[LAU] Too many xruns

S. Massy lists at wolfdream.ca
Thu Sep 6 16:49:13 UTC 2012


On Thu, Sep 06, 2012 at 08:50:03AM -0700, Kevin Cosgrove wrote:
> 
> On 6 September 2012 at 7:41, "Len Ovens" <len at ovenwerks.net> wrote:
> 
> > 
> > On Thu, September 6, 2012 2:07 am, Jeremy Jongepier wrote:
> > > On 09/06/12 07:28, Len Ovens wrote:
> > >> Be aware that putting: snd-ice1712 snd
> > >> will put all that other stuff on irq 16 between your ice and your
> > >> internal
> > >> card and you may wish to explicitly make them lower.
> > >
> > > I thought that rtirq looks at softirqs and not at hardware IRQs. So if
> > > the order in rtirq is snd_ice1712 snd then only snd_ice1712 gets a
> > > higher prio and all the other devices on the hardware IRQ get the
> > > default prio (which is 50). The next item in the list (snd) gets a prio
> > > below snd_ice1712 of which the step is defined by RTIRQ_PRIO_DECR
> > > (default is 5). If there are multiple snd devices they get a prio below
> > > the first snd device with steps of 1.
> > > Maybe this behavior has changed with the most recent version of rtirq,
> > > haven't tried it.
> > 
> > I'm on the wrong machine just now, but I found when I specify usb3 and
> > then usb strange things happen.  My comment was check what the changes to
> > the script do, it is not always what is expected. On this machine it is
> > pretty good. my config line is firewire snd usb3 usb i8042
> > I'm not sure why I left it this way actually as I do not use FW... I think
> > I have the port turned off in bios. Anyway, the usb ports are priority 75
> > and 74 and i8042 are 70 and 69... not 5 apart. On the netbook it is even
> > stranger.
> 
> What file is it where you're setting this priority order?
Under Debian, it is /etc/default/rtirq, not sure about Fedora.

Cheers,
S.M.


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