netdev - Re: bizarre network timing problem

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Message-ID: <20071102232332.GA5739@codeblau.de>
Date:	Sat, 3 Nov 2007 00:23:32 +0100
From:	Felix von Leitner <felix-linuxkernel@...e.de>
To:	Rick Jones <rick.jones2@...com>
Cc:	Chuck Ebbert <cebbert@...hat.com>, linux-kernel@...r.kernel.org,
	Netdev <netdev@...r.kernel.org>
Subject: Re: bizarre network timing problem

Thus spake Rick Jones (rick.jones2@...com):
> Past performance is no guarantee of current correctness :)  And over an 
> Ethernet, there will be a very different set of both timings and TCP 
> segment sizes compared to loopback.

> My guess is that you will find setting the lo mtu to 1500 a very 
> interesting experiment.

Setting the MTU on lo to 1500 eliminates the problem and gives me double
digit MB/sec throughput.

Felix
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