netdev - Re: HTB accuracy for high speed

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Message-ID: <20090518111411.GB11162@ff.dom.local>
Date:	Mon, 18 May 2009 11:14:11 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Antonio Almeida <vexwek@...il.com>
Cc:	netdev@...r.kernel.org, kaber@...sh.net, davem@...emloft.net,
	devik@....cz
Subject: Re: HTB accuracy for high speed

On Mon, May 18, 2009 at 11:39:02AM +0100, Antonio Almeida wrote:
> Hi!
> 
> Here the information you asked:

Very nice, but there are some questions:
- if this analyser uses tcp we definitely need tso off as well during
  these tests,
- it would be nice to use two patches I've sent to exclude known (now)
  reasons.

With the above I expect accuracy should be better, but definitely not
like hfsc (plus no higher than 1000Mbit rate reported after stopping
effect).

Thanks,
Jarek P.

> 
> # ethtool -k eth0
> Offload parameters for eth0:
> rx-checksumming: on
> tx-checksumming: on
> scatter-gather: on
> tcp segmentation offload: on
> udp fragmentation offload: off
> generic segmentation offload: off
> 
> # ethtool -k eth1
> Offload parameters for eth1:
> rx-checksumming: on
> tx-checksumming: on
> scatter-gather: on
> tcp segmentation offload: on
> udp fragmentation offload: off
> generic segmentation offload: off
> 
> The bridge is between eth0 and eth1
...
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