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    SubjectRe: [Fwd: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4]
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    On Mon, Nov 01, 2004 at 11:51:25PM +0100, Florian Schmidt wrote:
    [...lock debugging...]
    > ack. understood. i was just asking since i don't have a second machine and
    > thus am not really able to help with the deadlock debugging. so i figured i
    > could at least do some timing. btw: even with deadlock detection, the
    > results for 0.6.5 looked pretty good [in 10 minutes uptime ca.3-4% max
    > jitter [30something usecs]. until the deadlock that is [i head three finds
    > plus kernel compile at nice -10 running]..

    The lock chains aren't that deep in Linux so the algorithmic complexity
    is not going to hit some crazy polynomial time unless there's some seriously
    nasty contention at a certain point in the kernel (billions of readers for
    example against a write aquire). But when we start to see things like that
    under pressure is when we need to start shortening the need for that/those
    lock(s) for that/those critical section(s) in question.

    bill

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