From owner-freebsd-smp@FreeBSD.ORG Thu Aug 16 15:55:58 2007 Return-Path: Delivered-To: freebsd-smp@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 35DB216A46B; Thu, 16 Aug 2007 15:55:58 +0000 (UTC) (envelope-from johan@stromnet.se) Received: from av9-2-sn3.vrr.skanova.net (av9-2-sn3.vrr.skanova.net [81.228.9.186]) by mx1.freebsd.org (Postfix) with ESMTP id 6DCE313C45B; Thu, 16 Aug 2007 15:55:56 +0000 (UTC) (envelope-from johan@stromnet.se) Received: by av9-2-sn3.vrr.skanova.net (Postfix, from userid 502) id 90E7138417; Thu, 16 Aug 2007 17:55:55 +0200 (CEST) Received: from smtp3-1-sn3.vrr.skanova.net (smtp3-1-sn3.vrr.skanova.net [81.228.9.101]) by av9-2-sn3.vrr.skanova.net (Postfix) with ESMTP id 619F737F95; Thu, 16 Aug 2007 17:55:55 +0200 (CEST) Received: from phomca.stromnet.se (90-224-172-102-no129.tbcn.telia.com [90.224.172.102]) by smtp3-1-sn3.vrr.skanova.net (Postfix) with ESMTP id 24DB037E6C; Thu, 16 Aug 2007 17:55:55 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by phomca.stromnet.se (Postfix) with ESMTP id EB82CB826; Thu, 16 Aug 2007 17:55:54 +0200 (CEST) X-Virus-Scanned: amavisd-new at stromnet.se Received: from phomca.stromnet.se ([127.0.0.1]) by localhost (phomca.stromnet.se [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id myiSSUbyAlCb; Thu, 16 Aug 2007 17:55:51 +0200 (CEST) Received: from [172.28.1.102] (jstrom-mb.stromnet.se [172.28.1.102]) by phomca.stromnet.se (Postfix) with ESMTP id D3681B824; Thu, 16 Aug 2007 17:55:51 +0200 (CEST) In-Reply-To: <20070816152050.GA34616@cons.org> References: <7A201B4E-9B61-4074-93B9-42BD23B35AA9@stromnet.se> <20070815153800.GA28807@cons.org> <4835BBD0-5FA9-4DE3-A60D-B7D04628B229@stromnet.se> <20070816152050.GA34616@cons.org> Mime-Version: 1.0 (Apple Message framework v752.3) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <49E780C3-8AD7-4B59-96E7-FEAF05370E62@stromnet.se> Content-Transfer-Encoding: 7bit From: =?ISO-8859-1?Q?Johan_Str=F6m?= Date: Thu, 16 Aug 2007 17:55:50 +0200 To: Martin Cracauer X-Mailer: Apple Mail (2.752.3) Cc: freebsd-smp@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: Single Core2Duo Quadcore vs. two dualcore Xeon? X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD SMP implementation group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Aug 2007 15:55:58 -0000 On Aug 16, 2007, at 17:20 , Martin Cracauer wrote: > >> The Xeon Quad core just got a major price reduction though, so now >> I'm looking at a dual quad xeon (with 5320, 1.68Ghz or 5330 2.0GHz) >> instead... > > You still have to weight whether there is any application that you > need that is not multithreaded. Well the most load (at least from the current situation) will probably be mysql, and apache with mod_php. And that should be pretty multithreaded.. > >> The "default" mobo at the supplier (www.mullet.se) uses the X7DVL-i >> board, which takes 6 FB-DIMMs on two channels (max out at 16 gig).. > > That math doesn't play. Thats what the specs says.. 6 dimm sockets, altough it actually doesnt say anything about number of channels, that was from Mullets site. mobo spec says 16 gig max. > >> But I'm thinking about getting the upgrade mobo instead, X7BDE, with >> 8 slots on 4 channels with max 32GB (and also full KVM features in >> the IPMI slot..) >> >> But I'm curious if this kind of platform will ever be able to use all >> this? Disk access, memory bus & cpu etc.. lets asume I max this >> system in the future with 32 gigs of mem and 8 2ghz cores.. Will I >> ever be able to use that much with a raid5 (or 10, whats the lists >> opinion on this? 5 or 10?) config on a PCI-X slot? > > Much of ... what? > > I can't parse this sentence. Hehe.. I'll give it another try :) If I push the system to the max cpu/memory wise, will I ever make any use of 8cores each 2Ghz? Memory can always be used I guess.. > > For a pure fileserver all this is overkill. Oh yes, no this is not a fileserver. Mainly web hosting (combined mysql/php) > >> But realistically, for a php,mysql,apache,java etc machine with a >> number of jails, i wonder if I will ever be able to use this much >> power or if I should aim lower and if the box gets too loaded I'll >> get another one.. > > The moment php and Java are involved you are not strictly disk-bound > anymore :-) Very true.. It would be the mysql processes that would be limited. Johan