_fsync [Tracepoint event]syscalls:sys_exit_fsync[Tracepoint event]syscalls:sys_enter_fdatasync [Tracepoint event]syscalls:sys_exit_fdatasync[Tracepoint event]syscalls:sys_enter_vmsplice[Tracepoint event]syscalls:sys_exit_vmsplice [Tracepoint event]syscalls:sys_enter_splice[Tracepoint event]syscalls:sys_exit_splice [Tracepoint event]syscalls:sys_enter_tee [Tracepoint event]syscalls:sys_exit_tee[Tracepoint event]syscalls:sys_enter_setxattr[Tracepoint event]syscalls:sys_exit_setxattr [Tracepoint event]syscalls:sys_enter_lsetxattr [Tracepoint event]syscalls:sys_exit_lsetxattr[Tracepoint event]syscalls:sys_enter_fsetxattr [Tracepoint event]syscalls:sys_exit_fsetxattr[Tracepoint event]syscalls:sys_enter_getxattr[Tracepoint event]syscalls:sys_exit_getxattr [Tracepoint event]syscalls:sys_enter_lgetxattr [Tracepoint event]syscalls:sys_exit_lgetxattr[Tracepoint event]syscalls:sys_enter_fgetxattr [Tracepoint event]syscalls:sys_exit_fgetxattr[Tracepoint event]syscalls:sys_enter_listxattr [Tracepoint event]syscalls:sys_exit_listxattr[Tracepoint event]syscalls:sys_enter_llistxattr[Tracepoint event]syscalls:sys_exit_llistxattr [Tracepoint event]syscalls:sys_enter_flistxattr[Tracepoint event]syscalls:sys_exit_flistxattr [Tracepoint event]syscalls:sys_enter_removexattr [Tracepoint event]syscalls:sys_exit_removexattr[Tracepoint event]syscalls:sys_enter_lremovexattr[Tracepoint event]syscalls:sys_exit_lremovexattr [Tracepoint event]syscalls:sys_enter_fremovexattr[Tracepoint event]syscalls:sys_exit_fremovexattr [Tracepoint event]syscalls:sys_enter_umount[Tracepoint event]syscalls:sys_exit_umount [Tracepoint event]syscalls:sys_enter_oldumount [Tracepoint event]syscalls:sys_exit_oldumount[Tracepoint event]syscalls:sys_enter_mount [Tracepoint event]syscalls:sys_exit_mount[Tracepoint event]syscalls:sys_enter_pivot_root[Tracepoint event]syscalls:sys_exit_pivot_root [Tracepoint event]syscalls:sys_enter_sysfs [Tracepoint event]syscalls:sys_exit_sysfs[Tracepoint event]syscalls:sys_enter_getcwd[Tracepoint event]syscalls:sys_exit_getcwd [Tracepoint event]syscalls:sys_enter_select[Tracepoint event]syscalls:sys_exit_select [Tracepoint event]syscalls:sys_enter_pselect6[Tracepoint event]syscalls:sys_exit_pselect6 [Tracepoint event]syscalls:sys_enter_poll[Tracepoint event]syscalls:sys_exit_poll [Tracepoint event]syscalls:sys_enter_ppoll [Tracepoint event]syscalls:sys_exit_ppoll[Tracepoint event]syscalls:sys_enter_old_readdir [Tracepoint event]syscalls:sys_exit_old_readdir[Tracepoint event]syscalls:sys_enter_getdents[Tracepoint event]syscalls:sys_exit_getdents [Tracepoint event]syscalls:sys_enter_getdents64[Tracepoint event]syscalls:sys_exit_getdents64 [Tracepoint event]syscalls:sys_enter_ioctl [Tracepoint event]syscalls:sys_exit_ioctl[Tracepoint event]syscalls:sys_enter_dup3[Tracepoint event]syscalls:sys_exit_dup3 [Tracepoint event]syscalls:sys_enter_dup2[Tracepoint event]syscalls:sys_exit_dup2 [Tracepoint event]syscalls:sys_enter_dup [Tracepoint event]syscalls:sys_exit_dup[Tracepoint event]syscalls:sys_enter_fcntl [Tracepoint event]syscalls:sys_exit_fcntl[Tracepoint event]syscalls:sys_enter_fcntl64 [Tracepoint event]syscalls:sys_exit_fcntl64[Tracepoint event]syscalls:sys_enter_mknodat [Tracepoint event]syscalls:sys_exit_mknodat[Tracepoint event]syscalls:sys_enter_mknod [Tracepoint event]syscalls:sys_exit_mknod[Tracepoint event]syscalls:sys_enter_mkdirat [Tracepoint event]syscalls:sys_exit_mkdirat[Tracepoint event]syscalls:sys_enter_mkdir [Tracepoint event]syscalls:sys_exit_mkdir[Tracepoint event]syscalls:sys_enter_rmdir [Tracepoint event]syscalls:sys_exit_rmdir[Tracepoint event]syscalls:sys_enter_unlinkat[Tracepoint event]syscalls:sys_exit_unlinkat [Tracepoint event]syscalls:sys_enter_unlink[Tracepoint event]syscalls:sys_exit_unlink [Tracepoint event]syscalls:sys_enter_symlinkat [Tracepoint event]syscalls:sys_exit_symlinkat[Tracepoint event]syscalls:sys_enter_symlink [Tracepoint event]syscalls:sys_exit_symlink[Tracepoint event]syscalls:sys_enter_linkat[Tracepoint event]syscalls:sys_exit_linkat [Tracepoint event]syscalls:sys_enter_link[Tracepoint event]syscalls:sys_exit_link [Tracepoint event]syscalls:sys_enter_renameat[Tracepoint event]syscalls:sys_exit_renameat [Tracepoint event]syscalls:sys_enter_rename[Tracepoint event]syscalls:sys_exit_rename [Tracepoint event]syscalls:sys_enter_pipe2 [Tracepoint event]syscalls:sys_exit_pipe2[Tracepoint event]syscalls:sys_enter_pipe[Tracepoint event]syscalls:sys_exit_pipe [Tracepoint event]syscalls:sys_enter_uselib[Tracepoint event]syscalls:sys_exit_uselib [Tracepoint event]syscalls:sys_enter_stat[Tracepoint event]syscalls:sys_exit_stat [Tracepoint event]syscalls:sys_enter_lstat [Tracepoint event]syscalls:sys_exit_lstat[Tracepoint event]syscalls:sys_enter_fstat [Tracepoint event]syscalls:sys_exit_fstat[Tracepoint event]syscalls:sys_enter_newstat [Tracepoint event]syscalls:sys_exit_newstat[Tracepoint event]syscalls:sys_enter_newlstat[Tracepoint event]syscalls:sys_exit_newlstat [Tracepoint event]syscalls:sys_enter_newfstat[Tracepoint event]syscalls:sys_exit_newfstat [Tracepoint event]syscalls:sys_enter_readlinkat[Tracepoint event]syscalls:sys_exit_readlinkat [Tracepoint event]syscalls:sys_enter_readlink[Tracepoint event]syscalls:sys_exit_readlink [Tracepoint event]syscalls:sys_enter_stat64[Tracepoint event]syscalls:sys_exit_stat64 [Tracepoint event]syscalls:sys_enter_lstat64 [Tracepoint event]syscalls:sys_exit_lstat64[Tracepoint event]syscalls:sys_enter_fstat64 [Tracepoint event]syscalls:sys_exit_fstat64[Tracepoint event]syscalls:sys_enter_fstatat64 [Tracepoint event]syscalls:sys_exit_fstatat64[Tracepoint event]syscalls:sys_enter_lseek [Tracepoint event]syscalls:sys_exit_lseek[Tracepoint event]syscalls:sys_enter_llseek[Tracepoint event]syscalls:sys_exit_llseek [Tracepoint event]syscalls:sys_enter_read[Tracepoint event]syscalls:sys_exit_read [Tracepoint event]syscalls:sys_enter_write [Tracepoint event]syscalls:sys_exit_write[Tracepoint event]syscalls:sys_enter_readv [Tracepoint event]syscalls:sys_exit_readv[Tracepoint event]syscalls:sys_enter_writev[Tracepoint event]syscalls:sys_exit_writev [Tracepoint event]syscalls:sys_enter_preadv[Tracepoint event]syscalls:sys_exit_preadv [Tracepoint event]syscalls:sys_enter_pwritev [Tracepoint event]syscalls:sys_exit_pwritev[Tracepoint event]syscalls:sys_enter_sendfile[Tracepoint event]syscalls:sys_exit_sendfile [Tracepoint event]syscalls:sys_enter_sendfile64[Tracepoint event]syscalls:sys_exit_sendfile64 [Tracepoint event]syscalls:sys_enter_truncate[Tracepoint event]syscalls:sys_exit_truncate [Tracepoint event]syscalls:sys_enter_ftruncate [Tracepoint event]syscalls:sys_exit_ftruncate[Tracepoint event]syscalls:sys_enter_faccessat [Tracepoint event]syscalls:sys_exit_faccessat[Tracepoint event]syscalls:sys_enter_access[Tracepoint event]syscalls:sys_exit_access [Tracepoint event]syscalls:sys_enter_chdir [Tracepoint event]syscalls:sys_exit_chdir[Tracepoint event]syscalls:sys_enter_fchdir[Tracepoint event]syscalls:sys_exit_fchdir [Tracepoint event]syscalls:sys_enter_chroot[Tracepoint event]syscalls:sys_exit_chroot [Tracepoint event]syscalls:sys_enter_fchmod[Tracepoint event]syscalls:sys_exit_fchmod [Tracepoint event]syscalls:sys_enter_fchmodat[Tracepoint event]syscalls:sys_exit_fchmodat [Tracepoint event]syscalls:sys_enter_chmod [Tracepoint event]syscalls:sys_exit_chmod[Tracepoint event]syscalls:sys_enter_fchownat[Tracepoint event]syscalls:sys_exit_fchownat [Tracepoint event]syscalls:sys_enter_chown [Tracepoint event]syscalls:sys_exit_chown[Tracepoint event]syscalls:sys_enter_lchown[Tracepoint event]syscalls:sys_exit_lchown [Tracepoint event]syscalls:sys_enter_fchown[Tracepoint event]syscalls:sys_exit_fchown [Tracepoint event]syscalls:sys_enter_open[Tracepoint event]syscalls:sys_exit_open [Tracepoint event]syscalls:sys_enter_openat[Tracepoint event]syscalls:sys_exit_openat [Tracepoint event]syscalls:sys_enter_creat [Tracepoint event]syscalls:sys_exit_creat[Tracepoint event]syscalls:sys_enter_close [Tracepoint event]syscalls:sys_exit_close[Tracepoint event]syscalls:sys_enter_vhangup [Tracepoint event]syscalls:sys_exit_vhangup[Tracepoint event]syscalls:sys_enter_swapoff [Tracepoint event]syscalls:sys_exit_swapoff[Tracepoint event]syscalls:sys_enter_swapon[Tracepoint event]syscalls:sys_exit_swapon [Tracepoint event]syscalls:sys_enter_process_vm_readv[Tracepoint event]syscalls:sys_exit_process_vm_readv [Tracepoint event]syscalls:sys_enter_process_vm_writev [Tracepoint event]syscalls:sys_exit_process_vm_writev[Tracepoint event]syscalls:sys_enter_msync [Tracepoint event]syscalls:sys_exit_msync[Tracepoint event]syscalls:sys_enter_mremap[Tracepoint event]syscalls:sys_exit_mremap [Tracepoint event]syscalls:sys_enter_mprotect[Tracepoint event]syscalls:sys_exit_mprotect [Tracepoint event]syscalls:sys_enter_brk [Tracepoint event]syscalls:sys_exit_brk[Tracepoint event]syscalls:sys_enter_munmap[Tracepoint event]syscalls:sys_exit_munmap [Tracepoint event]syscalls:sys_enter_mlock [Tracepoint event]syscalls:sys_exit_mlock[Tracepoint event]syscalls:sys_enter_munlock [Tracepoint event]syscalls:sys_exit_munlock[Tracepoint event]syscalls:sys_enter_mlockall[Tracepoint event]syscalls:sys_exit_mlockall [Tracepoint event]syscalls:sys_enter_munlockall[Tracepoint event]syscalls:sys_exit_munlockall [Tracepoint event]syscalls:sys_enter_mincore [Tracepoint event]syscalls:sys_exit_mincore[Tracepoint event]syscalls:sys_enter_madvise [Tracepoint event]syscalls:sys_exit_madvise[Tracepoint event]syscalls:sys_enter_remap_file_pages[Tracepoint event]syscalls:sys_exit_remap_file_pages [Tracepoint event]syscalls:sys_enter_mmap_pgoff[Tracepoint event]syscalls:sys_exit_mmap_pgoff [Tracepoint event]syscalls:sys_enter_perf_event_open [Tracepoint event]syscalls:sys_exit_perf_event_open[Tracepoint event]syscalls:sys_enter_kexec_load[Tracepoint event]syscalls:sys_exit_kexec_load [Tracepoint event]syscalls:sys_enter_acct[Tracepoint event]syscalls:sys_exit_acct [Tracepoint event]syscalls:sys_enter_delete_module [Tracepoint event]syscalls:sys_exit_delete_module[Tracepoint event]syscalls:sys_enter_init_module [Tracepoint event]syscalls:sys_exit_init_module[Tracepoint event]syscalls:sys_enter_chown16 [Tracepoint event]syscalls:sys_exit_chown16[Tracepoint event]syscalls:sys_enter_lchown16[Tracepoint event]syscalls:sys_exit_lchown16 [Tracepoint event]syscalls:sys_enter_fchown16[Tracepoint event]syscalls:sys_exit_fchown16 [Tracepoint event]syscalls:sys_enter_setregid16[Tracepoint event]syscalls:sys_exit_setregid16 [Tracepoint event]syscalls:sys_enter_setgid16[Tracepoint event]syscalls:sys_exit_setgid16 [Tracepoint event]syscalls:sys_enter_setreuid16[Tracepoint event]syscalls:sys_exit_setreuid16 [Tracepoint event]syscalls:sys_enter_setuid16[Tracepoint event]syscalls:sys_exit_setuid16 [Tracepoint event]syscalls:sys_enter_setresuid16 [Tracepoint event]syscalls:sys_exit_setresuid16[Tracepoint event]syscalls:sys_enter_getresuid16 [Tracepoint event]syscalls:sys_exit_getresuid16[Tracepoint event]syscalls:sys_enter_setresgid16 [Tracepoint event]syscalls:sys_exit_setresgid16[Tracepoint event]syscalls:sys_enter_getresgid16 [Tracepoint event]syscalls:sys_exit_getresgid16[Tracepoint event]syscalls:sys_enter_setfsuid16[Tracepoint event]syscalls:sys_exit_setfsuid16 [Tracepoint event]syscalls:sys_enter_setfsgid16[Tracepoint event]syscalls:sys_exit_setfsgid16 [Tracepoint event]syscalls:sys_enter_getgroups16 [Tracepoint event]syscalls:sys_exit_getgroups16[Tracepoint event]syscalls:sys_enter_setgroups16 [Tracepoint event]syscalls:sys_exit_setgroups16[Tracepoint event]syscalls:sys_enter_getuid16[Tracepoint event]syscalls:sys_exit_getuid16 [Tracepoint event]syscalls:sys_enter_geteuid16 [Tracepoint event]syscalls:sys_exit_geteuid16[Tracepoint event]syscalls:sys_enter_getgid16[Tracepoint event]syscalls:sys_exit_getgid16 [Tracepoint event]syscalls:sys_enter_getegid16 [Tracepoint event]syscalls:sys_exit_getegid16[Tracepoint event]syscalls:sys_enter_set_robust_list [Tracepoint event]syscalls:sys_exit_set_robust_list[Tracepoint event]syscalls:sys_enter_get_robust_list [Tracepoint event]syscalls:sys_exit_get_robust_list[Tracepoint event]syscalls:sys_enter_futex [Tracepoint event]syscalls:sys_exit_futex[Tracepoint event]syscalls:sys_enter_getgroups [Tracepoint event]syscalls:sys_exit_getgroups[Tracepoint event]syscalls:sys_enter_setgroups [Tracepoint event]syscalls:sys_exit_setgroups[Tracepoint event]syscalls:sys_enter_setns [Tracepoint event]syscalls:sys_exit_setns[Tracepoint event]syscalls:sys_enter_nanosleep [Tracepoint event]syscalls:sys_exit_nanosleep[Tracepoint event]syscalls:sys_enter_timer_create[Tracepoint event]syscalls:sys_exit_timer_create [Tracepoint event]syscalls:sys_enter_timer_gettime [Tracepoint event]syscalls:sys_exit_timer_gettime[Tracepoint event]syscalls:sys_enter_timer_getoverrun[Tracepoint event]syscalls:sys_exit_timer_getoverrun [Tracepoint event]syscalls:sys_enter_timer_settime [Tracepoint event]syscalls:sys_exit_timer_settime[Tracepoint event]syscalls:sys_enter_timer_delete[Tracepoint event]syscalls:sys_exit_timer_delete [Tracepoint event]syscalls:sys_enter_clock_settime [Tracepoint event]syscalls:sys_exit_clock_settime[Tracepoint event]syscalls:sys_enter_clock_gettime [Tracepoint event]syscalls:sys_exit_clock_gettime[Tracepoint event]syscalls:sys_enter_clock_adjtime [Tracepoint event]syscalls:sys_exit_clock_adjtime[Tracepoint event]syscalls:sys_enter_clock_getres[Tracepoint event]syscalls:sys_exit_clock_getres [Tracepoint event]syscalls:sys_enter_clock_nanosleep [Tracepoint event]syscalls:sys_exit_clock_nanosleep[Tracepoint event]syscalls:sys_enter_setpriority [Tracepoint event]syscalls:sys_exit_setpriority[Tracepoint event]syscalls:sys_enter_getpriority [Tracepoint event]syscalls:sys_exit_getpriority[Tracepoint event]syscalls:sys_enter_reboot[Tracepoint event]syscalls:sys_exit_reboot [Tracepoint event]syscalls:sys_enter_setregid[Tracepoint event]syscalls:sys_exit_setregid [Tracepoint event]syscalls:sys_enter_setgid[Tracepoint event]syscalls:sys_exit_setgid [Tracepoint event]syscalls:sys_enter_setreuid[Tracepoint event]syscalls:sys_exit_setreuid [Tracepoint event]syscalls:sys_enter_setuid[Tracepoint event]syscalls:sys_exit_setuid [Tracepoint event]syscalls:sys_enter_setresuid [Tracepoint event]syscalls:sys_exit_setresuid[Tracepoint event]syscalls:sys_enter_getresuid [Tracepoint event]syscalls:sys_exit_getresuid[Tracepoint event]syscalls:sys_enter_setresgid [Tracepoint event]syscalls:sys_exit_setresgid[Tracepoint event]syscalls:sys_enter_getresgid [Tracepoint event]syscalls:sys_exit_getresgid[Tracepoint event]syscalls:sys_enter_setfsuid[Tracepoint event]syscalls:sys_exit_setfsuid [Tracepoint event]syscalls:sys_enter_setfsgid[Tracepoint event]syscalls:sys_exit_setfsgid [Tracepoint event]syscalls:sys_enter_times [Tracepoint event]syscalls:sys_exit_times[Tracepoint event]syscalls:sys_enter_setpgid [Tracepoint event]syscalls:sys_exit_setpgid[Tracepoint event]syscalls:sys_enter_getpgid [Tracepoint event]syscalls:sys_exit_getpgid[Tracepoint event]syscalls:sys_enter_getpgrp [Tracepoint event]syscalls:sys_exit_getpgrp[Tracepoint event]syscalls:sys_enter_getsid[Tracepoint event]syscalls:sys_exit_getsid [Tracepoint event]syscalls:sys_enter_setsid[Tracepoint event]syscalls:sys_exit_setsid [Tracepoint event]syscalls:sys_enter_newuname[Tracepoint event]syscalls:sys_exit_newuname [Tracepoint event]syscalls:sys_enter_sethostname [Tracepoint event]syscalls:sys_exit_sethostname[Tracepoint event]syscalls:sys_enter_setdomainname [Tracepoint event]syscalls:sys_exit_setdomainname[Tracepoint event]syscalls:sys_enter_getrlimit [Tracepoint event]syscalls:sys_exit_getrlimit[Tracepoint event]syscalls:sys_enter_old_getrlimit [Tracepoint event]syscalls:sys_exit_old_getrlimit[Tracepoint event]syscalls:sys_enter_setrlimit [Tracepoint event]syscalls:sys_exit_setrlimit[Tracepoint event]syscalls:sys_enter_getrusage [Tracepoint event]syscalls:sys_exit_getrusage[Tracepoint event]syscalls:sys_enter_umask [Tracepoint event]syscalls:sys_exit_umask[Tracepoint event]syscalls:sys_enter_prctl [Tracepoint event]syscalls:sys_exit_prctl[Tracepoint event]syscalls:sys_enter_getcpu[Tracepoint event]syscalls:sys_exit_getcpu [Tracepoint event]syscalls:sys_enter_restart_syscall [Tracepoint event]syscalls:sys_exit_restart_syscall[Tracepoint event]syscalls:sys_enter_rt_sigprocmask[Tracepoint event]syscalls:sys_exit_rt_sigprocmask [Tracepoint event]syscalls:sys_enter_rt_sigpending [Tracepoint event]syscalls:sys_exit_rt_sigpending[Tracepoint event]syscalls:sys_enter_rt_sigtimedwait [Tracepoint event]syscalls:sys_exit_rt_sigtimedwait[Tracepoint event]syscalls:sys_enter_kill[Tracepoint event]syscalls:sys_exit_kill [Tracepoint event]syscalls:sys_enter_tgkill[Tracepoint event]syscalls:sys_exit_tgkill [Tracepoint event]syscalls:sys_enter_tkill [Tracepoint event]syscalls:sys_exit_tkill[Tracepoint event]syscalls:sys_enter_rt_sigqueueinfo [Tracepoint event]syscalls:sys_exit_rt_sigqueueinfo[Tracepoint event]syscalls:sys_enter_rt_tgsigqueueinfo [Tracepoint event]syscalls:sys_exit_rt_tgsigqueueinfo[Tracepoint event]syscalls:sys_enter_sigpending[Tracepoint event]syscalls:sys_exit_sigpending [Tracepoint event]syscalls:sys_enter_sigprocmask [Tracepoint event]syscalls:sys_exit_sigprocmask[Tracepoint event]syscalls:sys_enter_rt_sigaction[Tracepoint event]syscalls:sys_exit_rt_sigaction [Tracepoint event]syscalls:sys_enter_sgetmask[Tracepoint event]syscalls:sys_exit_sgetmask [Tracepoint event]syscalls:sys_enter_ssetmask[Tracepoint event]syscalls:sys_exit_ssetmask [Tracepoint event]syscalls:sys_enter_signal[Tracepoint event]syscalls:sys_exit_signal [Tracepoint event]syscalls:sys_enter_pause [Tracepoint event]syscalls:sys_exit_pause[Tracepoint event]syscalls:sys_enter_rt_sigsuspend [Tracepoint event]syscalls:sys_exit_rt_sigsuspend[Tracepoint event]syscalls:sys_enter_alarm [Tracepoint event]syscalls:sys_exit_alarm[Tracepoint event]syscalls:sys_enter_getpid[Tracepoint event]syscalls:sys_exit_getpid [Tracepoint event]syscalls:sys_enter_getppid [Tracepoint event]syscalls:sys_exit_getppid[Tracepoint event]syscalls:sys_enter_getuid[Tracepoint event]syscalls:sys_exit_getuid [Tracepoint event]syscalls:sys_enter_geteuid [Tracepoint event]syscalls:sys_exit_geteuid[Tracepoint event]syscalls:sys_enter_getgid[Tracepoint event]syscalls:sys_exit_getgid [Tracepoint event]syscalls:sys_enter_getegid [Tracepoint event]syscalls:sys_exit_getegid[Tracepoint event]syscalls:sys_enter_gettid[Tracepoint event]syscalls:sys_exit_gettid [Tracepoint event]syscalls:sys_enter_sysinfo [Tracepoint event]syscalls:sys_exit_sysinfo[Tracepoint event]syscalls:sys_enter_ptrace[Tracepoint event]syscalls:sys_exit_ptrace [Tracepoint event]syscalls:sys_enter_capget[Tracepoint event]syscalls:sys_exit_capget [Tracepoint event]syscalls:sys_enter_capset[Tracepoint event]syscalls:sys_exit_capset [Tracepoint event]syscalls:sys_enter_sysctl[Tracepoint event]syscalls:sys_exit_sysctl [Tracepoint event]syscalls:sys_enter_time[Tracepoint event]syscalls:sys_exit_time [Tracepoint event]syscalls:sys_enter_stime [Tracepoint event]syscalls:sys_exit_stime[Tracepoint event]syscalls:sys_enter_gettimeofday[Tracepoint event]syscalls:sys_exit_gettimeofday [Tracepoint event]syscalls:sys_enter_settimeofday[Tracepoint event]syscalls:sys_exit_settimeofday [Tracepoint event]syscalls:sys_enter_adjtimex[Tracepoint event]syscalls:sys_exit_adjtimex [Tracepoint event]syscalls:sys_enter_getitimer [Tracepoint event]syscalls:sys_exit_getitimer[Tracepoint event]syscalls:sys_enter_setitimer [Tracepoint event]syscalls:sys_exit_setitimer[Tracepoint event]syscalls:sys_enter_exit[Tracepoint event]syscalls:sys_exit_exit [Tracepoint event]syscalls:sys_enter_exit_group[Tracepoint event]syscalls:sys_exit_exit_group [Tracepoint event]syscalls:sys_enter_waitid[Tracepoint event]syscalls:sys_exit_waitid [Tracepoint event]syscalls:sys_enter_wait4 [Tracepoint event]syscalls:sys_exit_wait4[Tracepoint event]syscalls:sys_enter_waitpid [Tracepoint event]syscalls:sys_exit_waitpid[Tracepoint event]syscalls:sys_enter_syslog[Tracepoint event]syscalls:sys_exit_syslog [Tracepoint event]syscalls:sys_enter_personality [Tracepoint event]syscalls:sys_exit_personality[Tracepoint event]syscalls:sys_enter_set_tid_address [Tracepoint event]syscalls:sys_exit_set_tid_address[Tracepoint event]syscalls:sys_enter_unshare [Tracepoint event]syscalls:sys_exit_unshare[Tracepoint event]syscalls:sys_enter_nice[Tracepoint event]syscalls:sys_exit_nice [Tracepoint event]syscalls:sys_enter_sched_setscheduler[Tracepoint event]syscalls:sys_exit_sched_setscheduler [Tracepoint event]syscalls:sys_enter_sched_setparam[Tracepoint event]syscalls:sys_exit_sched_setparam [Tracepoint event]syscalls:sys_enter_sched_getscheduler[Tracepoint event]syscalls:sys_exit_sched_getscheduler [Tracepoint event]syscalls:sys_enter_sched_getparam[Tracepoint event]syscalls:sys_exit_sched_getparam [Tracepoint event]syscalls:sys_enter_sched_setaffinity [Tracepoint event]syscalls:sys_exit_sched_setaffinity[Tracepoint event]syscalls:sys_enter_sched_getaffinity [Tracepoint event]syscalls:sys_exit_sched_getaffinity[Tracepoint event]syscalls:sys_enter_sched_yield [Tracepoint event]syscalls:sys_exit_sched_yield[Tracepoint event]syscalls:sys_enter_sched_get_priority_max[Tracepoint event]syscalls:sys_exit_sched_get_priority_max [Tracepoint event]syscalls:sys_enter_sched_get_priority_min[Tracepoint event]syscalls:sys_exit_sched_get_priority_min [Tracepoint event]syscalls:sys_enter_sched_rr_get_interval [Tracepoint event]syscalls:sys_exit_sched_rr_get_interval[Tracepoint event]syscalls:sys_enter [Tracepoint event]syscalls:sys_exit[Tracepoint event]irq_vectors:local_timer_entry[Tracepoint event]irq_vectors:local_timer_exit [Tracepoint event]irq_vectors:reschedule_entry [Tracepoint event]irq_vectors:reschedule_exit[Tracepoint event]irq_vectors:spurious_apic_entry[Tracepoint event]irq_vectors:spurious_apic_exit [Tracepoint event]irq_vectors:error_apic_entry [Tracepoint event]irq_vectors:error_apic_exit[Tracepoint event]irq_vectors:x86_platform_ipi_entry [Tracepoint event]irq_vectors:x86_platform_ipi_exit[Tracepoint event]irq_vectors:irq_work_entry [Tracepoint event]irq_vectors:irq_work_exit[Tracepoint event]irq_vectors:call_function_entry[Tracepoint event]irq_vectors:call_function_exit [Tracepoint event]irq_vectors:call_function_single_entry [Tracepoint event]irq_vectors:call_function_single_exit[Tracepoint event]irq_vectors:threshold_apic_entry [Tracepoint event]irq_vectors:threshold_apic_exit[Tracepoint event]irq_vectors:thermal_apic_entry [Tracepoint event]irq_vectors:thermal_apic_exit[Tracepoint event]tracepoint分成了几大类：ext4 文件系统的tracepoint events，如果是其它文件系统，比如XFS，也有对应的tracepoint event;jbd2 文件日志的tracepoint events;skb 内存的tracepoint events;net,napi,sock,udp:网络的tracepoint events;scsi, block, writeback 磁盘IOkmem 内存sched 调度syscalls 系统调用...3. perf top -e xxx上面的 perf list [hw|sw...] 可以知道所有的 tracepoint events, 接下来我们就可以使用 perf top -e tracepoint-event 来专门获得指定的tracepoint的信息：1）perf top -e cpu-clock: 查看CPU的使用2）perf top -e faults : 查看 page faults3）perf top -e block:block_rq_issue : 查看系统IO的请求，比如可以在发现系统IO异常时，可以使用该命令进行调查，就能指定到底是什么原因导致的IO异常。 block_rq_issue 表示 block_request_issue 就是IO请求数。其实从这些可以看出，分析和调查Linux上的各种性能问题，需要我们对Linux内核有比较多的了解，不然恐怕是无从下手的。本文永久更新链接地址