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Date: Wed, 16 Apr 2003 06:35:05 -0500
From: Peter Schultz <peter@jocose.org>
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To: Wade Majors <wade@ezri.org>
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cc: current@freebsd.org
Subject: Re: Adjusting pcm buffersize?
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Wade Majors wrote:
> Hi, I am having problems with my soundcard that I think might be fixable 
> by increasing the buffersize, but the sysctl that reports the buffersize 
> is readonly.
> 
> Basically, even when there is relativly mild hard disk access (like a 
> large cvsup) I start to get underruns (as reported by a verbose 
> /dev/sndstat). CPU usage is nowhere near 100% yet the sound card is 
> starved. I have tried tweaking everything possible in with my 
> motherboard's BIOS with regards to PCI, AGP, and SDRAM read/writes to no 
> avail.
> 
> Any ideas?
> 
What kind of CPU(s) do you have?  I have dual pii 350s and have the same 
issue, but many other similar issues as well.  As someone who's been 
running 5.0-CURRENT since it began, I feel these are due to it's 
unfinished state, and have nothing to do with undersized buffers and 
whatnot.

Heck, right now I can't even run SCHED_ULE (panic: blockable sleep lock 
(sleep mutex) process lock), and when I can even my typing at the 
console gets interrupted.

Pete...