Messages in this thread | | | Date | Mon, 30 Sep 2002 07:45:20 +0000 | From | Pavel Machek <> | Subject | Re: [PATCH] deadline io scheduler |
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Hi!
> Due to recent "problems" (well the vm being just too damn good at keep > disks busy these days), it's become even more apparent that our current > io scheduler just cannot cope with some work loads. Repeated starvartion > of reads is the most important one. The Andrew Morton Interactive > Workload (AMIW) [1] rates the current kernel poorly, on my test machine > it completes in 1-2 minutes depending on your luck. 2.5.38-BK does a lot > better, but mainly because it's being extremely unfair. This deadline io > scheduler finishes the AMIW in anywhere from ~0.5 seconds to ~3-4 > seconds, depending on the io load.
would it be possible to make deadlines per-process to introduce ionice?
ionice -n -5 mpg123 foo.mp3 ionice make
? Pavel
-- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.
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