For people who is dying to see some q-tool profile, here is one. It's not a vanilla 2.6.9 kernel, but with patches in raw device to get around the DIO performance problem.
- Ken Flat profile of CPU_CYCLES in hist#0: Each histogram sample counts as 255.337u seconds % time self cumul calls self/call tot/call name 5.08 1.92 1.92 - - - schedule 4.64 0.62 2.54 - - - __ia64_readw_relaxed 4.03 0.54 3.08 - - - _stext 3.03 0.41 3.49 - - - qla2x00_queuecommand 2.73 0.37 3.86 - - - qla2x00_start_scsi 1.92 0.26 4.12 - - - __mod_timer 1.78 0.24 4.36 - - - scsi_request_fn 1.68 0.23 4.58 - - - __copy_user 1.45 0.20 4.78 - - - raw_file_rw 1.30 0.17 4.95 - - - kmem_cache_alloc 1.29 0.17 5.12 - - - mempool_alloc 1.29 0.17 5.30 - - - follow_hugetlb_page 1.19 0.16 5.46 - - - generic_make_request 1.14 0.15 5.61 - - - qla2x00_next 1.06 0.14 5.75 - - - memset 1.03 0.14 5.89 - - - raw_file_aio_rw 1.01 0.14 6.03 - - - e1000_clean 0.93 0.13 6.15 - - - scsi_get_command 0.93 0.12 6.28 - - - sd_init_command 0.87 0.12 6.39 - - - __make_request 0.87 0.12 6.51 - - - __aio_get_req 0.81 0.11 6.62 - - - qla2300_intr_handler 0.77 0.10 6.72 - - - put_io_context 0.75 0.10 6.82 - - - qla2x00_process_completed_request 0.74 0.10 6.92 - - - e1000_intr 0.73 0.10 7.02 - - - get_request 0.72 0.10 7.12 - - - rse_clear_invalid 0.70 0.09 7.21 - - - aio_read_evt 0.70 0.09 7.31 - - - e1000_xmit_frame 0.70 0.09 7.40 - - - __bio_add_page 0.69 0.09 7.49 - - - qla2x00_process_response_queue 0.69 0.09 7.58 - - - vfs_read 0.69 0.09 7.68 - - - break_fault 0.67 0.09 7.77 - - - scsi_dispatch_cmd 0.66 0.09 7.86 - - - try_to_wake_up 0.64 0.09 7.94 - - - blk_queue_start_tag 0.63 0.08 8.03 - - - sys_pread64 0.62 0.08 8.11 - - - alt_dtlb_miss 0.60 0.08 8.19 - - - ia64_spinlock_contention 0.57 0.08 8.27 - - - skb_release_data 0.55 0.07 8.34 - - - scsi_prep_fn 0.53 0.07 8.41 - - - tcp_sendmsg 0.52 0.07 8.48 - - - internal_add_timer 0.51 0.07 8.55 - - - drive_stat_acct 0.51 0.07 8.62 - - - tcp_transmit_skb 0.50 0.07 8.69 - - - task_rq_lock 0.49 0.07 8.75 - - - get_user_pages 0.48 0.06 8.82 - - - tcp_rcv_established 0.47 0.06 8.88 - - - kmem_cache_free 0.47 0.06 8.94 - - - save_switch_stack 0.46 0.06 9.00 - - - del_timer 0.46 0.06 9.07 - - - aio_pread 0.45 0.06 9.13 - - - bio_alloc 0.44 0.06 9.19 - - - finish_task_switch 0.44 0.06 9.25 - - - ip_queue_xmit 0.43 0.06 9.30 - - - move_tasks 0.42 0.06 9.36 - - - lock_sock 0.40 0.05 9.41 - - - elv_queue_empty 0.40 0.05 9.47 - - - bio_add_page 0.39 0.05 9.52 - - - try_atomic_semop 0.38 0.05 9.57 - - - qla2x00_done 0.38 0.05 9.62 - - - tcp_recvmsg 0.37 0.05 9.67 - - - put_page 0.37 0.05 9.72 - - - elv_next_request 0.36 0.05 9.77 - - - mod_timer 0.36 0.05 9.82 - - - load_switch_stack 0.36 0.05 9.86 - - - interrupt 0.36 0.05 9.91 - - - kref_get 0.36 0.05 9.96 - - - fget 0.35 0.05 10.01 - - - sk_wait_data 0.35 0.05 10.05 - - - do_IRQ 0.34 0.05 10.10 - - - e1000_clean_rx_irq 0.34 0.05 10.15 - - - find_vma 0.34 0.05 10.19 - - - ia64_leave_syscall 0.33 0.04 10.24 - - - tcp_ack 0.33 0.04 10.28 - - - fget_light 0.33 0.04 10.32 - - - swiotlb_map_sg 0.33 0.04 10.37 - - - blk_plug_device 0.32 0.04 10.41 - - - tcp_current_mss 0.31 0.04 10.45 - - - dev_queue_xmit 0.31 0.04 10.50 - - - __aio_run_iocbs 0.31 0.04 10.54 - - - ia64_handle_irq 0.31 0.04 10.58 - - - tcp_prequeue_process 0.30 0.04 10.62 - - - kfree 0.29 0.04 10.66 - - - submit_bio 0.29 0.04 10.70 - - - kref_put 0.29 0.04 10.74 - - - blk_queue_end_tag 0.29 0.04 10.77 - - - dequeue_task 0.28 0.04 10.81 - - - sys_semtimedop 0.28 0.04 10.85 - - - mempool_free 0.28 0.04 10.89 - - - __end_that_request_first 0.28 0.04 10.93 - - - qdisc_restart 0.28 0.04 10.96 - - - __aio_put_req 0.27 0.04 11.00 - - - sys_write 0.27 0.04 11.03 - - - schedule_timeout 0.26 0.04 11.07 - - - __umoddi3 0.25 0.03 11.10 - - - sched_clock 0.25 0.03 11.14 - - - add_wait_queue_exclusive 0.25 0.03 11.17 - - - blk_recount_segments 0.25 0.03 11.20 - - - aio_complete 0.24 0.03 11.24 - - - vfs_write 0.24 0.03 11.27 - - - remove_wait_queue 0.24 0.03 11.30 - - - __kfree_skb 0.24 0.03 11.33 - - - __elv_add_request 0.23 0.03 11.36 - - - enqueue_task 0.23 0.03 11.39 - - - ip_finish_output2 0.22 0.03 11.42 - - - io_submit_one 0.22 0.03 11.45 - - - tcp_v4_rcv 0.22 0.03 11.48 - - - bio_put 0.21 0.03 11.51 - - - elv_set_request 0.21 0.03 11.54 - - - inet_sendmsg 0.20 0.03 11.57 - - - rebalance_tick 0.20 0.03 11.59 - - - scsi_device_unbusy 0.20 0.03 11.62 - - - sys_io_getevents 0.20 0.03 11.65 - - - local_bh_enable 0.19 0.03 11.67 - - - __do_softirq 0.19 0.03 11.70 - - - ia64_switch_to 0.19 0.03 11.72 - - - update_process_times 0.19 0.03 11.75 - - - end_that_request_last 0.19 0.02 11.77 - - - memmove 0.19 0.02 11.80 - - - eth_type_trans 0.18 0.02 11.82 - - - generic_unplug_device 0.18 0.02 11.85 - - - huge_pte_offset 0.18 0.02 11.87 - - - scheduler_tick 0.17 0.02 11.90 - - - blk_queue_bounce 0.17 0.02 11.92 - - - mempool_alloc_slab 0.17 0.02 11.94 - - - scsi_finish_command 0.17 0.02 11.96 - - - blk_backing_dev_unplug 0.17 0.02 11.99 - - - qla2x00_build_scsi_iocbs_64 0.17 0.02 12.01 - - - blk_rq_map_sg 0.16 0.02 12.03 - - - swiotlb_unmap_sg 0.16 0.02 12.05 - - - sock_aio_write 0.16 0.02 12.07 - - - aio_setup_iocb 0.16 0.02 12.10 - - - blk_remove_plug 0.16 0.02 12.12 - - - ipc_lock 0.16 0.02 12.14 - - - __wake_up 0.15 0.02 12.16 - - - scsi_put_command 0.15 0.02 12.18 - - - scsi_end_request 0.15 0.02 12.20 - - - alloc_skb 0.15 0.02 12.22 - - - raw_end_aio 0.14 0.02 12.24 - - - cache_alloc_refill 0.14 0.02 12.26 - - - clear_queue_congested 0.14 0.02 12.27 - - - ia64_save_extra 0.14 0.02 12.29 - - - tcp_rtt_estimator 0.13 0.02 12.31 - - - ia64_leave_kernel 0.13 0.02 12.33 - - - ia64_syscall_setup 0.13 0.02 12.35 - - - tcp_write_xmit 0.13 0.02 12.36 - - - recalc_task_prio 0.13 0.02 12.38 - - - __tcp_v4_lookup_established 0.13 0.02 12.40 - - - scsi_io_completion 0.13 0.02 12.42 - - - sys_io_submit 0.12 0.02 12.43 - - - elv_merge 0.12 0.02 12.45 - - - skb_clone 0.12 0.02 12.47 - - - __kmalloc 0.12 0.02 12.48 - - - swiotlb_map_single 0.12 0.02 12.50 - - - __udivdi3 0.12 0.02 12.51 - - - get_io_context 0.12 0.02 12.53 - - - elevator_noop_merge 0.12 0.02 12.54 - - - __wake_up_common 0.12 0.02 12.56 - - - lookup_ioctx 0.11 0.02 12.58 - - - io_schedule 0.11 0.02 12.59 - - - net_rx_action 0.11 0.01 12.61 - - - disk_round_stats 0.11 0.01 12.62 - - - __generic_unplug_device 0.11 0.01 12.63 - - - tcp_event_data_recv 0.11 0.01 12.65 - - - __scsi_done 0.10 0.01 12.66 - - - dnotify_parent 0.10 0.01 12.68 - - - timer_interrupt 0.10 0.01 12.69 - - - ip_route_input 0.10 0.01 12.70 - - - sock_wfree 0.10 0.01 12.72 - - - add_timer_randomness 0.09 0.01 12.73 - - - run_timer_softirq 0.09 0.01 12.74 - - - sock_aio_read 0.09 0.01 12.75 - - - e1000_alloc_rx_buffers 0.09 0.01 12.77 - - - release_sock 0.09 0.01 12.78 - - - handle_IRQ_event 0.09 0.01 12.79 - - - pfifo_fast_enqueue 0.09 0.01 12.80 - - - ia64_load_extra 0.09 0.01 12.82 - - - finish_wait 0.08 0.01 12.83 - - - qla2x00_calc_iocbs_64 0.08 0.01 12.84 - - - find_busiest_group 0.08 0.01 12.85 - - - elevator_noop_next_request 0.08 0.01 12.86 - - - netif_receive_skb 0.08 0.01 12.87 - - - bio_destructor 0.08 0.01 12.88 - - - scsi_run_queue 0.08 0.01 12.89 - - - ip_output 0.07 0.01 12.90 - - - aio_pwrite 0.07 0.01 12.91 - - - ia64_ret_from_syscall 0.07 0.01 12.92 - - - add_disk_randomness 0.07 0.01 12.93 - - - scsi_decide_disposition 0.07 0.01 12.94 - - - do_sync_read 0.07 0.01 12.95 - - - bio_check_pages_dirty 0.07 0.01 12.96 - - - add_interrupt_randomness 0.06 0.01 12.97 - - - kobject_get 0.06 0.01 12.97 - - - sock_common_recvmsg 0.06 0.01 12.98 - - - get_device 0.06 0.01 12.99 - - - scsi_softirq 0.06 0.01 13.00 - - - aio_put_req 0.06 0.01 13.01 - - - freed_request 0.06 0.01 13.01 - - - scsi_add_timer 0.06 0.01 13.02 - - - elv_completed_request 0.06 0.01 13.03 - - - ip_rcv 0.06 0.01 13.04 - - - skb_copy_datagram_iovec 0.06 0.01 13.05 - - - iosapic_end_level_irq 0.06 0.01 13.05 - - - __tcp_select_window 0.06 0.01 13.06 - - - kobject_put 0.06 0.01 13.07 - - - activate_task 0.05 0.01 13.08 - - - sys_read 0.05 0.01 13.08 - - - elevator_noop_add_request 0.05 0.01 13.09 - - - elv_try_last_merge 0.05 0.01 13.10 - - - pfm_syst_wide_update_task 0.05 0.01 13.10 - - - elv_remove_request 0.05 0.01 13.11 - - - do_sync_write 0.05 0.01 13.12 - - - raw_file_aio_write 0.05 0.01 13.12 - - - tcp_v4_do_rcv 0.05 0.01 13.13 - - - __ia64_irq_desc 0.05 0.01 13.13 - - - prepare_to_wait 0.04 0.01 13.14 - - - ip_local_deliver_finish 0.04 0.01 13.15 - - - resched_task 0.04 0.01 13.15 - - - qla2x00_timer 0.04 0.01 13.16 - - - cleanup_rbuf 0.04 0.01 13.16 - - - memcpy_toiovec 0.04 0.01 13.17 - - - tcp_rcv_space_adjust 0.04 0.01 13.17 - - - cache_flusharray 0.04 0.01 13.18 - - - bio_phys_segments 0.04 0.01 13.18 - - - rbs_switch 0.04 0.01 13.19 - - - mempool_free_slab 0.04 0.01 13.20 - - - sys_semctl 0.04 0.01 13.20 - - - pfifo_fast_dequeue 0.04 0.01 13.21 - - - bio_endio 0.04 0.01 13.21 - - - ipcperms 0.04 0.01 13.22 - - - memcpy 0.04 0.01 13.22 - - - deactivate_task 0.04 0.00 13.23 - - - blk_run_queue 0.04 0.00 13.23 - - - find_extend_vma 0.04 0.00 13.24 - - - bio_set_pages_dirty 0.04 0.00 13.24 - - - raw_file_read 0.04 0.00 13.25 - - - tcp_send_delayed_ack 0.04 0.00 13.25 - - - swiotlb_unmap_single 0.03 0.00 13.26 - - - sk_reset_timer 0.03 0.00 13.26 - - - update_queue 0.03 0.00 13.26 - - - do_softirq 0.03 0.00 13.27 - - - __blk_put_request 0.03 0.00 13.27 - - - qla2x00_async_event 0.03 0.00 13.28 - - - __ia64_readl 0.03 0.00 13.28 - - - qla2x00_get_new_sp 0.03 0.00 13.29 - - - tcp_v4_send_check 0.03 0.00 13.29 - - - sd_rw_intr 0.03 0.00 13.29 - - - move_irq 0.03 0.00 13.30 - - - put_device 0.03 0.00 13.30 - - - raw_file_aio_read 0.03 0.00 13.30 - - - mark_clean 0.03 0.00 13.31 - - - time_interpolator_update 0.02 0.00 13.31 - - - ip_rcv_finish 0.02 0.00 13.31 - - - bio_hw_segments 0.02 0.00 13.32 - - - e1000_irq_enable 0.02 0.00 13.32 - - - fw2300ipx_version 0.02 0.00 13.32 - - - end_that_request_chunk 0.02 0.00 13.33 - - - find_vma_prev 0.02 0.00 13.33 - - - scsi_free_sgtable 0.02 0.00 13.33 - - - tcp_delack_timer 0.02 0.00 13.34 - - - ip_fast_csum 0.02 0.00 13.34 - - - __find_next_bit 0.02 0.00 13.34 - - - profile_tick 0.02 0.00 13.34 - - - ip_finish_output 0.02 0.00 13.35 - - - del_singleshot_timer_sync 0.02 0.00 13.35 - - - do_timer 0.02 0.00 13.35 - - - csum_tcpudp_magic 0.02 0.00 13.35 - - - autoremove_wake_function 0.02 0.00 13.36 - - - default_wake_function 0.02 0.00 13.36 - - - __sk_stream_mem_reclaim 0.02 0.00 13.36 - - - tcp_ack_saw_tstamp 0.02 0.00 13.36 - - - page_waitqueue 0.02 0.00 13.37 - - - ia64_pfn_valid 0.02 0.00 13.37 - - - elv_put_request 0.02 0.00 13.37 - - - tcp_set_skb_tso_segs 0.02 0.00 13.37 - - - mark_page_accessed 0.02 0.00 13.37 - - - __ia64_local_vector_to_irq 0.02 0.00 13.38 - - - wake_up_process 0.01 0.00 13.38 - - - kfree_skbmem 0.01 0.00 13.38 - - - scsi_next_command 0.01 0.00 13.38 - - - memcmp 0.01 0.00 13.39 - - - drain_array_locked 0.01 0.00 13.39 - - - lsapic_noop 0.01 0.00 13.39 - - - do_csum 0.01 0.00 13.39 - - - wake_up_page 0.01 0.00 13.39 - - - scsi_delete_timer 0.01 0.00 13.39 - - - cache_reap 0.01 0.00 13.40 - - - follow_page 0.01 0.00 13.40 - - - ip_local_deliver 0.01 0.00 13.40 - - - effective_prio 0.01 0.00 13.40 - - - skip_rbs_switch 0.01 0.00 13.40 - - - rt_hash_code 0.01 0.00 13.40 - - - nop 0.01 0.00 13.40 - - - scsi_done 0.01 0.00 13.41 - - - raw_end_io 0.01 0.00 13.41 - - - dont_preserve_current_frame 0.01 0.00 13.41 - - - raise_softirq_irqoff 0.01 0.00 13.41 - - - smp_send_reschedule 0.01 0.00 13.41 - - - raise_softirq 0.01 0.00 13.41 - - - unlock_page 0.01 0.00 13.41 - - - machvec_timer_interrupt 0.01 0.00 13.41 - - - tcp_cwnd_application_limited 0.01 0.00 13.41 - - - check_pgt_cache 0.01 0.00 13.42 - - - set_page_dirty 0.01 0.00 13.42 - - - e1000_read_phy_reg 0.01 0.00 13.42 - - - e1000_update_stats 0.01 0.00 13.42 - - - ia64_do_page_fault 0.01 0.00 13.42 - - - follow_huge_addr 0.01 0.00 13.42 - - - I_BDEV 0.01 0.00 13.42 - - - sk_stream_mem_schedule 0.00 0.00 13.42 - - - page_fault 0.00 0.00 13.42 - - - net_tx_action 0.00 0.00 13.42 - - - sys_gettimeofday 0.00 0.00 13.42 - - - __rcu_process_callbacks 0.00 0.00 13.42 - - - ipc_checkid 0.00 0.00 13.42 - - - __ia64_save_fpu 0.00 0.00 13.42 - - - find_busiest_queue 0.00 0.00 13.43 - - - pfm_stop 0.00 0.00 13.43 - - - sys_semop 0.00 0.00 13.43 - - - tcp_send_ack 0.00 0.00 13.43 - - - sys_poll 0.00 0.00 13.43 - - - free_block 0.00 0.00 13.43 - - - cascade 0.00 0.00 13.43 - - - do_select 0.00 0.00 13.43 - - - double_lock_balance 0.00 0.00 13.43 - - - i8042_interrupt 0.00 0.00 13.43 - - - __alloc_pages 0.00 0.00 13.43 - - - __ia64_inw 0.00 0.00 13.43 - - - handle_mm_fault 0.00 0.00 13.43 - - - del_timer_sync 0.00 0.00 13.43 - - - ia64_send_ipi 0.00 0.00 13.43 - - - ipc_unlock 0.00 0.00 13.43 - - - vsnprintf 0.00 0.00 13.43 - - - nr_blockdev_pages 0.00 0.00 13.43 - - - rcu_process_callbacks 0.00 0.00 13.43 - - - __free_pages 0.00 0.00 13.43 - - - ia64_fault 0.00 0.00 13.43 - - - ext2_permission 0.00 0.00 13.43 - - - profile_hit 0.00 0.00 13.43 - - - sys_lseek 0.00 0.00 13.43 - - - tasklet_action 0.00 0.00 13.43 - - - wb_kupdate 0.00 0.00 13.43 - - - alloc_pages_current 0.00 0.00 13.43 - - - buffered_rmqueue 0.00 0.00 13.43 - - - __get_free_pages 0.00 0.00 13.43 - - - show_stat 0.00 0.00 13.43 - - - batch_entropy_store 0.00 0.00 13.43 - - - __pollwait 0.00 0.00 13.43 - - - e1000_watchdog 0.00 0.00 13.43 - - - __tasklet_schedule 0.00 0.00 13.43 - - - run_local_timers 0.00 0.00 13.43 - - - task_timeslice 0.00 0.00 13.43 - - - __ia64_irq_to_vector 0.00 0.00 13.43 - - - do_generic_mapping_read 0.00 0.00 13.43 - - - bad_range 0.00 0.00 13.43 - - - time_interpolator_get_offset 0.00 0.00 13.43 - - - idle_cpu - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
