Re: [Jack-Devel] Trying to understand jackd's threads

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DateFri, 15 Feb 2013 08:57:06 -0500
From Paul Davis <[hidden] at linuxaudiosystems dot com>
ToaCOSwt <[hidden] at orange dot fr>
Cc[hidden] at lists dot jackaudio dot org
In-Reply-ToaCOSwt [Jack-Devel] Trying to understand jackd's threads
Follow-UpaCOSwt Re: [Jack-Devel] Trying to understand jackd's threads 
On Fri, Feb 15, 2013 at 7:00 AM, aCOSwt <[hidden]> wrote:

> After launching jackd the following way under a linux-3.6.11 :
>
> /usr/bin/jackd -P89 -m -dalsa -dhw:3 -r44100 -p256 -n3 -P -z
>

jackd --version is important here.

chrt as well as ps tell me that I get 5 threads :
>
> - 3 of them following a SCHED_OTHER policy,
>

threads handling server requests and other non-realtime-constrained stuff.


> - 2 of them following a SCHED_FIFO policy,
> The first of these two having an rt-prio of 99 and the other one 89 !
>

the watchdog and message queue threads are higher priority than the
"process" thread which actually does the core work (wait for backend, run
process cycle, repeat).
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