30 May
2012
30 May
'12
4:37 p.m.
Hi List,
i switched my system to use jack2 (1.9.8). As i wanted to make sure,
that SCHED_FF is used and threads got the right priority i took a look
at ps:
I can see, that jackd includes now 4 threads. Only one of them is using
SCHED_FF with higher priority. Is that correct?
regards,
Mathias
XS Embedded GmbH
Peterzeller Strasse 8
D-78048 Villingen - Schwenningen
Telefon +49 (7721) 4060 - 478
Fax +49 (7721) 4060 - 499
www.xse.de
Mathias.Krause(a)xse.de
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5 Jun
5 Jun
10:17 a.m.
Hi List,
[sorry for last posting, including signature ... hopefully, this time it will not be
there...]
i switched my system to use jack2 (1.9.8). As i wanted to make sure, that SCHED_FF is used
and threads got the right priority i took a look at ps:
I can see, that jackd includes now 4 threads. Only one of them is using SCHED_FF with
higher priority. Is that correct?
regards,
Mathias
1:03 p.m.
On 06/05/2012 10:17 AM, Krause, Mathias wrote:
Hi List,
[sorry for last posting, including signature ... hopefully, this time it will not be
there...]
i switched my system to use jack2 (1.9.8). As i wanted to make sure, that SCHED_FF is
used and threads got the right priority i took a look at ps:
I can see, that jackd includes now 4 threads. Only one of them is using SCHED_FF with
higher priority. Is that correct?
regards,
Mathias
Only the audio-engine is supposed to have elevated priority. The other
threads are for logging, dbus communication... and similar non-realtime
tasks that are not supposed to interfere with audio performance.
Here jackdbus 1.9.8 - starts 7 threads by default. Only one with
SCHED_FF and the given RT priority, but three others that use SCHED_FF
as well. USTL or ask on jack-devel.
---------------------------------------------------
#ps -ALo pid,class,rtprio,pri,stat,comm | grep jackd
29450 TS - 19 SLsl jackdbus
29450 FF 1 41 SLsl jackdbus
29450 FF 1 41 SLsl jackdbus
29450 FF 1 41 SLsl jackdbus
29450 TS - 19 SLsl jackdbus
29450 TS - 19 SLsl jackdbus
29450 FF 70 110 SLsl jackdbus
---------------------------------------------------
jackd 1.9.9 without dbus spawns 4 threads:
---------------------------------------------------
# ps -ALo pid,class,rtprio,pri,stat,comm | grep jackd
5966 TS - 19 SLsl jackd
5966 TS - 19 SLsl jackd
5966 FF 10 50 SLsl jackd
5966 TS - 19 SLsl jackd
---------------------------------------------------
ciao,
robin
4835
days inactive
4841
days old
linux-audio-user@lists.linuxaudio.org
2 comments
3 participants
participants (3)
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Krause, Mathias -
mkrause -
Robin Gareus