[linux-audio-user] MOre realtime!
Johannes Mario Ringheim
jri at broadpark.no
Wed Dec 20 12:34:05 EST 2006
J M Needham wrote:
> Hi all,
> So I've just installed Ubuntu 6.09, and followed the instructions on
> http://fort2.xdas.com/~kor/oss2jack/install.html to install the
> realtime-lsm module and I've added
> @audio - rtprio 80
> @audio - memlock 500000
> to /etc/security/limits.conf and set the realtime mode on Jack. Seems ok,
> the only thing is that I can't get below 5.8 ms latency. Jack's behaving
> nicely with very few xruns, but won't do any better. The output of the
> messages with 32 frames for capture, for example, is:
One quick tip:
I just recently installed 6.10 (wich I guess you are referring to..?),
and discovered a hackish-but-working method of getting RT in Ubuntu:
Install the 64studio multimedia-kernel package. Works great here, I now
got a rock steady 2.9ms on an el crap'o laptop soundcard, running with
Beryl and Emerald! Didn't need to edit limits.conf.
Now beat that, Windows...
You won't get all modules etc from the ubuntu kernel, so if you need any
of those that might require some more hacking.
Ringheims Auto - Fri musikk for bilstereo!
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