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    SubjectRe: [PATCH] O10int for interactivity
    On Mon, Jul 28, 2003 at 11:40:41AM -0700, Andrew Morton wrote:
    > Valdis.Kletnieks@vt.edu wrote:
    > >
    > > I am, however, able to get 'xmms' to skip. The reason is that the CPU is being
    > > scheduled quite adequately, but I/O is *NOT*.
    > >
    > > ...
    > > I'm guessing that the anticipatory scheduler is the culprit here. Soon as I figure
    > > out the incantations to use the deadline scheduler, I'll report back....
    >
    > Try decreasing the expiry times in /sys/block/hda/queue/iosched:
    >
    > read_batch_expire
    > read_expire
    > write_batch_expire
    > write_expire

    I noticed that when bringing a huge application out of swap (mozilla,
    openoffice, also tested the gimp with 50 images open) that dividing
    everything by 2 in those 4 files I get a decent process fork. Without
    this tuning the fork (xterm) waits till the application is back up.

    --
    Regards,

    Wiktor Wodecki
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