From owner-freebsd-stable@FreeBSD.ORG Mon Feb 15 14:49:35 2010 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 53094106566C for ; Mon, 15 Feb 2010 14:49:35 +0000 (UTC) (envelope-from lopez.on.the.lists@yellowspace.net) Received: from mail.yellowspace.net (mail.yellowspace.net [80.190.200.164]) by mx1.freebsd.org (Postfix) with ESMTP id 12D1E8FC0C for ; Mon, 15 Feb 2010 14:49:34 +0000 (UTC) Received: from furia.intranet ([93.104.121.188]) (AUTH: CRAM-MD5 lopez.on.the.lists@yellowspace.net, SSL: TLSv1/SSLv3, 256bits, CAMELLIA256-SHA) by mail.yellowspace.net with esmtp; Mon, 15 Feb 2010 15:39:28 +0100 id 0036A15C.000000004B795CA0.0001541C Message-ID: <4B795CA0.10408@yellowspace.net> Date: Mon, 15 Feb 2010 15:39:28 +0100 From: Lorenzo On The Lists User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.7) Gecko/20100111 Thunderbird/3.0.1 MIME-Version: 1.0 To: Jonathan Belson References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: More zfs benchmarks 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: Mon, 15 Feb 2010 14:49:35 -0000 On 14.02.10 18:28, Jonathan Belson wrote: > The machine is a Dell SC440, dual core 2GHz E2180, 2GB of RAM and ICH7 SATA300 controller. There are three Hitachi 500GB drives (HDP725050GLA360) in a raidz1 configuration (version 13). I'm running amd64 7.2-STABLE from 14th Jan. > > First of all, I tried creating a 200MB file on / (the only non-zfs partition): > <..snip..> Hi, FYI, I Just made the same tests, on a FreeBSD 8.0-STABLE #4: Thu Dec 3 19:00:06 CET 2009, 4GB RAM, zpool comprised of: NAME SIZE USED AVAIL CAP HEALTH ALTROOT tank 1.81T 1.57T 251G 86% ONLINE - NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 mirror ONLINE 0 0 0 ad10 ONLINE 0 0 0 ad12 ONLINE 0 0 0 zpool upgrade This system is currently running ZFS pool version 13. I'm getting near-to-hardware performance on all tests, i.e. 94MB/s minimum. Tried with 200MB, 2000MB, 4000MB and 8000MB files repeatedly. All wonderful. E.g.: dd if=/tank/testfs/testfile.dat bs=1m of=/dev/null count=8000 8388608000 bytes transferred in 83.569786 secs (100378479 bytes/sec) marx# dd if=/tank/testfs/testfile.dat bs=1m of=/dev/null count=8000 8388608000 bytes transferred in 78.234149 secs (107224378 bytes/sec) Did repeated writing and reading. I have NO ZFS-related tunables at all in /boot/loader.conf. All left to self-tuning and defaults as advised since 8.0. kstat.zfs.misc.arcstats.memory_throttle_count: 0 at all times. Regards, Lorenzo