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    SubjectRe: Scheduler ( was: Just a second ) ...
    On Mon, 17 Dec 2001, Linus Torvalds wrote:

    >
    > On Mon, 17 Dec 2001, William Lee Irwin III wrote:
    > >
    > > 5: 46490271 XT-PIC soundblaster
    > >
    > > Approximately 4 times more often than the timer interrupt.
    > > That's not nice...

    0: 24867181 XT-PIC timer
    5: 9070614 XT-PIC soundblaster

    After I bootup I start X and then xmms and then my system plays mp3's
    almost all the time.

    > > > Which sound driver are you using, just in case this _is_ the reason?
    > >
    > > SoundBlaster 16

    I have an old ISA SoundBlaster 16

    > Raising that min_fragment thing from 5 to 10 would make the minimum DMA
    > buffer go from 32 bytes to 1kB, which is a _lot_ more reasonable (what,
    > at 2*2 bytes per sample and 44kHz would mean that a 1kB DMA buffer empties
    > in less than 1/100th of a second, but at least it should be < 200 irqs/sec
    > rather than >400).

    After watchning /proc/interrupts with 30 second intervals I see that I
    only get 43 interrupts/second when playing 16bit 44.1kHz stereo.

    And according to vmstat I have 153-158 interrupts/second in total
    (it's probably the networktraffic that increases it a little above 143).

    /Martin

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