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    SubjectRe: 2.5.74-mm1
    Date
    On Saturday 05 July 2003 02:16, Daniel Phillips wrote:
    > It now tolerates window dragging on this unaccelerated moderately high
    > resolution VGA without any sound dropouts. There are still dropouts while
    > scrolling in Mozilla, so it acts much like 2.5.73+Con's patch, as expected.

    Update: dropouts still do occur while moving windows, but rarely. When they
    do occur, they are severe. A debian dist-upgrade just caused a dropout - and
    another just now, about 3 seconds long. I feel that tweaking is only going
    to get us so far with this. The situation re scheduling in 2.5 feels much as
    the vm situation did in 2.3, in other words, we're halfway down a long twisty
    road that ends with something that works, after having tried and failed at
    many flavors of tweaking and tuning. Ultimately the problem will be solved
    by redesign, and probably not just limited to kernel code.

    > I had 2.5.74 freeze up a couple of times yesterday, resulting in a totally
    > dead, unpingable system, so now I'm running 2.5.74-mm1 with kgdb and hoping
    > to catch one of those beasts in the wild.

    Update: this is easily repeatable. A few quick switches between X and text
    mode triggers the freeze reliably. On two occasions, I had a lockup while
    just doing an innocent window operation. It also happens in 2.4, so it isn't
    a 2.5 problem per se. Is it a pure hardware problem? It's always easy to
    take that position. I can only guess at the moment. Kgdb is no help in
    diagnosing, as the kgdb stub also goes comatose, or at least the serial link
    does. No lockups have occurred so far when I was not interacting with the
    system via the keyboard or mouse. Suggestions?

    Regards,

    Daniel

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