On 02/16/2012 04:33 AM, David Timms wrote:
On 15/02/12 16:49, Brian Monroe wrote:
On Tue, Feb 14, 2012 at 12:21 PM, Brendan Jones brendan.jones.it@gmail.comwrote:
Latency times are really relative things based on many factors. Have you been getting better latency times than ta
yeah.
I would be good to see real numbers associated with claims like the above; also how it is measured..
Cyclictest is widely used for measuring latencies: https://rt.wiki.kernel.org/articles/c/y/c/Cyclictest.html
Also, indicate those various kernel patches and or options they use or have tested.
The rt patches for the latest kernels (3.2 at this point) are here: http://www.kernel.org/pub/linux/kernel/projects/rt/3.2/
This is pretty much all I add to the rt patched kernels for Fedora (with the proper configuration options, of course, I'm attaching the extra options I'm currently using). To get the best performance in the Jack world you need to tune the irq kernel thread priorities, that is usually done using rtirq (http://www.rncbc.org/jack/#rtirq), and of course jackd should run with the proper rt priority as well.
-- Fernando