netdev - Re: [PATCH 0/2] netem: trace enhancement

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Message-ID: <47559455.1080009@ee.ethz.ch>
Date:	Tue, 04 Dec 2007 18:54:29 +0100
From:	Ariane Keller <ariane.keller@....ee.ethz.ch>
To:	Ben Greear <greearb@...delatech.com>
CC:	Ariane Keller <ariane.keller@....ee.ethz.ch>,
	Patrick McHardy <kaber@...sh.net>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	netdev@...r.kernel.org, herbert@...dor.apana.org.au,
	Rainer Baumann <baumann@....ee.ethz.ch>
Subject: Re: [PATCH 0/2] netem: trace enhancement

I thought about that as well, but in my opinion this does not help much.
It's the same as before: in average every 10ms a new buffer needs to be 
filled.


Ben Greear wrote:
> Ariane Keller wrote:
>>
>> Increasing the cache size to say 32k for each buffer would be no problem.
>> Is this enough?
> Maybe just a variable length list of 4k buffers chained together?  Its 
> usually easier
> to get 4k chunks of memory than 32k chunks, especially under high 
> network load,
> and if you go ahead an make it arbitrary length, then each user can 
> determine how many
> they want to have queued...
> 
> Thanks,
> Ben
> 
> 
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