From owner-freebsd-stable@FreeBSD.ORG Sat Jan 8 22:11:24 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4ACE71065679 for ; Sat, 8 Jan 2011 22:11:24 +0000 (UTC) (envelope-from spork@bway.net) Received: from xena.bway.net (xena.bway.net [216.220.96.26]) by mx1.freebsd.org (Postfix) with ESMTP id 136568FC13 for ; Sat, 8 Jan 2011 22:11:23 +0000 (UTC) Received: (qmail 6612 invoked by uid 0); 8 Jan 2011 22:11:23 -0000 Received: from smtp.bway.net (216.220.96.25) by xena.bway.net with (DHE-RSA-AES256-SHA encrypted) SMTP; 8 Jan 2011 22:11:23 -0000 Received: (qmail 6604 invoked by uid 90); 8 Jan 2011 22:11:22 -0000 Received: from unknown (HELO hotlap.nat.fasttrackmonkey.com) (spork@96.57.144.66) by smtp.bway.net with (DHE-RSA-AES256-SHA encrypted) SMTP; 8 Jan 2011 22:11:22 -0000 Date: Sat, 8 Jan 2011 17:11:22 -0500 (EST) From: Charles Sprickman X-X-Sender: spork@hotlap.local To: Dan Langille In-Reply-To: <4D28CB06.8030301@langille.org> Message-ID: References: <4D28CB06.8030301@langille.org> User-Agent: Alpine 2.00 (OSX 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-stable Subject: Re: ZFS - benchmark & tuning before and after doubling RAM 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: Sat, 08 Jan 2011 22:11:24 -0000 On Sat, 8 Jan 2011, Dan Langille wrote: > I've been running a ZFS array for about 10 months on a system with 4GB of > RAM. I'm about to add another 4GB of RAM. > > I think this might be an opportune time to run some simple benchmarks and do > some tuning. Getting more out of the system is not a priority for me. It > does what I need now. However, I do see some merit in writing something up > for others to see/follow/learn. > > The system is running FreeBSD 8.2-PRERELEASE #1: Tue Nov 30 22:07:59 EST 2010 > on a 64 bit box. The ZFS array consists of 7x2TB commodity drives on two > SiI3124 SATA controllers. The OS runs off a gmirror RAID-1. > > More details here: http://www.freebsddiary.org/zfs-benchmark.php > > First, up, I've done a simple bonnie++ benchmark before I add more RAM. I > ran this on two different datasets; one with compression enabled, one > without. > > If anyone has suggestions for various tests, option settings, etc, I'm happy > to run them and include the results. We have lots of time to play with this. iozone is interesting. I bought the excel plugin from the developer to generate the nice 3D graphs. I'd love to put some of my graphs up somewhere for comparison... It's a very time-consuming test though. Charles > -- > Dan Langille - http://langille.org/ > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >