Hey Pierre,

Not sure if the 2 are related but presuming they are...
I've just been testing an ESI UDJ6 soundcard and the image I backed up before updating the firmware would only run the card  with the usb and ethernet slowdown options.  Post rpi-update got 6 channels of audio without either slowdown required though I think it does run better (less system resources) with both options enabled.

My trusty ol' Griffin just 'works' with both installs so didn't notice any difference but I haven't yet checked whether usb slowdown is still required for duplex with that soundcard as of yet.

This is on a rev1 256meg board btw.

Regards,

Julian

On 8 May 2013 14:33, Pierre Massat <pimassat@gmail.com> wrote:

hi Julian,

Could you please tell us what difference this makes in terms of performance ? Do you use JACK ? Is this any better than with Pd only ?

Cheers,

Pierre.

2013/5/8 Julian Brooks <jbeezez@gmail.com>

Thanks to Dan for the

'update alsa mmap' command'

Thought I'd buggered up my install until I ran that command, now all happy again.

Julian

On 4 May 2013 20:18, Julian Brooks <jbeezez@gmail.com> wrote:

Hi all,

Dunno if everyone's on this already but looks useful:
http://martinezjavier.wordpress.com/2013/04/27/mmap-support-for-raspberry-pi-bcm2835-alsa-driver/

From here:
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=38&t=33462&p=334943#p334943

Not tested as of yet but anything that squeezes a bit more audio performance out of the RPi is to be welcomed.

rpi-update ahoy,

Julian

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