netdev - Re: [PATCH] sched: QFQ - quick fair queue scheduler (v2)

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Message-ID: <20110302020610.GD1005@gandalf.sssup.it>
Date:	Wed, 2 Mar 2011 03:06:10 +0100
From:	Fabio Checconi <fchecconi@...il.com>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	David Miller <davem@...emloft.net>,
	Luigi Rizzo <rizzo@....unipi.it>, netdev@...r.kernel.org
Subject: Re: [PATCH] sched: QFQ - quick fair queue scheduler (v2)

Hi,

> From: Stephen Hemminger <shemminger@...tta.com>
> Date: Mon, Feb 28, 2011 05:17:38PM -0800
>
> This is an implementation of the Quick Fair Queue scheduler developed
> by Fabio Checconi. The same algorithm is already implemented in ipfw
> in FreeBSD. Fabio had an earlier version developed on Linux, I just
> cleaned it up and tested it. All bugs are mine.
> 

  thanks for posting, I'm pretty sure that bugs are more likely to be
ours than yours :)

During the development of the algorithm we used a simple traffic
simulator to verify (informally) the timestamping and the guarantees
provided.  I've tested this version of the code with the simulator and
so far it worked fine, so I think that timestamping and guarantees should
be OK.

Please let us know if we can be of any help,
fabio
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