Re: x86_64 problem - solved

On Sun, Jun 11, 2006 at 09:00:26PM +0100, John Rigg wrote:
> Something else I notice is that with pcm_multi the CPU load is about
> 24% when jamin is idling (and doesn't change much when processing
> audio).
> Just using hw:0 reduces CPU load to 2.5% when idling.

It turns out that indicated CPU load is related to period size,
not number of channels. At -p32 it's around 2.5%, at -p64 it's 2.2% and
at -p128 it fluctuates between 23% and 60%, then settles down to around
22% for bigger period sizes. This is regardless of whether I use one
card or three.
Of course those small periods wouldn't be any good for processing audio
due to xruns.

John