diagnostic tools to trace the reason xruns are happening?

[Robert Klaar]

Out of curriosity, my soundcard's got a clock, could I get jack tyo use this
one instead?

On Mon, Jun 6, 2011 at 10:31 AM, Ralf Mardorf <ralf.mardorf at alice-dsl.net>wrote:

> On Mon, 2011-06-06 at 11:16 +0900, Takashi Sakamoto wrote:
> > Hi,
> >
> > I use Echo Audiofire Pre 8 and worried about JACK's rondom XRUN.
> > Fortunately I have a friend who is Linux-based system engineer and ask
> > him this issue. Then he gave me two solutions.
> >
> > 1. see IRQ in /proc/interrupts
> > 2. use HPET as system clock source
>
> I'm using HPET when ever possible. Note that HPET is very problematic,
> you'll run out of free HPET devices very soon. IMO at the moment it only
> can be used as alsa seq timer, if you try using it with Jack, you are
> limited to the HPET devices that are available, each application needs
> it's own HPET device.
>
> If you should use Jack1, than try Jack2. On my machine Jack1 never
> worked.
>
> To enable HR-timer/HPET run
>
>        sudo chgrp audio /dev/hpet
>        sudo chmod g+rw /dev/hpet
>        sudo modprobe snd-hrtimer
>
> $ jackd --help
>               [ --clocksource OR -c [ c(ycle) | h(pet) | s(ystem) ]
>
> Hth,
>
> Ralf
>
>
>
> --
> Ubuntu-Studio-users mailing list
> Ubuntu-Studio-users at lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-studio-users/attachments/20110606/d1d27611/attachment-0001.html>