lkml.org 
[lkml]   [2004]   [Nov]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-9
From
Date
On Wed, 2004-11-24 at 04:45 +0100, Ingo Molnar wrote:
> * Lee Revell <rlrevell@joe-job.com> wrote:

> >
> > The symptom is that CPU bound tasks like kernel compiles will starve
> > I/O bound tasks like evolution for a _long_ time. If I have a kernel
> > build and external modules building at the same time and Evolution
> > goes to "Update message list...", it can sit and spin with a blank
> > message pane for a minute or two. If I suspend the builds, the
> > message list renders immediately.
>
> could you try the vanilla -rc2-mm2 kernel (with PREEMPT enabled), does
> it behave in such a way too? At first sight this could be a property of
> the upstream scheduler, but maybe it's special to PREEMPT_RT.
>

Have you notice this behavior with other interactive (I/O) tasks, such
as bash. Evolution is quite a big utility, and might be doing something
in the background. If you see the same behavior with bash then there is
no doubt that the compile is slowing down an I/O intensive task.

Another variable can be memory. Are you running this on something with
adequate memory, or is you harddrive churning like mad and you're
constantly thrashing the swap space?

-- Steve

-
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:0.672 / U:0.228 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site