8 Jul
2005
8 Jul
'05
1:38 p.m.
On Friday 08 July 2005 16:20, Frank smith wrote:
I use 16 tracks on 2 adats into the PC running Fervent
Software.
What is Fervent?
You may be able to borrow a Fervent CD and try this
and see if you still
get the xruns.
That sounds like a great idea, I've even been tempted to install Windows on
the box just to see if the Windows software can handle the hardware
configuration. But that's not an ideal solution - since I would have to trash
the existing data on the machine to do it.
I was under the impression that the RME multi's
were fully supported in
Linux.
They are. I think. Using only one of the two cards works fine.
Have you insured you have the RME drivers installed
and loaded?
I think so. HDSPConf see's both of them. I can also capture from both. The
only problem is the XRUNs.
Are you running 64bit?
Yes, is that a problem?
Your systems seems more than adequate for recording to
Ardour.
I thought so too, but I'm really struggling with this. :(
I've been doing some further investigating...
I gather there are two places where XRUNs happen:
1) ALSA <--> JACK
2) JACK <--> JACK client
From what I've been seeing when I play with the
IRQ, JACK and qjackctl
priorites with chrt and the realtime-preempt kernel, I can
cause the first
type by making the IRQ priority lower than JACK. jackd -v logs this as an
alsa XRUN. The second type is the problem I'm experiencing. Nothing shows in
the jackd -v output, but the client (qjackctl) sees XRUNs - usually a hundred
or so of them every few seconds.
:espeer:
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