From owner-freebsd-sparc64@FreeBSD.ORG Thu Sep 9 15:29:18 2004 Return-Path: Delivered-To: freebsd-sparc64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AC59E16A4CE for ; Thu, 9 Sep 2004 15:29:18 +0000 (GMT) Received: from mail4.speakeasy.net (mail4.speakeasy.net [216.254.0.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id 869A743D41 for ; Thu, 9 Sep 2004 15:29:18 +0000 (GMT) (envelope-from jhb@FreeBSD.org) Received: (qmail 8819 invoked from network); 9 Sep 2004 15:29:18 -0000 Received: from dsl027-160-063.atl1.dsl.speakeasy.net (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) encrypted SMTP for ; 9 Sep 2004 15:29:17 -0000 Received: from [10.50.40.210] (gw1.twc.weather.com [216.133.140.1]) (authenticated bits=0) by server.baldwin.cx (8.12.11/8.12.11) with ESMTP id i89FT93X007884; Thu, 9 Sep 2004 11:29:15 -0400 (EDT) (envelope-from jhb@FreeBSD.org) From: John Baldwin To: freebsd-sparc64@FreeBSD.org Date: Thu, 9 Sep 2004 11:29:11 -0400 User-Agent: KMail/1.6.2 References: <20040909121246.GC17338@electra.cse.Buffalo.EDU> In-Reply-To: <20040909121246.GC17338@electra.cse.Buffalo.EDU> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200409091129.11979.jhb@FreeBSD.org> X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on server.baldwin.cx cc: Ken Smith Subject: Re: HEADS-UP: Be careful with newest GENERIC... X-BeenThere: freebsd-sparc64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the Sparc List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Sep 2004 15:29:18 -0000 On Thursday 09 September 2004 08:12 am, Ken Smith wrote: > I'm having mixed results with the new GENERIC which switches the > default scheduler to 4BSD and turns on PREEMPTION. It's fine > with the 4BSD scheduler but PREEMPTION seems to be causing some > problems on a few of my machines. > > If you give PREEMPTION a try I'd be interested in hearing if it's > successful or not. I'm wondering if I'm just "lucky" and it's > OK for everyone else or if it's causing other people problems too. sparc64 has never run with preemption on before (it never had the older ithread preemption turned on) so it is probably not safe to use yet. I would recommend turning it off until someone's had a chance to look at the low-level interrupt code to see if it's ready for preemption. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org