netdev - Re: [PATCH iproute2] Re: HTB accuracy for high speed

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Message-Id: <200905191421.28519.denys@visp.net.lb>
Date:	Tue, 19 May 2009 14:21:28 +0300
From:	Denys Fedoryschenko <denys@...p.net.lb>
To:	Jarek Poplawski <jarkao2@...il.com>
Cc:	Antonio Almeida <vexwek@...il.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	netdev@...r.kernel.org, kaber@...sh.net, davem@...emloft.net,
	devik@....cz, Eric Dumazet <dada1@...mosbay.com>
Subject: Re: [PATCH iproute2] Re: HTB accuracy for high speed

On Tuesday 19 May 2009 14:18:57 Jarek Poplawski wrote:
>
> Sure, if the queue is too short we could have a problem with reaching
> the expected rate; but here it's all backwards - it could actually
> "help" with the stats. ;-)
>
> Jarek P.
Well, i had real experience on HTB, when i set too short buffers on  my QoS 
qdiscs, the incoming rate jumped too high than overall. When i set larger 
buffers (and by the way dropped sfq and use bfifo) - it is dropped.  No idea 
why, bug or specific things in  protocols congestion control. Maybe worth to 
try...

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