From owner-freebsd-hackers@FreeBSD.ORG Wed Mar 31 23:10:15 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9B5D716A4CE for ; Wed, 31 Mar 2004 23:10:15 -0800 (PST) Received: from transport.cksoft.de (transport.cksoft.de [62.111.66.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id DFB1143D2D for ; Wed, 31 Mar 2004 23:10:14 -0800 (PST) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from transport.cksoft.de (localhost [127.0.0.1]) by transport.cksoft.de (Postfix) with ESMTP id DE1581FF9A7 for ; Thu, 1 Apr 2004 09:10:12 +0200 (CEST) Received: by transport.cksoft.de (Postfix, from userid 66) id E4C401FF9A6; Thu, 1 Apr 2004 09:10:10 +0200 (CEST) Received: by mail.int.zabbadoz.net (Postfix, from userid 1060) id 6E05E154E3; Thu, 1 Apr 2004 07:10:04 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.int.zabbadoz.net (Postfix) with ESMTP id 639E6154DF for ; Thu, 1 Apr 2004 07:10:05 +0000 (UTC) Date: Thu, 1 Apr 2004 07:10:05 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@e0-0.zab2.int.zabbadoz.net To: freebsd-hackers@freebsd.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Virus-Scanned: by AMaViS cksoft-s20020300-20031204bz on transport.cksoft.de Subject: implications of SMP kernel on UP X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Apr 2004 07:10:15 -0000 Hi, what are the implications on running an SMP enabled kernel on a UP machine ? I first thought of things like: - performence (most likely not worth the discussion ?) - additional locking problematic ? - ... ? Or asked the other way round: why would I want to disable SMP on a kernel that is going to run on a UP machine ? -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT 56 69 73 69 74 http://www.zabbadoz.net/