On Wed, 04 Nov 2009, Tim Blechmann wrote: > > I'm not a developer and cannot really address your specific > > question but for my use of the rt-kernel I put important rt-audio > > files on a 1394 drive and give the 1394 driver higher priorities using > > the IRQ scheduling tools. I don't have any trouble running 2 or 3 1394 > > drives recording and playing back 48 channels in Ardour. > > > > While I agree you should do everything the right way technically in > > the code maybe part of your solution is outside of the app you are > > writing and in the use of these support tools? > > well, if i understand the rt howto correctly, _no_ disc access is > allowed, neither from rt nor from non-rt threads, since it may produce > page faults, which introduce latencies ... I would be supprised if the rt howto states that page-faults in non-rt threads is a critical problem - that would not significantly impact RT performance - atelast not the worst case - it will (as every other system load) impact the average case. so having a non-rt thread reading disk-files to a buffer and a rt-thread processing this buffer should be perfectly fine. hofrat -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
