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    SubjectRe: [PATCH] deadline io scheduler

    > 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

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      Last update: 2005-03-22 13:29    [W:0.029 / U:59.652 seconds]
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