From owner-freebsd-fs@FreeBSD.ORG Wed Jun 24 20:27:33 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1937D1065672; Wed, 24 Jun 2009 20:27:33 +0000 (UTC) (envelope-from dan.naumov@gmail.com) Received: from mail-yx0-f179.google.com (mail-yx0-f179.google.com [209.85.210.179]) by mx1.freebsd.org (Postfix) with ESMTP id B40CE8FC14; Wed, 24 Jun 2009 20:27:32 +0000 (UTC) (envelope-from dan.naumov@gmail.com) Received: by yxe9 with SMTP id 9so177257yxe.3 for ; Wed, 24 Jun 2009 13:27:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type:content-transfer-encoding; bh=MDAfEgqaM9duuPJecDn0tOomnJJKH2S6z0njixr9xfw=; b=qF1+GiMvnO8Zew0FyW+KPKbPiznSK2snHJyOt8VVQZZzl4msgfVg5tM+WYQQJeKWtV 4gekAT4cw9eztqaF4/CKUdOqGActi56ZfXpbTKuRefRSdsFvxi8f7NqoC0fpudfU2SHH 8Ap9uW9+fWHqxJwTqcU44XFf0hUNpDs+GliKQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; b=kktb62XVjqwcYKIfF7RLPT2j/CIYt78lI/d94s1MXjV9dX5pEMamvAIJ6JMJI4d+1+ iDOzp8XibQIsAkpDI9Yxml97LHGNL6G5klrXUbuOBW/kmAVJmE5BAZX7SQbg3E1PicVG Wb04FUNZuWitcuAQuWSvyFbWAQ/xdYxLcrmfo= MIME-Version: 1.0 Received: by 10.100.91.15 with SMTP id o15mr2349248anb.47.1245875251607; Wed, 24 Jun 2009 13:27:31 -0700 (PDT) Date: Wed, 24 Jun 2009 23:27:31 +0300 Message-ID: From: Dan Naumov To: freebsd-geom@freebsd.org, freebsd-fs@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Subject: read benchmarks: ufs/zfs/ext3 raidz/raid5 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jun 2009 20:27:33 -0000 Another FreeBSD person on a forum I frequent did some read benchmarks on his system: Athlon64 3500+ with 2GB DDR2 SDRAM, a WD 250GB system drive, and 5 Seagate Barracuda 750GB SATA-II data drives. ZFS and UFS testing was done using FreeBSD 7.2-RELEASE amd64, and ext3 testing was done using Ubuntu Server 8.04-LTS amd64. The used disks do not support NCQ, so there is no "NCQ advantage" on the Linux side. Random Access reads, 5MB chunks: http://virtual.tehinterweb.net/livejournal/2009-06-22_zfs_diskperf/zfs-diskperf-untuned-5mb.png Random Access reads, 1MB chunks: http://virtual.tehinterweb.net/livejournal/2009-06-22_zfs_diskperf/zfs-diskperf-untuned-1mb.png Random Access reads, 5MB chunks (big list): http://virtual.tehinterweb.net/livejournal/raid_performance/raid-diskperf-5mb-all.png Here is the original forum discussion thread: http://episteme.arstechnica.com/eve/forums/a/tpc/f/96509133/m/857002910041 Sincerely, - Dan Naumov