From owner-freebsd-questions@FreeBSD.ORG Wed Mar 22 09:04:42 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org 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 794D916A423 for ; Wed, 22 Mar 2006 09:04:42 +0000 (UTC) (envelope-from riemer@palstra.com) Received: from palstra.com (palstra.com [82.201.5.23]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1878A43D46 for ; Wed, 22 Mar 2006 09:04:42 +0000 (GMT) (envelope-from riemer@palstra.com) Received: from riemer by palstra.com with local (Exim 4.60 (FreeBSD)) (envelope-from ) id 1FM0F9-0001hY-1A; Wed, 22 Mar 2006 10:07:07 +0000 Date: Wed, 22 Mar 2006 10:07:07 +0000 From: Riemer Palstra To: Ian Lord Message-ID: <20060322100706.GB90763@rb1.palstra.com> References: <7.0.0.16.2.20060321141823.03985008@msdi.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7.0.0.16.2.20060321141823.03985008@msdi.ca> User-Agent: Mutt/1.4.2.1i Cc: freebsd-questions@freebsd.org Subject: Re: Kernel settings for Dell 1850 and 2850 with 4GB of ram X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Mar 2006 09:04:42 -0000 On Tue, Mar 21, 2006 at 02:57:15PM -0500, Ian Lord wrote: > I am currently running freebsd 6 (amd64) on dells servers that have > dual xeon processors in them. There is also 4 gigs of ram in them. Your mileage may vary, but this is what I run on some Dedicated Dell 1850s which have quite some heavy MySQL usage: > Could someone tell me: > > 1- What is the cpu I need to specify in my config ? I generally go with just 'i686'. > 2- Do I need to run PAE to have access to all my 4 gigs of ram ? Yes. (On a 1850, I only got +/- 3 GB with PAE off). > 3- Should I use ULE or 4BSD has my threading model ? (I currently run > ULE but it seems it's slower then 4BSD for the posts in that forum) I still tend to stay away from ULE from production machines, my last testing on 6.0 with it still showed signs of it being somewhat slower. This may have changed for the upcoming 6.1, haven't tested that yet. > 4- What threading should I use in mysql for better stability and > performance (generic or ?) I use libthr. It performs slightly better than default for the situations I use it in (which is mainly database powered websites and such). -- Riemer Palstra Amsterdam, The Netherlands riemer@palstra.com http://www.palstra.com/