Messages in this thread | | | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-9 | From | Steven Rostedt <> | Date | Wed, 24 Nov 2004 08:33:24 -0500 |
| |
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/
| |