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

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Message-ID: <20090602130857.GA7690@ff.dom.local>
Date:	Tue, 2 Jun 2009 13:08:58 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Antonio Almeida <vexwek@...il.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	netdev@...r.kernel.org, davem@...emloft.net, devik@....cz,
	Eric Dumazet <dada1@...mosbay.com>,
	Vladimir Ivashchenko <hazard@...ncoudi.com>
Subject: Re: [PATCH iproute2] Re: HTB accuracy for high speed

On Tue, Jun 02, 2009 at 02:45:34PM +0200, Patrick McHardy wrote:
> Jarek Poplawski wrote:
>> On Tue, Jun 02, 2009 at 12:45:28PM +0100, Antonio Almeida wrote:
>>> On Tue, Jun 2, 2009 at 11:12 AM, Antonio Almeida wrote:
>>>> I'm getting great values with this patch!
>>>> ...
>>>> I'll get back to you with more values.
>>> The steps are much smaller and the error keeps lower than 1%.
>>> Injecting over 950Mpbs of tcp packets of 800bytes I get these values:
>>
>> Nice values - should be acceptable, I guess. Alas this is not all, and
>> I'll ask you soon for re-testing HFSC (after another patch) or maybe
>> even some simple CBQ setup ;-)
>
> I didn't follow the full discussion, so I'm not sure which kind of
> arithmetic error you're attempting to cure. For the HFSC scaling
> factors, please just keep in mind that its also supposed to be
> very accurate at low bandwidths.

It's all here:

http://permalink.gmane.org/gmane.linux.network/129301

Of course, I'd appreciate any suggestions.

Thanks,
Jarek P.
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