RELENG_7 jerky mouse and skipping sound (still a problem -BETA3)

[Anish Mistry]

On Sunday 30 December 2007, Kris Kennaway wrote:
> Kip Macy wrote:
> > On Nov 19, 2007 9:53 AM, Anish Mistry <mistry.7 at osu.edu> wrote:
> >> On Wednesday 07 November 2007, Anish Mistry wrote:
> >>> On Monday 05 November 2007, [LoN]Kamikaze wrote:
> >>>> Marc Fonvieille wrote:
> >>>>> On Thu, Oct 18, 2007 at 05:53:47PM +0200, [LoN]Kamikaze wrote:
> >>>>>> Anish Mistry wrote:
> >>>>>>> On Thursday 18 October 2007, Marc Fonvieille wrote:
> >>>>>>>> On Wed, Oct 17, 2007 at 12:28:30PM -0400, Anish Mistry 
wrote:
> >>>>>>>>> I just updated to RELENG_7 from 6.2 and I'm running into
> >>>>>>>>> some really annoying issues with jerky mouse movement and
> >>>>>>>>> skipping sound.  This seems to be similar to:
> >>>>>>>>> Re: SCHED_4BSD in RELENG_7 disturbs workflow
> >>>>>>>>> This happens both with 4BSD and ULE.
> >>>>>>>>>
> >>>>>>>>> I seems to happen when I'm compiling ports and a new
> >>>>>>>>> cc/bzip2/sh process fires off (I'm just watching top),
> >>>>>>>>> I'll get the skip/freezeup.
> >>>>>>>>
> >>>>>>>> [...]
> >>>>>>>>
> >>>>>>>> Using ULE and UP kernel (i.e. without SMP etc.) helped a
> >>>>>>>> bit the things but it's still very annoying to use firefox
> >>>>>>>> during ports build.  I see this lag/freeze on all boxes I
> >>>>>>>> use with 7.0, but it's true that with a fast machine
> >>>>>>>> people can ignore the problem, it's less obvious than with
> >>>>>>>> a 1GHz box for example.
> >>>>>>>
> >>>>>>> Yeah, I'm still seeing this behavior.  Does anyone have
> >>>>>>> suggestions on debugging?
> >>>>>>>
> >>>>>>> Thanks,
> >>>>>>
> >>>>>> I did post the solution in this thread.
> >>>>>
> >>>>> It has nothing to do with the mouse.
> >>>>
> >>>> Does the problem persist for you? It's gone for me, even with
> >>>> moused.
> >>>
> >>> Yes, the problem seems to have been fixed.  I'm back to
> >>> kern.hz=1000 and removed FULL_PREEMPTION.  No skipping.
> >>
> >> It looks like I spoke too soon.  I've just tried to compile miro
> >> and as it was compiling the boost-python dependency I noticed
> >> the problem again.  Switching kern.hz="100" seems to fix the
> >> problem.  Can any of the developers in this area reproduce the
> >> issue?  It's pretty easy to reproduce on my 1.33Ghz Athlon.
> >
> > There is an ithread priority inversion bug that might be causing
> > this. The fix for that should be going in shortly.
> >
> >  -Kip
> > _______________________________________________
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>
> Anish,
>
> Can you confirm that this fix helped for you?  i.e. do you still
> see the problem?
FreeBSD 7.0-RC1 #14: Sun Dec 30 21:50:59 EST 2007
I'm still seeing this problem, but it isn't nearly as bad.  I still 
get some jerky mouse movement, but music doesn't skip now when I'm 
compiling.

-- 
Anish Mistry
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