[pulseaudio-discuss] [RFC PATCH] alsa-sink: Reduce hardware pointer update syscalls

[Laurențiu Nicola]

That's what I tried to do before, but the number varies wildly (10-30%,
and that's with paplay and without resampling). Perhaps looking at the
total CPU time used would be a better measure, but I think it would be
noisy too.

On Tue, Sep 30, 2014, at 09:43, David Henningsson wrote:
> 
> 
> On 2014-09-29 16:33, Laurențiu Nicola wrote:
> > If nobody tried it, I might test the patch on my USB DAC. The problem is
> > that I'm not sure what's the best way to benchmark the playback. Do you
> > have some tips on that?
> 
> Run "top" in a low-latency playback scenario, that should be enough. You 
> might want to verify (e g with pactl) that you end up with the same 
> latency both with and without the patch.
> 
> Maybe others have more accurate methods to measure CPU consumption.
> 
> -- 
> David Henningsson, Canonical Ltd.
> https://launchpad.net/~diwic
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