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    SubjectRe: [RFC][PATCH] Multimedia scheduling class
    Peter Zijlstra wrote:
    > Well, that's not my problem is it ;-), just batter them with a
    > clue-stick, no need to fudge the kernel for that.

    Sure, been doing that already... :)
    There's just sort of a huge gap between rt-schedulers and the normal

    > Right, which is where deadline scheduling would be nice. Once you start
    > running into the budget throttle you know you've got to start dropping
    > frames in order to keep up.
    > The proposal is for it to start sending SIGXCPU once it starts
    > throttling tasks in order to notify them of missed deadlines etc.

    For sure this is nice for certain tasks. I'm not entirely convinced if
    the average media player or Flash-plugin would or should start using these.

    I believe both approaches could co-exist to address different needs.
    SCHED_MM is for the average software and is in a sense similar to
    SCHED_BATCH and SCHED_IDLE, just targeting different use cases.
    Modification is reasonably small and shouldn't have any impact when not
    used. Deadline scheduler would probably belong to the

    > Like said, deadline schedulers can help here. You can even dynamically
    > adjust the parameters -- eg. fall back to half frame rate but double
    > budget or something.

    Managing the budget in an average system will be painful. In a
    completely embedded environment this is of course rather straightforward.

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      Last update: 2009-01-13 10:47    [W:0.022 / U:1.076 seconds]
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