lkml.org 
[lkml]   [2004]   [Nov]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.29-0

    * Ingo Molnar <mingo@elte.hu> wrote:

    > > So i don't really know how to go about this. I suppose i just run
    > > PREEMPT kernels instead of PREEMPT_REALTIME. Maybe it's the overhead
    > > which is killing jackd performance with PREEMPT_REALTIME, but i don't
    > > believe so (50ms? nah!).
    >
    > agreed, no way can 50msec be related to overhead.

    there's one exception: if the RT workload is _just_ below 100% CPU
    utilization, then PREEMPT_RT's overhead could push it above 100% and
    trigger CPU overload, with big delays. What is the maximum CPU usage
    during the test, while the system is otherwise idle?

    Ingo
    -
    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: 2005-03-22 14:08    [W:4.058 / U:0.548 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site