[pulseaudio-discuss] [PATCH] alsa: disable period wakeups in tsched mode if possible

Colin Guthrie gmane at colin.guthr.ie
Tue Feb 1 02:11:10 PST 2011

'Twas brillig, and Pierre-Louis Bossart at 31/01/11 19:20 did gyre and
> This patch reflects a new capability that Lennart was wishing
> for. Wish granted...
> Re-submitting it now that alsa-lib 1.0.24
> provides additional entry points to disable period
> wakeups in timer-scheduling mode if hardware can
> work without it (HDAudio, oxygen and Intel SST).
>     Example with standard playback on HDAudio output
>     Before change:
>     Top causes for wakeups:
>        3.8% (  5.4)   [hda_intel] <interrupt>
>        2.8% (  4.0)   alsa-sink
>     After change:
>     Top causes for wakeups:
>        2.3% (  3.0)   alsa-sink

I can't actually test this, but I know you have been working on this
closely of late so trust you completely :)

Thanks and pushed.



Colin Guthrie

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