linux-kernel - Re: New Address Family: Inter Process Networking (IPN)

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Message-ID: <47587F90.8010400@nortel.com>
Date:	Thu, 06 Dec 2007 17:02:40 -0600
From:	"Chris Friesen" <cfriesen@...tel.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Renzo Davoli <renzo@...unibo.it>, linux-kernel@...r.kernel.org
Subject: Re: New Address Family: Inter Process Networking (IPN)

Andi Kleen wrote:

>>On a 1.4GHz P4 I measured a 44% increase in latency between a unix 
>>datagram and a UDP datagram.

> That's weird.

I just reran on a 3.2GHZ P4 running 2.6.11 (Fedora Core 4).  42% latency 
increase.

For stream sockets, unix gives approximately a 62% bandwidth increase 
over tcp.   (Although tcp could probably be tuned to do better than this.)

Chris
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