[linux-audio-user] Tracking down overruns

[Steve Harris]

On Sun, Sep 14, 2003 at 11:21:33 +0200, Robert Jonsson wrote:
> Hi,
> 
> >
> > http://www-2.cs.cmu.edu/~mukesh/hacks/spindown/t1.html
> >
> > Lastly, I changed the IO_support setting to 1, and Ardour has now been
> > happily recording for an hour and a half!  I was also able to run the
> > latency test without overruns (the 4 ms. spike dropped to 2.7 ms.).  Thanks
> > so much for your help, Mark & Jan!
> 
> This thread became a really good lowlatency tutorial, great! :) I'm not sure 
> what this IO_support thing is, but I guess it's in Jan's guide.

Turn it on with hdparm -c 1 /dev/hd<whatever>

It turns on 32bit access for IDE drives, sounds important, it was off
on my system.

- Steve