Re: Re: [linux-audio-dev] Linux kernel HZ, audio latency and how to measure?

From: Mulyadi Santosa <a_mulyadi@email-addr-hidden>
Date: Fri Aug 18 2006 - 22:07:47 EEST

Hello...

> > recording audio doesn't involve using the system timer at all. the
> > only clock involved is the sample clock that drives the audio
> > interface.

I see. I took a wrong conclusion then....

> > having HZ set too high could conceivably make the system more
> > likely to xrun, but this is not likely with a fully RT kernel.

Ehm, excuse me. "xrun" here refers to a program's name?

> High HZ will improve MIDI timing though. MIDI is more likely to be
> polled than interrupt driven.

polled? Well, interesting. Do you mean MIDI playback?

BTW, a friend of mine suggest to take audio synthesizing as the
"benchmark" for this HZ experiment. So far, I guess that synthesizing
is also timing sensitive application, thus tweaking HZ could make
difference. Thoughts?

regards,

Mulyadi
Received on Sat Aug 19 04:15:13 2006

This archive was generated by hypermail 2.1.8 : Sat Aug 19 2006 - 04:15:13 EEST