[alsa-devel] HDA irq understanding

Raffaele Recalcati lamiaposta71 at gmail.com
Mon Feb 6 19:22:01 CET 2012


> Sorry, is your problem that you *do* get broken audio when you load the
> system, or that you *don't* get broken audio when you load the system?

I don't

> Either way, PulseAudio uses RT prio to get higher priority than your load
> scripts, so this is used in PulseAudio <=> ALSA communication, but not in
> mplayer <=> PulseAudio communication.

In fact the first problems appears in gnome interface
I'll do some SCHED_RR cpu loads applications.

> For the 10 msec frequency, it looks like timer-based scheduling is turned
> off (or possibly mplayer is using very small buffer sizes?). You might get
> help with this in the pulseaudio-discuss mailinglist.
> --
> David Henningsson, Canonical Ltd.
> http://launchpad.net/~diwic

I'll do some test changing mplayer buffer.


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