From owner-freebsd-stable@FreeBSD.ORG Tue May 24 19:07:39 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8916A16A41C for ; Tue, 24 May 2005 19:07:39 +0000 (GMT) (envelope-from fcash@ocis.net) Received: from imap.sd73.bc.ca (smtp.sd73.bc.ca [142.24.13.149]) by mx1.FreeBSD.org (Postfix) with ESMTP id 43D7443D49 for ; Tue, 24 May 2005 19:07:39 +0000 (GMT) (envelope-from fcash@ocis.net) Received: from localhost (localhost [127.0.0.1]) by localhost.sd73.bc.ca (Postfix) with ESMTP id E739B18CCC8 for ; Tue, 24 May 2005 12:07:38 -0700 (PDT) Received: from imap.sd73.bc.ca ([127.0.0.1]) by localhost (mailtest.sd73.bc.ca [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 68957-01-49 for ; Tue, 24 May 2005 12:07:36 -0700 (PDT) Received: from s9.sbo (s9.sbo [192.168.0.9]) by imap.sd73.bc.ca (Postfix) with ESMTP id AAFBA18CCC6 for ; Tue, 24 May 2005 12:07:36 -0700 (PDT) From: Freddie Cash To: freebsd-stable@freebsd.org Date: Tue, 24 May 2005 12:07:35 -0700 User-Agent: KMail/1.8 References: <429374DB.90407@pobox.sk> In-Reply-To: <429374DB.90407@pobox.sk> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200505241207.35873.fcash@ocis.net> X-Virus-Scanned: by amavisd-new using ClamAV at sd73.bc.ca Subject: Re: Performance of 4.x vs 5.x (Re: Lifetime of FreeBSD branches) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 May 2005 19:07:39 -0000 On May 24, 2005 11:39 am, martinko wrote: > Kris Kennaway wrote: > > Also try defining PREEMPTION in your kernel on 5.x and above (if you > > are running i386 or amd64). There have been very occasional reports > > of panics with this option enabled (although I use it everywhere and > > have not seen problems on my heavily loaded machines), but interactive > > response should be much better. > i cannot find (a description of) PREEMPTION in NOTES or GENERIC (on 5.4 > on i386). > am i missing something? There are two NOTES files for each CPU architecture. One is for the CPU architecture dependent items and is located at /usr/src/sys//conf/NOTES Just replace with the CPU architecture (i386, amd64, etc). The other is for items that apply to all CPU architectures, and is located at /usr/src/sys/conf/NOTES. You have to read both. The PREEMPTION option is in the second file above. -- Freddie Cash fcash@ocis.net