From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754865Ab2B0TFs (ORCPT ); Mon, 27 Feb 2012 14:05:48 -0500 Received: from shards.monkeyblade.net ([198.137.202.13]:35378 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754281Ab2B0TFq (ORCPT ); Mon, 27 Feb 2012 14:05:46 -0500 Date: Mon, 27 Feb 2012 14:05:35 -0500 (EST) Message-Id: <20120227.140535.1623396420455657443.davem@davemloft.net> To: javier.martinez@collabora.co.uk Cc: javier@collabora.co.uk, eric.dumazet@gmail.com, lennart@poettering.net, kay.sievers@vrfy.org, alban.crequy@collabora.co.uk, bart.cerneels@collabora.co.uk, rodrigo.moya@collabora.co.uk, sjoerd.simons@collabora.co.uk, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/10] af_unix: add multicast and filtering features to AF_UNIX From: David Miller In-Reply-To: <4F4B8C66.5060206@collabora.co.uk> References: <1329753455-1106-1-git-send-email-javier@collabora.co.uk> <20120224.153616.117399887784547022.davem@davemloft.net> <4F4B8C66.5060206@collabora.co.uk> X-Mailer: Mew version 6.4 on Emacs 23.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (shards.monkeyblade.net [198.137.202.13]); Mon, 27 Feb 2012 11:05:39 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Javier Martinez Canillas Date: Mon, 27 Feb 2012 15:00:06 +0100 > Primary for performance reasons. D-bus is an IPC system for processes in > the same machine so traversing the whole TCP/IP stack seems a little > overkill to me. You haven't actually tested what the cost of this actually is, so what you're saying is mere speculation. In many cases TCP/UDP over loopback is actually faster than AF_UNIX. Since this is the premise of your whole rebuttal, I'll simply stop reading here.