linux-kernel - Unix sockets via TCP on localhost: is TCP slower?

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Message-ID: <b2cc26e40811121520k711fa702u85e53bbc18b021a0@mail.gmail.com>
Date:	Thu, 13 Nov 2008 00:20:44 +0100
From:	"Olaf van der Spek" <olafvdspek@...il.com>
To:	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Unix sockets via TCP on localhost: is TCP slower?

Hi,

Quite often in discussions, I see people claiming Unix sockets are
faster then TCP sockets on a connection that stays inside localhost.
Let's say from app A to app B.
Is this indeed the case and if so, how much and why?
My assumption is that the kernel can optimize the 'connection' and let
any performance differences disappear.

Greetings,

Olaf
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