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

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Message-ID: <20110302081108.689571d8@nehalam>
Date:	Wed, 2 Mar 2011 08:11:08 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Fabio Checconi <fchecconi@...il.com>,
	David Miller <davem@...emloft.net>,
	Luigi Rizzo <rizzo@....unipi.it>, netdev@...r.kernel.org
Subject: Re: [PATCH] sched: QFQ - quick fair queue scheduler (v2)

On Wed, 02 Mar 2011 12:17:47 +0100
Eric Dumazet <eric.dumazet@...il.com> wrote:

> Le mercredi 02 mars 2011 à 03:06 +0100, Fabio Checconi a écrit :
> > 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
> 
> Hmm, I tried to setup QFQ (using iproute2patch
> http://patchwork.ozlabs.org/patch/77902/ ) but failed
> 
> Do you have a link to a script/sample ?
> 
> Thanks

I put the iproute2 code into the repository in the experimental branch.

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