netdev - Re: Poor TCP bandwidth between network namespaces

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Message-ID: <20130204225227.GC6898@order.stressinduktion.org>
Date:	Mon, 4 Feb 2013 23:52:27 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Emmanuel Jeanvoine <emmanuel.jeanvoine@...ia.fr>
Cc:	netdev@...r.kernel.org
Subject: Re: Poor TCP bandwidth between network namespaces

On Mon, Feb 04, 2013 at 03:43:20PM +0100, Emmanuel Jeanvoine wrote:
> I'm wondering why the overhead is so high when performing TCP 
> transfers between two network namespaces. Do you have any idea about 
> this issue? And possibly, how to increase the bandwidth (without 
> modifying the MTU on the veths) between network namespaces?

You could try Eric's patch (already in net-next) and have a look at the rest
of the discussion:

http://article.gmane.org/gmane.linux.network/253589

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