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    SubjectRe: [patch] voluntary-preempt-2.6.8.1-P0

    * Lee Revell <rlrevell@joe-job.com> wrote:

    > On Sun, 2004-08-15 at 22:58, Ingo Molnar wrote:
    > > * Ingo Molnar <mingo@elte.hu> wrote:
    >
    > > if it doesnt change the xruns then it shows that it's not the locking of
    > > make_pages_present() that interacts with jackd, but it's what it does
    > > that interacts with it (or with the audio driver).
    > >
    > > assuming the DMA-starvation theory isnt excluded via mlock-test2.c:
    >
    > Sorry, you lost me here. Does the behavior of mlock-test2 point to
    > the locking of make_pages_present interfering with jackd, or with the
    > audio driver?

    it's rather pointing in the direction of locking, away from DMA issues.
    Any DMA issue should not depend if we do the activity in 8 chunks or in
    one go. Locking on the other hand depends on the length of a single
    chunk, not on the length of the total activity.

    Ingo
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