linux-kernel - Re: 2.6.18-rt1

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Date:	Mon, 25 Sep 2006 11:53:28 +0200
From:	Florian Schmidt <mista.tapas@....net>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	John Stultz <johnstul@...ibm.com>,
	"Paul E. McKenney" <paulmck@...ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: 2.6.18-rt1

On Wednesday 20 September 2006 16:19, Ingo Molnar wrote:
> I'm pleased to announce the 2.6.18-rt1 tree, which can be downloaded
> from the usual place:
>
>    http://redhat.com/~mingo/realtime-preempt/
>
> This port to the 2.6.18 codebase was very complex (given that 5 major
> features moved from -rt into 2.6.18: rtmutex, pi-futex, genirq, gtod and
> lockdep), so it took quite some time to finish, but in exchange it
> includes nice new features and also lots of bugfixes.

Hi, i tried 2.6.18-rt3 on my athlon 1.2ghz box and it builds and boots just 
fine (tried complete preemption, hi res timers and tickless kernel). I see 
some rather strange hi-level problems though:


- I haven't built the realtime lsm yet, nor does debian have rt_limits support 
for pam (i think, and even if it does i haven't set it up as i use rt-lsm). I 
can run jackd in realtime mode without problems though. This is very strange. 
As if no capabilities checkign is done.

- I cannot log into X through gdm, as it seems that independent of what kind 
of session i select X dies right after login. I need to startx from the 
console. I wouldn't know where to look for more info on this though.

- Switching from X to another virtual console takes ca. 20 seconds in which 
nothing happens, the screen locks, but the mouse cursor is still movable, 
then finally it switches to the console allright.

.config attached

Besides these problems it ran very well for the hours i had it up. Nothing 
suspicious in the logs. Will try another build with more aggressive debugging 
options.

Regards,
Flo

-- 
Palimm Palimm!
http://tapas.affenbande.org

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