[linux-audio-user] hello gentoo? speed up please...

[ix at replic.net]

> 
> Anybody have any tips on what to look at to tweak it?  Seems like it should
> do better than that... I didn't see it as a problem until in the last few
> days I started playing with playing softsynths live directly into Ardour -
> you've gotta be running at -p 1024 or there's a latency that screws up your
> playing - at 8192 it's a downright 8th note delay...
> 
> Here's some vitals that I can think of:
> 
> OS:  gentoo 2.6.6-rc1 kernel (alsa built in)

positively ancient! emerge --sync && emerge gentoo-sources
will get you a 2.6.12-rc5 or whatever is the freshest..

secondly, disable OSS and ALSA in the kernel config (its ok to leave the toplevel 'sound' box checked) and emerge alsa-driver (to avoid compiling all drivers add a line to /etc/make.conf eg: ALSA_CARDS="mia,intel8x0,intel8x0m,usb-audio,virmidi"

if theres still issues, you could try mm-sources (which may have the realtime stuff merged) or the realtime stuff floating around..havent had a need here as the stock gentoo kernel works fine w/ 64 & 128 sample buffer...

> jack: 0.99.0
> ardour: beta28
> jack command line:
> 
> jackd -R -d alsa -d hw:0 -r 48000 -p 8192 <------- (or whatever)
> 
> harddrive:
> multicount on
> io support: 32 bit
> unmaskirq on
> use dma on
> keepsettings off
> readonly off
> readahead on
> 
> chip:  2ghz amd (I THINK - not at computer now)
> ram:  512MB
> 
> 
> thanks for any ideas! :)
> 
> ---------------------
> Aaron Trumm
> www.nquit.com
> -----------------------