[LAU] usb and jack

[rosea grammostola]

Hi,

I found this info:


      "USB and jack

The USB interrupt period is 1 msec. To be able to get lower latency with 
jack when using it with an USB device, you have to use a setting as 
48kHz and 3 period. It will makes the buffer time a multiple of 1 msec 
and you will get a much lower latency as with the default 2 period. 
Additionaly, loading the snd-usb-audio with the parameter "nrpacks=1" 
will give you a much lower latency (for this to work take care that 
CONFIG_USB_BANDWIDTH is not set and CONFIG_USB_DYNAMIC_MINORS is not set 
in your running kernel)."


http://proaudio.tuxfamily.org/wiki/index.php?title=Howto_RT_Kernel#USB_and_jack


1) is this info still up-to-date?
2) how do I exactly take care of this:
"Additionaly, loading the snd-usb-audio with the parameter "nrpacks=1" 
will give you a much lower latency (for this to work take care that 
CONFIG_USB_BANDWIDTH is not set and CONFIG_USB_DYNAMIC_MINORS is not set 
in your running kernel)"

(Debian (based) systems)

\r