[linux-audio-user] Ardour, Jack, and 2.6 kernels + XRuns with the Audiophile 24/96 M-Audio

[Malcolm Baldridge]

> So, am I completely hosed with my Adaptec SCSI drive setup?  Anybody 
> have any insight into these Adaptec controllers?  I've fussed with the 
> setpci latency_timer settings (from Jan Depner's "Installing and 
> configuring ALSA, JACK, & Ardour..." web site), but still see long 
> xruns.  

If you could email the output from lspci -v and procinfo, that would be great.

Also, which exact kernel setup are you using?  Preemptible? 
Preempt+low-latency?  Con Kolivas' "LCK1" patches which combine O(1)
scheduler, and two sets of low-latency patches, including patches to the I/O
subsystem?

Also, which filesystems are you using for your audio data drive?  If you're
using ext3, which journalling mode?  data=writeback seems to provide alot
better latency than the default data=ordered.  Reiserfs seems to solve alot
of problems as well, if you're willing to reformat your audio drive.  It's
easier to change your ext3 journalling mode (no reformat is necessary).

What kind of SCSI drives are you using?

=R=


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