linux-kernel - Re: [ANNOUNCE/RFC] Really Fair Scheduler

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Message-ID: <Pine.LNX.4.64.0709021634370.1817@scrub.home>
Date:	Sun, 2 Sep 2007 16:47:33 +0200 (CEST)
From:	Roman Zippel <zippel@...ux-m68k.org>
To:	Daniel Walker <dwalker@...sta.com>
cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, peterz@...radead.org
Subject: Re: [ANNOUNCE/RFC] Really Fair Scheduler

Hi,

On Sat, 1 Sep 2007, Daniel Walker wrote:

> Out of curiosity I was reviewing your patch .. Since you create
> kernel/sched_norm.c as a copy of kernel/sched_fair.c it was hard to see
> what had changed .. So I re-diffed your patch to eliminate
> kernel/sched_norm.c and just make the changes to kernel/sched_fair.c .. 

I mainly did it this way to avoid annoying conflicts. I also started with 
a copy where I threw out everything but a basic skeleton and than just 
copied the stuff I needed.

> > (1)	time = sum_{t}^{T}(time_{t})
> > (2)	weight_sum = sum_{t}^{T}(weight_{t})
> 
> I read your description, but I was distracted by this latex style
> notation .. Could you walk through in english what these two equation
> are doing ..

T is the number of tasks, so the first is the sum of the time every task 
gets over a period of time and the second is the sum of all weights of 
each task.

bye, Roman
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