[linux-audio-user] Re: Realtime not working on Debian testing... why?

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To: <linux-audio-user@...>
Date: Tuesday, November 14, 2006 - 7:39 pm

On Tue, Nov 14, 2006 at 07:08:11PM +0100, Julian Hagenauer wrote:

Debian testing current libpam-modules 0.79-4 supports rtprio (I use it).
To be sure just run :

jackd -R -P 70 -d dummy

in another shell launch :

top -H -p `pidof jackd`

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
26812 moino 18 0 21652 21m 3892 S 0 2.1 0:00.01 jackd
26813 moino 18 0 21652 21m 3892 S 0 2.1 0:00.00 jackd
26814 moino 19 0 21652 21m 3892 S 0 2.1 0:00.00 jackd
26815 moino -81 0 21652 21m 3892 S 0 2.1 0:00.00 jackd
26816 moino *-71* 0 21652 21m 3892 S 0 2.1 0:00.00 jackd

If rlimit is not working you won't see a thread at prio -71
Don't be afraid if you don't have the thread at -81 you must have an
old version of jackd.

If you can verify this you can be sure your problem does not come from
rlimit or realtime stuff.
You will have to investigate more.

Goood luck.

PS. If you have a dual core setup I'm not sure your jackd version is patched
against some hw clock drift problems. Do you have the --clocksource
option when you launch jackd -h ?

David.

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Messages in current thread:
Re: [linux-audio-user] Realtime not working on Debian testin..., Glenn Greenfield, (Tue Nov 14, 10:56 pm)
Re: [linux-audio-user] Realtime not working on Debian testin..., Atte André Jensen, (Wed Nov 15, 4:15 pm)
Re: [linux-audio-user] Realtime not working on Debian testin..., Atte André Jensen, (Thu Nov 16, 7:05 am)
Re: [linux-audio-user] Realtime not working on Debian testin..., Glenn Greenfield, (Tue Nov 14, 11:20 pm)
[linux-audio-user] Re: Realtime not working on Debian testin..., David Causse, (Tue Nov 14, 7:39 pm)