RELENG_7 jerky mouse and skipping sound

[Anish Mistry]

On Thursday 18 October 2007, [LoN]Kamikaze wrote:
> Anish Mistry wrote:
> > On Thursday 18 October 2007, [LoN]Kamikaze wrote:
> >> Anish Mistry wrote:
> >>> On Thursday 18 October 2007, [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.
> >>>
> >>> That doesn't solve the problem for me, so it seems that it's
> >>> unrelated.  It's just not mouse and sound, everything freezes
> >>> up for a bit.
> >>
> >> Which suggested solution did you follow. Did you deactivate
> >> moused? Did you configure Xorg to use the mouse directly. For me
> >> also the whole system froze, but it did so because of the mouse.
> >
> > Both, moused is disabled, and Xorg is configured to use
> > /dev/ums0. I'm still seeing the same issue.  If I've got
> > portmaster running an upgrade I still get the freezes.
>
> That's too bad, there seems to be a whole load of issues here.
Well, I just enabled FULL_PREEMPTION in my kernel conf and things are 
MUCH better, but the problem still reproducible when I check mail on 
all of my e-mail accounts in kmail.  Kmail forks off a process to 
check mail, and since I've got about a dozen accounts I get the 
jerkyness of the mouse for a couple of seconds while all of them are 
racing for the processor trying to check mail.  The behavior is much 
less pronounced and I can now play music and compile stuff without 
skipping and freezing.

-- 
Anish Mistry
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