Comment 9 for bug 579117

David, /var/log/syslog contains the calibration timeout
messages; /var/log/messages contains the Underrun! messages... but
anyway, that's what "sort" is for...

In answer to your question, they are often synchronized:

Starting with a sample at 07:54 yesterday:

the 1st Underrun happens at 07:54:11, same time as a calibration
timeout.
the 2nd Underrun happens at 18:23:44, some 4 minutes after the last
calibration timeout and 1.5 minutes before the next one
the 3rd Underrun happens at 18:25:03, same time as a calibration timeout
the 4th Underrun and 5th happen at 18:25:04, same time as a calibration
timeout
the 6th Underrun happens at 18:26:43, same time as a calibration timeout
the 7th Underrun happens at 18:28:43, same time as a calibration timeout
the 8th Underrun happens at 18:28:44, same time as two calibration
timeouts

Hmm maybe I should have said they are most often synchronized!

On Wed, 2010-05-19 at 06:13 +0000, David Henningsson wrote:

> I'm afraid I don't know much more than you do at this point.
> Theoretically, if the watermark is 60 ms, anything below approx 50 ms
> shouldn't cause an underrun.
>
> Btw, are the "calibration timeout" and the "underrun" messages
> synchronized? You should be able to see both if you look in
> /var/log/syslog.
>

--
Regards,

Chris Hermansen · mailto:<email address hidden>