From owner-freebsd-questions@FreeBSD.ORG Sat Mar 13 19:07:24 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4C7E916A4CE for ; Sat, 13 Mar 2004 19:07:24 -0800 (PST) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id E621343D31 for ; Sat, 13 Mar 2004 19:07:23 -0800 (PST) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.10/8.12.10) id i2E37HCl039349; Sat, 13 Mar 2004 21:07:17 -0600 (CST) (envelope-from dan) Date: Sat, 13 Mar 2004 21:07:17 -0600 From: Dan Nelson To: Hugo Message-ID: <20040314030717.GA12978@dan.emsphone.com> References: <17949.212.113.164.104.1079227560.squirrel@mail.6s-gaming.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <17949.212.113.164.104.1079227560.squirrel@mail.6s-gaming.com> X-OS: FreeBSD 5.2-CURRENT X-message-flag: Outlook Error User-Agent: Mutt/1.5.6i cc: freebsd-questions@freebsd.org Subject: Re: single threaded apps on dual cpu's X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 14 Mar 2004 03:07:24 -0000 In the last episode (Mar 14), Hugo said: > I have a doubt. I just read on a forum that a single threaded > application will only use one CPU. Reading ULE's descriptive paper, I > think this is wrong. It IS possible for a single threaded app to use > both CPUs, who are sharing the load amongst themselves, right? A single-threaded app can only run on one CPU, since that's what single-threaded means. On a dual-CPU system, both 4BSD and ULE will run two single-threaded apps simultaneously, one on each CPU. -- Dan Nelson dnelson@allantgroup.com