Re: [RFC][PATCH] Multimedia scheduling class, take 2

From: Henrik Austad <henrik@austad.us>
To: Jussi Laako <jussi@sonarnerd.net>
Cc: Peter Zijlstra <peterz@infradead.org>,
	James Courtier-Dutton <James@superbug.co.uk>,
	linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>
Subject: Re: [RFC][PATCH] Multimedia scheduling class, take 2
Date: Tue, 12 May 2009 11:40:02 +0200	[thread overview]
Message-ID: <20090512094002.GA26113@januz.myftp.org> (raw)
In-Reply-To: <4A07E044.8040807@sonarnerd.net>

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On Mon, May 11, 2009 at 11:22:28AM +0300, Jussi Laako wrote:
> Hi,
> 
> Peter Zijlstra wrote:
> [..]
> > And 2), the kernel can help by providing a deadline based scheduler,
> > which should make the above easier and less likely to mess up the rest
> > of the system. ie. a deadline scheduled application will not exceed its
> > allotted budget, unlike a FIFO scheduled app.
> 
> Any news on this one?

I'm still working on my SCHED_PFAIR stab. Expect an RFC someday soon

pfair is a deadline-driven algorithm that also executes the tasks at a 
steady rate, minimizing jitter as well as meeting deadlines. This give 
tasks better expressiveness when it comes to instructing the scheduler how 
to treat the task. I'll give a more formal intro in the upcoming RFC :)

-- 
henrik

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