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: -- #include http://www.peer.co.za/~espeer/disclaimer.html
