Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-2

[Adam Heath]

On Wed, 24 Nov 2004, Ingo Molnar wrote:

>
> * Adam Heath <doogie@xxxxxxxxxx> wrote:
>
> > > > I'm seeing something very odd.  It's against 29-0.  I also seem to
> > > > recall seeing something similiar reported earlier.
> > > >
> > > > I'm seeing pauses on my system.  Not certain what is causing it.
> > > > Hitting a key on the keyboard unsticks it.
> > >
> > > at first sight this looks like a scheduling/wakeup anomaly. Please
> > > re-report this if it happens with the current (30-4) kernel too. Also,
> > > could you test the vanilla -mm tree, it has a few scheduler updates too.
> >
> > 2.6.10-rc1-mm3 doesn't have the same problem.  Didn't have a more
> > recent mm kernel available last night.  Will compile one, and always
> > keep it available.
>
> -rc2-mm2 would be nice to test - there are a number of new interactivity
> fixes from Con being test-driven in -mm right now. In particular, these
> patches were added in -rc1-mm4. These are the patches in question:
>
>  sched-adjust_timeslice_granularity.patch
>  requeue_granularity.patch
>  sched-remove_interactive_credit.patch
>
> you can download them individually from:
>
>  http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.10-rc2/2.6.10-rc2-mm2/broken-out/
>
> so if these symptoms still occur with vanilla -rc2-mm2, could you try to
> unapply them, in reverse order? (there might be rejects when you try
> that, due to patch dependencies - let me know if it doesnt work out and
> i'll do an undo patch.)

The symptoms still occur with 30-9.  I'll be trying rc2-mm2 over the holiday.

Came in this morning, and after hitting a key, my machine said it was 2:38am,
when it was actually 11:10am.  All internet connections had died(obviously).
But the machine started working fine once I hit that key.  No messages in
dmesg.
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