Performance Issues with AMD64 3000+, 1.5GB RAM, FreeBSD 5.4-RELEASE

[Ariff Abdullah]

On Sat, 27 Aug 2005 13:38:00 -0500
Mark Kane <mark at mkproductions.org> wrote:
> Mark Kane wrote:
> > Ariff Abdullah wrote:
> > 
> >> These are my suggestions:
> >> 1) enable 'options PREEMPTION'. This is a MUST.
> >> 2) use SCHED_ULE instead of SCHED_4BSD. ULE is pretty stable on
> >me, >    but I can't guarantee (especially combining with
> >PREEMPTION). >    It doesn't hurt to give it a try.
> >> 3) Apply these patches:
> >>
> >>
> >http://staff.mybsd.org.my/skywizard/FreeBSD/sound/jroberson_flushb
> >uf_RELENG_5.diff  >
> >>
> >http://staff.mybsd.org.my/skywizard/FreeBSD/sound/snd_RELENG_5_200
> >50825_035.diff  >
> > 
> > 
> > Well I added PREEMPTION to the kernel yesterday as well as the
> > first  patch by Jeff Robertson. Immediately upon kernelinstall and
> > reboot I  tried untarring Firefox and Thunderbird, as well as
> > tarring them both  back up. Not a single skip, stutter, or
> > freezing of the mouse/display!
> > 
> > I did more testing last night like listening to audio with
> > downloads  open and encoding video, and I didn't hear one skip at
> > all. The only  time I heard a little static was when I was burning
> > a DVD and listening  to audio at the same time, but I can
> > understand that.
> > 
> > Thanks to everyone who replied, this seems to be fixed for now. :)
> > 
> > -Mark
> 
> I do notice that when doing some things like using unrar to extract
> a  file or loading a video into video encoding software I do get
> some of  the same little crackles and static in the audio. I didn't
> notice this  static/crackling ever before applying that first patch.
> I am still  skip/stutter free though :).
> 
> Might the second patch help the crackling/static?
> 
> 
Perhaps. You should give it a try. There is another issue as well
(such as PCI latency timer), but only after you applied all those
suggested patches.

--

Ariff Abdullah
MyBSD

http://www.MyBSD.org.my (IPv6/IPv4)
http://staff.MyBSD.org.my (IPv6/IPv4)
http://tomoyo.MyBSD.org.my (IPv6/IPv4)