From owner-freebsd-questions@FreeBSD.ORG Mon Apr 24 22:04:00 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 EDAF416A400 for ; Mon, 24 Apr 2006 22:04:00 +0000 (UTC) (envelope-from maxsec@gmail.com) Received: from wproxy.gmail.com (wproxy.gmail.com [64.233.184.233]) by mx1.FreeBSD.org (Postfix) with ESMTP id 694CC43D5C for ; Mon, 24 Apr 2006 22:04:00 +0000 (GMT) (envelope-from maxsec@gmail.com) Received: by wproxy.gmail.com with SMTP id i12so1108576wra for ; Mon, 24 Apr 2006 15:03:59 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=QM9YAB1N0U4peQIYA7BBPfEll47K/YrrwEmGJnxPR3hf7wqMLXf7o8KY4lHjGLy9vibUt8ekQnSm6H/IlzHXGol345ssb0+nTWtpTzly7stEFwBgARdHA1fwATBv7jRg5V5pseGQDHzVgL/i0S+zIo1IHLqa32qVMiC5UWDfdbQ= Received: by 10.54.156.13 with SMTP id d13mr3550917wre; Mon, 24 Apr 2006 15:03:59 -0700 (PDT) Received: by 10.54.105.15 with HTTP; Mon, 24 Apr 2006 15:03:59 -0700 (PDT) Message-ID: <72cf361e0604241503x6869f8cua7b3ddaa3d70bc4@mail.gmail.com> Date: Mon, 24 Apr 2006 23:03:59 +0100 From: "Martin Hepworth" To: "Bill Moran" In-Reply-To: <20060424154617.9dc28c94.wmoran@potentialtech.com> MIME-Version: 1.0 References: <20060424154617.9dc28c94.wmoran@potentialtech.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-questions@freebsd.org Subject: Re: Purchasing the correct hardware: dual-core intel? Big cache? 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: Mon, 24 Apr 2006 22:04:01 -0000 Bill depends on the application itself, but more RAM and the disk layout (RAID) will be more important than the CPU. Also depends on how write-heavy the apps are... -- martin On 4/24/06, Bill Moran wrote: > > > I've been asked to make some hardware recommendations, I'm hoping some > folks on the list can make some suggestions. > > We're looking hard at getting either Intel dual-core procs, or getting > hyperthreaded procs with huge (8M) caches. > > We currently have a few dual proc Intel HT machines that we can test > out our workload on, and I'm trying to get a feel for how to determine > if a larger cache size will generate better performance than replacing > HT procs with full-blown dual-core procs. We're looking at the 6850 > from Dell, which supports both processor families: > > http://www1.us.dell.com/content/products/productdetails.aspx/pedge_6850?c= =3Dus&cs=3D555&l=3Den&s=3Dbiz > > The goal for these machines is to serve out PosgreSQL databases to as > many Apache+php front ends as we can hang off each one. So we're trying > to purchase hardware that will create a DB server that can handle a lot > of web server front ends. > > I have a Dell 2850 (dual HT procs) here that I can use for testing. > I'm a little fuzzy on determining how well the cache is working, so I'm > stuck on whether or not the 8M cache that's available on the HT units > is worth the money or not. Can anyone suggest a testing methodology > that will isolate this particular aspect? > > -- > Bill Moran > Collaborative Fusion Inc. > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" >