Messages in this thread | | | Date | Fri, 5 Sep 2003 13:17:22 -0700 | From | Mike Fedyk <> | Subject | Re: OSDL DBT-2 AS vs. Deadline 2.6.0-test4-mm3 |
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On Fri, Sep 05, 2003 at 11:27:56AM -0700, markw@osdl.org wrote: > FUNCTIONS SORTED BY LOAD: > -- ------------------------- ------- ------------------------- ------- > # as 2.6.0-test4-mm3 ticks deadline 2.6.0-test4-mm3 ticks > -- ------------------------- ------- ------------------------- ------- > 1 default_idle 5746007 default_idle 5764451 > 2 schedule 53609 schedule 52174 > 3 scsi_request_fn 29340 > do_softirq 25905 > 4 __make_request 25949 scsi_request_fn 23549 > 5 do_softirq 25560 __make_request 20325 > 6 scsi_end_request 16524 try_to_wake_up 11723 > 7 try_to_wake_up 11939 scsi_end_request 11340 > 8 dio_bio_end_io 11253 dio_bio_end_io 10950 > 9 do_anonymous_page 8234 do_anonymous_page 8110 > 10 ipc_lock 7366 ipc_lock 6706 > 11 sys_semtimedop 5493 sys_semtimedop 5152 > 12 sysenter_past_esp 5080 sysenter_past_esp 5064 > 13 direct_io_worker 5065 direct_io_worker 4732 > 14 dio_await_one 4084 dio_await_one 3779 > 15 __copy_to_user_ll 3643 __mod_timer 3571 > 16 __mod_timer 3582 blk_run_queue 3521 > 17 blk_run_queue 3411 __copy_to_user_ll 3495 > 18 __might_sleep 3316 __might_sleep 3277 > 19 kmem_cache_alloc 3225 kmem_cache_alloc 3054 > 20 semctl_main 3072 semctl_main 3016 >
Looking at this quickly, scsi_request_fn, __make_request, and scsi_end_request are show the most additional cost on AS. As well as __copy_to_user_ll and ipc_lock. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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