[pulseaudio-discuss] PulseSink Properties

Vallabha Hampiholi vallabha.pa at googlemail.com
Fri Jul 29 02:26:34 PDT 2011

Hello Pierre,

Thanks for your inputs.

I will test this once I have the hardware available with me and keep you
posted on this.

Regarding the tool, I am not sure if my processor has enough bandwidth to
run those tools on the platform. Need to find out a way to simulate it on


On Fri, Jul 29, 2011 at 12:04 AM, pl bossart <bossart.nospam at gmail.com>wrote:

> On Wed, Jul 27, 2011 at 12:55 AM, Vallabha Hampiholi
> <vallabha.pa at googlemail.com> wrote:
> > We are now running PA with high resolution timers enabled in the kernel.
> >
> > Yet I still can hear the audio glitches.
> >
> > Attached are new traces.
> I: alsa-sink.c: Using 16.0 fragments of size 8192 bytes (46.44ms),
> buffer size is 131072 bytes (743.04ms)
> I: alsa-sink.c: Time scheduling watermark is 20.00ms
> This seems really wrong. If you are using timer-based scheduling,
> looks like you are setting a very small ALSA period size for no good
> reason. Try using 2 fragments in daemon.conf to reduce the number of
> ALSA interrupts.
> Try also using frace and pytimechart (available on gitorious) to
> figure out what is going on in your system, there's nothing like a
> visual representation of thread activity to understand possible
> overhead or the reason for wakes/underflows.
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