[lkml]   [2007]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [patch] CFS scheduler, -v8

    * William Lee Irwin III <> wrote:

    > > There is also p->wait_runtime which is taken into account when
    > > calculating p->fair_key. So if p3 had waiting in runqueue for long
    > > before, it can get to run quicker than 10ms later.
    > Virtual time is time from the task's point of view, which it has spent
    > executing. ->wait_runtime is a device to subtract out time spent on
    > the runqueue but not running from what would otherwise be virtual time
    > to express lag, whether deliberately or coincidentally. [...]

    CFS is in fact _built around_ the ->wait_runtime metric (which, as its
    name suggests already, expresses the precise lag a task observes
    relative to 'ideal' fair execution), so what exactly makes you suspect
    that this property of the ->wait_runtime metric might be 'coincidental'?

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2007-05-02 20:19    [W:0.020 / U:27.248 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site