From owner-freebsd-smp Mon Jan 1 11:24:35 2001 From owner-freebsd-smp@FreeBSD.ORG Mon Jan 1 11:24:33 2001 Return-Path: Delivered-To: freebsd-smp@freebsd.org Received: from peorth.iteration.net (peorth.iteration.net [208.190.180.178]) by hub.freebsd.org (Postfix) with ESMTP id 4844B37B400 for ; Mon, 1 Jan 2001 11:24:33 -0800 (PST) Received: by peorth.iteration.net (Postfix, from userid 1001) id 3515A574D5; Mon, 1 Jan 2001 13:25:08 -0600 (CST) Date: Mon, 1 Jan 2001 13:25:08 -0600 From: "Michael C . Wu" To: "Ashutosh S. Rajekar Asr" Cc: freebsd-smp@freebsd.org Subject: Re: FreeBSD SMP support Message-ID: <20010101132508.A51028@peorth.iteration.net> Reply-To: "Michael C . Wu" Mail-Followup-To: "Michael C . Wu" , "Ashutosh S. Rajekar Asr" , freebsd-smp@freebsd.org References: <3A507780.54341D88@calsoftinc.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <3A507780.54341D88@calsoftinc.com>; from asr@calsoftinc.com on Mon, Jan 01, 2001 at 05:56:40PM +0530 X-PGP-Fingerprint: 5025 F691 F943 8128 48A8 5025 77CE 29C5 8FA1 2E20 X-PGP-Key-ID: 0x8FA12E20 Sender: keichii@peorth.iteration.net Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Mon, Jan 01, 2001 at 05:56:40PM +0530, Ashutosh S. Rajekar Asr scribbled: | I was just wondering about how far the SMP support has reached in | FreeBSD. According to my impression, I feel that FreeBSD has moved away | from the single "GIANT" SMP lock, and uses separate locks for subsystems | like the ISR routines, spl system, etc. This should get preformance | improvements compared to Linux 2.2, which used a single kernel lock, | effectively permitting only one thread (or process) to be in the kernel | at the same time. | | Please correct me if I am wrong, and preferably provide some pointer to | documents pertaining to the same. /usr/src, CVSweb, and -SMP archives. :) -- +------------------------------------------------------------------+ | keichii@peorth.iteration.net | keichii@bsdconspiracy.net | | http://peorth.iteration.net/~keichii | Yes, BSD is a conspiracy. | +------------------------------------------------------------------+ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message