[alsa-devel] MIDI playback not keeping steady time with recent kernels

Clemens Ladisch clemens at ladisch.de
Tue Feb 8 16:40:08 CET 2011

Arthur Marsh wrote:
> OK, I applied this patch.
> When the MIDI file was playing:
> I still experienced some slow-down and speed-up under heavy load.

Is "some" less than previously?

It shouldn't be possible to get a speed-up; this looks as if your
computer's clock is not stable.  Are you using an NTP daemon?

What kind of heave load is this?  Does the same happen if you execute
"yes | tail" in a shell?


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