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

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To: Paul Davis <paul@...>
Cc: <linux-audio-dev@...>
Date: Tuesday, June 23, 2009 - 6:49 pm

On Tue, 2009-06-23 at 13:12 -0400, Paul Davis wrote:

yes, sorry, I was briefly swallowed into the rtkit-world :-) ...

> which are intended to guarantee that an uncontrollable fork bomb or

I don't know either, hopefully yes.

> to explain why this mechanism

This is what Lennart wrote in his original announcement:

> Why not use cgroups for this? Because it's simply a horrible API, and

Do you have any idea what containers are? No clue here...

It would seem to me that sched-rt-groups (with cgroup support) does
address the problem, but differently. SCHED_RESET_ON_FORK would prevent
the creation of a rt fork bomb, sched-rt-groups + cgroups would just
contain it within the boundaries of the maximum rt time alloted to that
group.

All other issues remain the same (ie: what to do in userland when a
process _is_ eating cpu like crazy). Right?

Yes another issue that has not been raised or explained in the thread
is:

> * Client authorization is verified with PolicyKit

What is verified? User account? Other stuff?

-- Fernando

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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)