grae wrote:
Well I'm currently testing this to be sure but I think my issue is
with the "priority" setting of jackd, apparently is has to be above
50?
Currently from the ubuntu repository it defaults to 0 (I
think...maybe I changed it but not sure why I would) and makes me
wonder what use it is having a value like that. Is there any time
that a person would want a priority of zero, or anything less than the
"magical" number of 50? Again, I don't know much about all this stuff
so I'm always trying to piece it together as I go.
The magic in this number is that this is the default value assigned to
threaded IRQ handlers (at least on my system by rtirq). This means that
when you run jackd with a priority higher than 50, it won't be
interrupted by hardware interrupts from e.g. vga devices or harddisks.
Note that it is best to make sure that the IRQ handler of your ohci1394
card is higher than the priority you run jack with (I make it 90).
see:
http://freebob.sourceforge.net/index.php/IRQ_Threading_and_Priorities
Another tip: due to libfreebob internals, it is better to use 3 smaller
periods instead of 2 larger, e.g. -n3 -p256 will probably work better
than -n2 -p512.
Anyway, I've been trying for a long time to get a good linux audio
setup and I think I've finally done it! Thanks to everyone who works
so hard on all this great software. :)
you're welcome ;)
Pieter Palmers
FreeBoB developer
