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

[Lee Revell]

On Fri, 2006-08-18 at 12:38 -0400, Paul Davis wrote:
> On Fri, 2006-08-18 at 23:10 +0700, Mulyadi Santosa wrote:
> > Is there any relationship between kernel HZ and audio timing? I imagine 
> 
> no. or almost none.
> 
> recording audio doesn't involve using the system timer at all. the only
> clock involved is the sample clock that drives the audio interface.
>  
> having HZ set too high could conceivably make the system more likely to
> xrun, but this is not likely with a fully RT kernel.

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

Lee