Messages in this thread |  | | Subject | Re: OSDL DBT-2 AS vs. Deadline 2.5.68-mm2 | From | Mark Haverkamp <> | Date | 07 May 2003 10:39:11 -0700 |
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On Wed, 2003-05-07 at 10:36, Jens Axboe wrote: > On Wed, May 07 2003, markw@osdl.org wrote: > > On 7 May, Jens Axboe wrote: > > > On Wed, May 07 2003, markw@osdl.org wrote: > > >> I've collected some data from STP to see if it's useful or if there's > > >> anything else that would be useful to collect. I've got some tests > > >> queued up for the newer patches, but I wanted to put out what I had so > > >> far. > > >> > > >> > > >> METRICS OVER LAST 20 MINUTES: > > >> --------------- -------- ----- ---- -------- ----------------------------------- > > >> Kernel Elevator NOTPM CPU% Blocks/s URL > > >> --------------- -------- ----- ---- -------- ----------------------------------- > > >> 2.5.68-mm2 as 1155 94.3 8940.2 http://khack.osdl.org/stp/271356/ > > >> 2.5.68-mm2 deadline 1255 94.9 9598.7 http://khack.osdl.org/stp/271359/ > > >> > > >> FUNCTIONS SORTED BY TICKS: > > >> -- ------------------------- ------- ------------------------- ------- > > >> # as 2.5.68-mm2 ticks deadline 2.5.68-mm2 ticks > > >> -- ------------------------- ------- ------------------------- ------- > > >> 1 default_idle 6103428 default_idle 5359025 > > >> 2 bounce_copy_vec 86272 bounce_copy_vec 97696 > > >> 3 schedule 63819 schedule 70114 > > >> 4 __make_request 30397 __blk_queue_bounce 31167 > > >> 5 __blk_queue_bounce 26962 scsi_request_fn 26623 > > >> 6 scsi_request_fn 24845 __make_request 25012 > > > > > > uhh nasty, you are spending a lot of time bouncing. How much RAM is in > > > the machine, and what is the scsi hba? > > > > The system has 4GB of memory and has a DECchip 21554 (aacraid) that the > > external drives are connected to. Mark Haverkamp is currently trying to > > address those bounce buffers. > > aacraid actually looks sane enough. so you should just be able to set > host->highmem_io and it should work.
That is what I thought, but I wanted to get a machine with lots of memory to try it out on.
Mark. -- Mark Haverkamp <markh@osdl.org>
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