Re: [ANNOUNCE] Linux 2.6 Real Time Kernel

[Lee Revell]

On Sat, 2004-10-09 at 13:41, Karim Yaghmour wrote:
> Sven-Thorsten Dietrich wrote:
> >     - Voluntary Preemption by Ingo Molnar
> >     - IRQ thread patches by Scott Wood and Ingo Molnar
> >     - BKL mutex patch by Ingo Molnar (with MV extensions)
> >     - PMutex from Germany's Universitaet der Bundeswehr, Munich
> >     - MontaVista mutex abstraction layer replacing spinlocks with mutexes
> 
> To the best of my understanding, this still doesn't provide deterministic
> hard-real-time performance in Linux.

Using only the VP+IRQ thread patch, I ran my RT app for 11 million
cycles yesterday, with a maximum delay of 190 usecs.  How would this not
satisfy a 200 usec hard RT constraint?

PHB:      "I've looked at your proposal and decided it can't be done"
Dilbert:  "I just did it.  It's working perfectly" 

Lee

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