Messages in this thread | | | Date | Sat, 24 Jul 2010 12:03:01 +0200 | From | Jens Axboe <> | Subject | Re: [PATCH] cfq-iosched: don't allow aliased requests to starve others |
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On 07/24/2010 10:04 AM, Heinz Diehl wrote: > On 14.07.2010, Jeff Moyer wrote: > >> Comments, as always, are welcome. > > This patch, applied to 2.6.35-rc6, increases desktop interactivity > _NOTICEABLY_ on my quadcore machine, and the machine stays rock-stable. > I have now tested this patch with the latest 2.6.35-rc kernels over > 1 week. > > Unfortunately, I can't provide some testing results which makes this > statement more objective, but I'll do some synthetic testing in the next > days.
It is extremely unlikely that this patch will have any impact on "normal" workloads. To even hit a code path where it would make a difference, you would need to use O_DIRECT IO, otherwise you cannot have aliases in the IO scheduler.
-- Jens Axboe
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