Messages in this thread | | | Date | Wed, 8 Dec 2004 13:47:01 +0100 | From | Jens Axboe <> | Subject | Re: Time sliced CFQ io scheduler |
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On Wed, Dec 08 2004, Jens Axboe wrote: > On Wed, Dec 08 2004, Jens Axboe wrote: > > > Hmm, damn. Lots of stuff. I guess some of the notable ones that I've > > > had trouble with are OraSim (Oracle might give you a copy), Andrew's > > > patch scripts when applying a stack of patches, pgbench... can't > > > really remember any others off the top of my head. > > > > The patch scripts case is interesting, last night (when committing other > > patches) I was thinking I should try and bench that today. It has a good > > mix of reads and writes. > > AS is currently 10 seconds faster for that workload (untar of a kernel > and then applying 2237 patches). AS completes it in 155 seconds, CFQ > takes 164 seconds.
Turned out to be a stupid dispatch sort error in cfq, now it has the exact same runtime as AS.
-- Jens Axboe
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