From owner-freebsd-stable@FreeBSD.ORG Sun Jan 24 21:54:43 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 0578B106566B; Sun, 24 Jan 2010 21:54:43 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from mail-fx0-f226.google.com (mail-fx0-f226.google.com [209.85.220.226]) by mx1.freebsd.org (Postfix) with ESMTP id 35F0E8FC1A; Sun, 24 Jan 2010 21:54:41 +0000 (UTC) Received: by fxm26 with SMTP id 26so490877fxm.13 for ; Sun, 24 Jan 2010 13:54:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:newsgroups:to:cc:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=EsVLB3AoYxVdcmOhg/E17qMGAwiszH33kOdv6DLGnkc=; b=KeZs8mx3sPtgIvFFstTBBUMInJngHEd+n5wrAaq/qEI/euXhjn4bJEgr1+ylmhClRE 9YsrBQduyrTPWC45Ut3EnusLxqw5hyfxuRv0LRrnvINCLKde0Ia1tajIVk/uQiFlXKvm EwXY0pZ0rD8QFyMHoTYuTTD7mT8KJoElhrSts= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:newsgroups:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; b=DG3i9KcESzUrIT7CyydH8AUK9G+opbU/AauE4kC2h4h5vL1F/2q4JqJIg7uZHyTZNF d+Jg2MIF3N1mNz+3nnTobUvW5vI9PvaSejp751QbMx7kp4eNk3DgoxtjiDh9yr/u6Qiu oYflKNK6cosVrMSRCknDJG+YVqe/vFdZH6UzM= Received: by 10.223.92.142 with SMTP id r14mr5880299fam.93.1264370080984; Sun, 24 Jan 2010 13:54:40 -0800 (PST) Received: from mavbook.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id 16sm2415845fxm.8.2010.01.24.13.54.39 (version=SSLv3 cipher=RC4-MD5); Sun, 24 Jan 2010 13:54:40 -0800 (PST) Sender: Alexander Motin Message-ID: <4B5CC167.5010604@FreeBSD.org> Date: Sun, 24 Jan 2010 23:53:43 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 Newsgroups: lucky.freebsd.fs,lucky.freebsd.questions,lucky.freebsd.stable To: Dan Naumov References: <883b2dc51001240905r4cfbf830i3b9b400969ac261b@mail.gmail.com> <1264368182.00211075.1264355402@10.7.7.3> In-Reply-To: <1264368182.00211075.1264355402@10.7.7.3> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org, Jason Edwards , FreeBSD-STABLE Mailing List , freebsd-questions@freebsd.org Subject: Re: 8.0-RELEASE/amd64 - full ZFS install - low read and write disk performance 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: Sun, 24 Jan 2010 21:54:43 -0000 Dan Naumov wrote: > This works out to 1GB in 36,2 seconds / 28,2mb/s in the first test and > 4GB in 143.8 seconds / 28,4mb/s and somewhat consistent with the > bonnie results. It also sadly seems to confirm the very slow speed :( > The disks are attached to a 4-port Sil3124 controller and again, my > Windows benchmarks showing 65mb/s+ were done on exact same machine, > with same disks attached to the same controller. Only difference was > that in Windows the disks weren't in a mirror configuration but were > tested individually. I do understand that a mirror setup offers > roughly the same write speed as individual disk, while the read speed > usually varies from "equal to individual disk speed" to "nearly the > throughput of both disks combined" depending on the implementation, > but there is no obvious reason I am seeing why my setup offers both > read and write speeds roughly 1/3 to 1/2 of what the individual disks > are capable of. Dmesg shows: > > atapci0: port 0x1000-0x100f mem > 0x90108000-0x9010807f,0x90100000-0x90107fff irq 21 at device 0.0 on > pci4 > ad8: 1907729MB at ata4-master SATA300 > ad10: 1907729MB at ata5-master SATA300 8.0-RELEASE, and especially 8-STABLE provide alternative, much more functional driver for this controller, named siis(4). If your SiI3124 card installed into proper bus (PCI-X or PCIe x4/x8), it can be really fast (up to 1GB/s was measured). -- Alexander Motin