Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by default; Desktop/audio RT developers, read this!

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To: Linux Audio Developers List <linux-audio-dev@...>
Date: Monday, June 22, 2009 - 12:01 am

On Sun, 21.06.09 16:06, Fernando Lopez-Lezcano (nando@ccrma.Stanford.EDU) wrote:

>

This is a dep of PA now. Since all major distros adopted PA I'd be
surprised if they wouldn't adopt rtkit too. If things run like they
usually run then this will enter the other distros one cycle past F12.

> > So what does RealtimeKit do that previous solutions didn't do? rtkit

Nothing. Then the call into rtkit will simply fail. Since the rtkit
call is intended to be used as fallback only things will work as well
or badly as they did before rtkit was introduced.

> The question is relevant, I think, as the kernels that I use (Planet

Dunno. I disagree. The primary objective for rtkit is to be able to
run media applications as RT by default, out-of-the-box. I doubt that
this feature matters for legacy distros/kernels.

> > can set that flag when entering SCHED_RR scheduling and this will

Dunno. All processes that want to have rt need to ask rtkit
themselves. (which is the only safe thing to do, only then we get the
credentials properly defined)

> > rtkit enforces limits on the the number of threads/processes/users

Right now you can edit the service startup file and pass them as
command line parameters. Just read the README I linked.

Lennart

--
Lennart Poettering Red Hat, Inc.
lennart [at] poettering [dot] net
http://0pointer.net/lennart/ GnuPG 0x1A015CC4
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Messages in current thread:
[LAD] [ANNOUNCE] Safe real-time on the desktop by default; D..., Lennart Poettering, (Fri Jun 19, 6:13 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 7:42 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Mon Jun 22, 3:56 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 1:32 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 12:58 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 3:50 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Sun Jun 21, 11:40 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 12:10 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 12:47 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Jörn Nettingsmeier, (Mon Jun 22, 9:36 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 9:43 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 6:18 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Sun Jun 21, 11:06 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 12:01 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Mon Jun 22, 3:58 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 1:14 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Wed Jun 24, 3:25 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Wed Jun 24, 5:46 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 12:06 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 3:27 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Sun Jun 21, 11:49 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Krzysztof Foltman, (Tue Jun 23, 11:19 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Dennis Schulmeister, (Tue Jun 23, 7:31 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Tue Jun 23, 4:09 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Sun Jun 21, 10:15 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 1:38 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Mon Jun 22, 6:15 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 6:24 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Mon Jun 22, 7:51 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 8:04 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Mon Jun 22, 9:18 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Mon Jun 22, 11:33 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 11:53 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Tue Jun 23, 12:33 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Krzysztof Foltman, (Mon Jun 22, 4:14 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Krzysztof Foltman, (Mon Jun 22, 4:58 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Mon Jun 22, 6:05 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 3:21 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 3:34 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 4:26 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Sun Jun 21, 11:41 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 12:21 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Jörn Nettingsmeier, (Mon Jun 22, 9:19 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 9:37 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 10:50 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Mon Jun 22, 10:07 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Dennis Schulmeister, (Mon Jun 22, 11:38 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Tue Jun 23, 12:00 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Dennis Schulmeister, (Tue Jun 23, 12:09 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Dennis Schulmeister, (Tue Jun 23, 1:49 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Tue Jun 23, 1:08 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 10:05 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Jörn Nettingsmeier, (Mon Jun 22, 9:47 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 10:02 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Jörn Nettingsmeier, (Tue Jun 23, 8:44 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Tue Jun 23, 4:54 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Tue Jun 23, 6:49 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Tue Jun 23, 8:14 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Fri Jun 26, 5:53 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Tue Jun 23, 10:19 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Wed Jun 24, 3:21 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Wed Jun 24, 3:23 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Wed Jun 24, 4:25 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Stephen Sinclair, (Wed Jun 24, 11:38 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Wed Jun 24, 12:24 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Fernando Lopez-Lezcano, (Fri Jun 26, 5:32 am)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Sun Jun 21, 11:53 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Mon Jun 22, 3:16 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Fri Jun 19, 8:04 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Sun Jun 21, 9:09 pm)
Re: [LAD] [ANNOUNCE] Safe real-time on the desktop by defaul..., Lennart Poettering, (Fri Jun 19, 6:46 pm)