Sound Crackling When Reading From Hard Drives

[Ariff Abdullah]

On Thu, 16 Mar 2006 16:50:17 -0600
Mark Kane <mark at mkproductions.org> wrote:
> 
> My sound is compiled into the kernel so I'm not sure how to reload
> the  driver without rebooting. I did try the above suggestions
> though. When  trying 32768 and 65536 the crackling in the audio got
> worse/louder than  before when copying data.
> 
Maybe you're experiencing resource contention caused by irq sharing.
Take a look at the output of vmstat -i. Try to move the soundcard
elsewhere (other pci slot). Another thing to consider is PCI Latency
Timer settings. If your BIOS has the option to toggle the value, try
to increase it. If not, use this:

   http://people.freebsd.org/~ariff/utils/pcilattimer



--
Ariff Abdullah
FreeBSD
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