From owner-freebsd-stable@FreeBSD.ORG Sat Jan 8 22:02:01 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 60F60106564A for ; Sat, 8 Jan 2011 22:02:01 +0000 (UTC) (envelope-from m.e.sanliturk@gmail.com) Received: from mail-iy0-f182.google.com (mail-iy0-f182.google.com [209.85.210.182]) by mx1.freebsd.org (Postfix) with ESMTP id 2656C8FC08 for ; Sat, 8 Jan 2011 22:02:00 +0000 (UTC) Received: by iyb26 with SMTP id 26so17470150iyb.13 for ; Sat, 08 Jan 2011 14:02:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=3YRI1nS1Q2EJK/C215OQbwbQ6+zaFm1thgtkei8yDw0=; b=o/Txwi6TbDIdk+sKR4qkNjokm362/45vop02lbFSG+LATQbZO8+DtlXcN+GL1JC4/G jwOiPs7f836orYoluLnH18Pz+evPLN9f4rPGvAaMUYUvUd+zG3q1tmwlC6cKOjIvNK82 LMIX9IP11DeRnr6dmULxBlP6m+EkyqgFXNv7A= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=nVNVS+tegEB8kXupYaWOv2nuv9AnklWYYQmeun+bRbxFw4o59bYjEO/9KQsoeFfdll tzIwDxxOgDlCyrWW32TriL+G8OSuQHKYCawcMI5VqlUSCmh69h3mTVI8RolwMZUtmwhJ YjNxDQGsM4gv356o/Z4dDTBot5r4xVj3ht3aM= MIME-Version: 1.0 Received: by 10.231.35.1 with SMTP id n1mr10947082ibd.0.1294522389025; Sat, 08 Jan 2011 13:33:09 -0800 (PST) Received: by 10.231.79.197 with HTTP; Sat, 8 Jan 2011 13:33:08 -0800 (PST) In-Reply-To: <4D28CB06.8030301@langille.org> References: <4D28CB06.8030301@langille.org> Date: Sat, 8 Jan 2011 16:33:08 -0500 Message-ID: From: Mehmet Erol Sanliturk To: Dan Langille Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 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 22:02:01 -0000 On Sat, Jan 8, 2011 at 3:37 PM, 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. > > -- > Dan Langille - http://langille.org/ > I think , you know the following pages : http://hub.opensolaris.org/bin/view/Community+Group+zfs/zfstestsuite http://dlc.sun.com/osol/test/downloads/current/ http://hub.opensolaris.org/bin/view/Community+Group+testing/testsuites http://hub.opensolaris.org/bin/view/Community+Group+testing/zones Some of the links may disappear spontaneously because of restructuring of their respective sites . Thank you very much . Mehmet Erol Sanliturk