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Message-ID: <20090225222543.GC5757@movementarian.org> Date: Wed, 25 Feb 2009 17:25:43 -0500 From: wli@...ementarian.org To: linux-kernel@...r.kernel.org Subject: latencytop traces I ran into a nasty one. Here it is. -- wli LatencyTOP version 0.4 (C) 2008 Intel Corporation Cause Maximum Percentage xlog_state_get_iclog_space xlog_write xfs_log_writ1011.4 msec 8.4 % sync_page __lock_page find_lock_page filemap_fault740.3 msec 30.6 % down xfs_buf_lock xfs_getsb xfs_trans_getsb xfs_tr676.8 msec 8.8 % xlog_state_get_iclog_space xlog_write xfs_log_writ527.5 msec 2.6 % down xfs_buf_lock _xfs_buf_find xfs_buf_get_flags 326.0 msec 0.7 % xlog_state_get_iclog_space xlog_write xfs_log_writ158.6 msec 0.3 % xlog_state_get_iclog_space xlog_write xfs_log_writ 70.0 msec 0.2 % down xfs_buf_lock xfs_getsb xfs_trans_getsb xfs_tr 60.4 msec 0.2 % Scheduler: waiting for cpu_create xfs_vn_mknod xfs 57.2 msec 18.2 % Process git (26894) Total: 1212.9 msec sync_page __lock_page find_lock_page filemap_fault 57.7 msec 40.0 %lt do Scheduler: waiting for cpu 57.2 msec 60.0 % zsh zsh gnome-volume-co gconfd-2 smplayer zsh evince pdflush view git LatencyTOP version 0.4 (C) 2008 Intel Corporation Cause Maximum Percentage sync_page __lock_page find_lock_page filemap_fault1228.0 msec 5.3 % sync_page sync_page_killable __lock_page_killable 1200.0 msec 36.5 % xlog_state_get_iclog_space xlog_write xfs_log_writ172.6 msec 3.8 % xfs_ilock xfs_iomap __xfs_get_blocks xfs_get_block117.4 msec 0.3 % do_fork sys_vfork syscall_call generic_file_buffer 43.5 msec 0.1 % Scheduler: waiting for cpuwrite 40.0 msec 16.7 % xfs_buf_iowait _xfs_buf_read xfs_buf_read_flags xf 37.0 msec 2.2 % down xfs_buf_lock _xfs_buf_find xfs_buf_get_flags 21.4 msec 0.1 % xfs_buf_iowait _xfs_buf_read xfs_buf_read_flags xf 15.8 msec 0.0 % Process make (4903) Total: 1711.2 msec sync_page __lock_page find_lock_page filemap_fault968.3 msec 56.6 %lt do sync_page sync_page_killable __lock_page_killable 170.3 msec 17.9 %_read Scheduler: waiting for cpu_read vfs_read sys_read 31.8 msec 21.8 % xfs_buf_iowait _xfs_buf_read xfs_buf_read_flags xf 15.1 msec 3.6 %_to_b pipe_wait pipe_read do_sync_read vfs_read sys_read 0.4 msec 0.0 %th_wa lk vmstat python zsh top zsh zsh gnome-volume-co gconfd-2 smplayer make -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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