[ardour-users] Help sorting out XRuns

David Mulcahy eseol at tiscali.co.uk
Fri Jan 13 07:55:14 PST 2006

On Friday 13 January 2006 14:48, Ross Vandegrift wrote:
> On Fri, Jan 13, 2006 at 03:01:28PM +0100, Petter Sundl??f wrote:
> > Huh?
> >
> > http://jackit.sourceforge.net/docs/faq.php#a57
> >
> > I quote: " It has been found that mounting /tmp/jack as tmpfs (in RAM)
> > solves problems that many people have experienced with xruns while using
> > JACK"
> Many distros mount a tmpfs by default at /dev/shm, though not all do.
> So you're doing precisely the correct thing if /tmp/jack in fstab is
> tmpfs ::-)

Well there is no point mount /tmp/jack if jack doesnt even use it.  
jackd -V will tell you.  And I keep saying this but recent versions of glibc 
mount /dev/shm if it is compiled into the kernel without putting it 
into /etc/fstab.  It does on debian.  does it on other distros.  In fact with 
with recent kernels/distros no /tmp/jack or /dev/shm setting are needed in 
fstab.  I would be interested to see if this is the case.  Please let me 

You can see if something is mounted by using


Thanks Dave

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