[LAU] Re : lowest usable latency from a USB 1 device?

[Frank Kober]

----- Mail original -----
> De : Paul Davis <paul at linuxaudiosystems.com>
> À : linux-audio-user <linux-audio-user at lists.linuxaudio.org>
> Cc : 
> Envoyé le : Vendredi 16 Septembre 2011 19h33
> Objet : [LAU] lowest usable latency from a USB 1 device?
> 
> if you can run a USB 1 class compliant audio device on your linux
> system with lower latency than the current minimum so far posted to
> this thread, please post with the settings you use and the type of
> device. if your best performance has already been posted, no need to
> repeat it.
> 
> i'll get the ball rolling with 2048 frames. note that we are assuming
> 2 channels only, but duplex mode (simultaneous capture+playback).
> 
> thanks.
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As some others here:

Edirol UA-25 with
nperiods 3, frame size 128, 2x2 (duplex) 48kHz
without any problems on a 2.6.33.6-1.rt26 kernel and some sporadic xruns on a 3.1.0-rc5