[linux-audio-user] Linux DAW otimization (and Kanotix)

[Lee Revell]

On Fri, 2006-02-17 at 20:59 -0800, Renato Fabbri wrote:
> I intend usind real time apps like PD to process
> sounds captured by mics and spacialise them.. that old
> thing. Of course I need other softs to compose and
> make sounds, but that´s not the goal.
> 
> How can I optimize my OS to get lower lattency?
> 
> My my processor is a P4 3,4 HT, 1Gb ram ddr2, and my
> card is a m-audio Delta 66.
> 
> I am testing some distros and Kanotix just caused me a
> great impression. It´s fast, clean, functional. For
> now I intend using it.

What's the best usable latency now?  What kernel are you using?  2.6.14
or 2.6.15 should be good.

This helps a lot:

echo 64 > /sys/block/hdc/queue/max_sectors_kb

(replace hdc with your drive, repeat for all of them)

Try that before you resort to patching the kernel.

IIRC PD is not the best designed RT app (GUI stuff can delay the RT
threads), but this might have improved lately.

Lee