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

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Message-ID: <20090512094002.GA26113@januz.myftp.org>
Date:	Tue, 12 May 2009 11:40:02 +0200
From:	Henrik Austad <henrik@...tad.us>
To:	Jussi Laako <jussi@...arnerd.net>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	James Courtier-Dutton <James@...erbug.co.uk>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>
Subject: Re: [RFC][PATCH] Multimedia scheduling class, take 2

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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