On 12/31/2014 01:05 PM, Klaatu wrote:
Does anybody know how exactly the actual lag time achieved is being
calculated? I would like to test my own kernel config to see what I'm
getting.
Hmmm, the tool I know is cyclictest:
https://rt.wiki.kernel.org/index.php/Cyclictest
Some more information here:
http://people.redhat.com/williams/latency-howto/rt-latency-howto.txt
-- Fernando
On 01/01/2015 08:51 AM, Brian Monroe wrote:
> I agree that we need lag to be less than 5ms with no xruns for serious
> musicians. It makes a difference.
>
> I was chatting in #opensourcemusicians about the rt patch issue and someone
> threw this out there:
http://www.funtoo.org/Kernel/configs/realtime
>
> I'm smart enough to get what they're doing, but not smart enough to know if
> this is what we're already doing in Fedora or how it'll affect other
> security concerns. Also the settings listed for /etc/security/limits.conf
> is setting you up for a bad time.
>
> They said they could get less than 1ms with no xruns (except at application
> startup) which sounds promising. Certainly if we're shooting for less than
> 5 ms instead of less than 1ms.