lkml.org 
[lkml]   [2007]   [Jan]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 2.6.20-rc4 1/4] futex priority based wakeup
    Pierre Peiffer a écrit :
    > Ulrich Drepper a écrit :
    >>
    >> I have never seen performance numbers for this. If it is punishing
    >> existing code in a measurable way I think it's not anacceptable default
    >> behavior.

    > May be, supposing it makes sense to respect the priority order only for
    > real-time pthreads, I can register all SCHED_OTHER threads to the same
    > MAX_RT_PRIO priotity ?

    Moreover, the performance must be considered, sure, but after all, "man
    pthread_cond_broadcast" says:
    <<
    If more than one thread is blocked on a condition variable, the
    scheduling policy shall determine the order in which threads are
    unblocked.
    >>

    ... this is not true today ...
    (of course, "shall" does not mean "mandatory", I know ;-) )

    --
    Pierre
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2007-01-10 13:43    [W:0.024 / U:60.712 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site