Subject: Re: [linux-audio-user] Tracking down overruns
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Sun Sep 14 2003 - 12:58:59 EEST
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
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