Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756464AbYKNAWz (ORCPT ); Thu, 13 Nov 2008 19:22:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756416AbYKNAWh (ORCPT ); Thu, 13 Nov 2008 19:22:37 -0500 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:57918 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756533AbYKNAWg (ORCPT ); Thu, 13 Nov 2008 19:22:36 -0500 Date: Thu, 13 Nov 2008 16:22:33 -0800 (PST) Message-Id: <20081113.162233.39564490.davem@davemloft.net> To: jrm8005@gmail.com Cc: olafvdspek@gmail.com, linux-kernel@vger.kernel.org Subject: Re: Unix sockets via TCP on localhost: is TCP slower? From: David Miller In-Reply-To: <3aaafc130811131619w3ba48a86u6c6e2af35f149bf1@mail.gmail.com> References: <3aaafc130811131619w3ba48a86u6c6e2af35f149bf1@mail.gmail.com> X-Mailer: Mew version 6.1 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 827 Lines: 19 From: "J.R. Mauro" Date: Thu, 13 Nov 2008 19:19:36 -0500 > On Wed, Nov 12, 2008 at 6:20 PM, Olaf van der Spek wrote: > > Hi, > > > > Quite often in discussions, I see people claiming Unix sockets are > > faster then TCP sockets on a connection that stays inside localhost. > > Unix domain sockets should be faster because they're not subject to > windowing, ACKs, flow control, encapsulation, etc. etc. And the wakeup rate is higher for TCP, and our process scheduler has been getting gradually slower and slower over time since 2.6.22 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/