[LAU] jackd thinks it's got realtime priority, but it doesn't

Paul Davis paul at linuxaudiosystems.com
Sat Mar 16 13:03:51 UTC 2013


On Sat, Mar 16, 2013 at 8:49 AM, Paul Coccoli <pcoccoli at gmail.com> wrote:

> I just noticed this on my Fedora 17 system.  I run jackd like this:
>

you've fallen for a classic mistake when using ps(1) on multithreaded
applications.

[paul at watt ~]$ ps -p 20370 -o cmd,class,pri,rtprio
> CMD                         CLS PRI RTPRIO
> /usr/bin/jackd --realtime - TS   19      -
>

jackd runs more than one thread. your use of ps(1) shows only the initial
thread, which is not RT.

--p
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