From owner-freebsd-ia64@FreeBSD.ORG Sun Jul 12 13:18:23 2009 Return-Path: Delivered-To: freebsd-ia64@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0C6F6106564A for ; Sun, 12 Jul 2009 13:18:23 +0000 (UTC) (envelope-from mexas@bristol.ac.uk) Received: from dirg.bris.ac.uk (dirg.bris.ac.uk [137.222.10.102]) by mx1.freebsd.org (Postfix) with ESMTP id BEE7E8FC08 for ; Sun, 12 Jul 2009 13:18:22 +0000 (UTC) (envelope-from mexas@bristol.ac.uk) Received: from seis.bris.ac.uk ([137.222.10.93]) by dirg.bris.ac.uk with esmtp (Exim 4.69) (envelope-from ) id 1MPywd-0007iT-CB for freebsd-ia64@freebsd.org; Sun, 12 Jul 2009 14:18:21 +0100 Received: from mech-cluster238.men.bris.ac.uk ([137.222.187.238]) by seis.bris.ac.uk with esmtp (Exim 4.67) (envelope-from ) id 1MPywc-0001Z9-Mk for freebsd-ia64@freebsd.org; Sun, 12 Jul 2009 14:18:19 +0100 Received: from mech-cluster238.men.bris.ac.uk (localhost.men.bris.ac.uk [127.0.0.1]) by mech-cluster238.men.bris.ac.uk (8.14.3/8.14.3) with ESMTP id n6CDIHcp010425 for ; Sun, 12 Jul 2009 14:18:17 +0100 (BST) (envelope-from mexas@bristol.ac.uk) Received: (from mexas@localhost) by mech-cluster238.men.bris.ac.uk (8.14.3/8.14.3/Submit) id n6CDIHww010424 for freebsd-ia64@freebsd.org; Sun, 12 Jul 2009 14:18:17 +0100 (BST) (envelope-from mexas@bristol.ac.uk) X-Authentication-Warning: mech-cluster238.men.bris.ac.uk: mexas set sender to mexas@bristol.ac.uk using -f Date: Sun, 12 Jul 2009 14:18:17 +0100 From: Anton Shterenlikht To: freebsd-ia64@freebsd.org Message-ID: <20090712131817.GA7494@mech-cluster238.men.bris.ac.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) X-Spam-Score: -1.5 X-Spam-Level: - Subject: kernel options PREEMPTION - good idea? X-BeenThere: freebsd-ia64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the IA-64 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Jul 2009 13:18:23 -0000 ia64 GENERIC kernel config. file doesn't include `options PREEMPTION'. Alpha GENERIC kernel config. file has this warning: # PREEMPTION appears to have a negative impact on stability # (locking related panics) at least on SMP machines. Does the same advice apply to ia64? many thanks -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 928 8233 Fax: +44 (0)117 929 4423