Messages in this thread | | | Date | Thu, 20 Mar 2003 09:29:47 +0100 | From | Jens Axboe <> | Subject | Re: WimMark I report for 2.5.65-mm2 |
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On Thu, Mar 20 2003, Andrew Morton wrote: > Jens Axboe <axboe@suse.de> wrote: > > > > Besides, deadline is still the most solid choice. > > Deadline will always be the best choice for OLTP workloads. Or CFQ - it > should perform the same. > > All this workload does is seeks all over the disk doing teeny synchronous > I/O's. It is the worst-case for AS. > > What we are trying to do at present is to make AS not _too_ bad for these > workloads so that people with mixed workloads or who are not familiar with > kernel arcanery don't accidentally end up with something which is > significantly slower than it should be. > > It is an interesting test case.
I understand that. A deadline run is still interesting if there are regressions from -mm2 to -mm3, for example. If deadline shows the same regression, it's likely not a newly introduced AS bug.
-- Jens Axboe
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