From owner-freebsd-questions@FreeBSD.ORG Mon Jan 25 17:40:56 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6EE71106566B; Mon, 25 Jan 2010 17:40:56 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from mail-fx0-f227.google.com (mail-fx0-f227.google.com [209.85.220.227]) by mx1.freebsd.org (Postfix) with ESMTP id A0D708FC1C; Mon, 25 Jan 2010 17:40:55 +0000 (UTC) Received: by fxm27 with SMTP id 27so1035750fxm.3 for ; Mon, 25 Jan 2010 09:40:54 -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:to:cc:subject:references:in-reply-to :x-enigmail-version:content-type:content-transfer-encoding; bh=jyVLdTkQZoMWraDkskVuVR3bPC8wn5sQeuUCWzwb9Q8=; b=S4RSwRySSyrX++8NofKAKsDgLvcnI4jg/4pWfM7m5tgiUKLN0z3C5AYaEZsBYxSzG2 LGSlNxxoVy7q7HPyvULC1PyV7/9SOKqheWIgbbdeypj1c0v7K0jqUOe9YFCWpQal+qpY 0o0rJA6OlSeI4E+iEZtwaXSOL9bi0bmVE4U1I= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=Hrb7I+C0KBOdAAeBbBOLrVO5EBykitEpMIvD0VaaTjhO/4ikrrimK1hS0Zg2P3Qusy ktWjJmtlNsV43ipa6CPbwVDpnmhsekLE0Wb4j9w/ZpODVC38IVUn2vZvossqPGedNnMm FJGyKw5xVsBsGKH3idE7LtLbullHt8cpNACN8= Received: by 10.223.16.72 with SMTP id n8mr6510981faa.26.1264441254397; Mon, 25 Jan 2010 09:40:54 -0800 (PST) Received: from mavbook.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id 16sm2850502fxm.12.2010.01.25.09.40.52 (version=SSLv3 cipher=RC4-MD5); Mon, 25 Jan 2010 09:40:53 -0800 (PST) Sender: Alexander Motin Message-ID: <4B5DD7A2.4000101@FreeBSD.org> Date: Mon, 25 Jan 2010 19:40:50 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: Artem Belevich References: In-Reply-To: X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Mon, 25 Jan 2010 18:28:50 +0000 Cc: sub.mesa@gmail.com, freebsd-stable@freebsd.org, Pete French , dan.naumov@gmail.com, freebsd-fs@freebsd.org, wonslung@gmail.com, bfriesen@simple.dallas.tx.us, freebsd-questions@freebsd.org Subject: Re: 8.0-RELEASE/amd64 - full ZFS install - low read and write disk performance X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Jan 2010 17:40:56 -0000 Artem Belevich wrote: > aoc-sat2-mv8 was somewhat slower compared to ICH9 or LSI1068 > controllers when I tried it with 6 and 8 disks. > I think the problem is that MV8 only does 32K per transfer and that > does seem to matter when you have 8 drives hooked up to it. I don't > have hard numbers, but peak throughput of MV8 with 8-disk raidz2 was > noticeably lower than that of LSI1068 in the same configuration. Both > LSI1068 and MV2 were on the same PCI-X bus. It could be a driver > limitation. The driver for Marvel SATA controllers in NetBSD seems a > bit more advanced compared to what's in FreeBSD. I also wouldn't recommend to use Marvell 88SXx0xx controllers now. While potentially they are interesting, lack of documentation and numerous hardware bugs make existing FreeBSD driver very limited there. > I wish intel would make cheap multi-port PCIe SATA card based on their > AHCI controllers. Indeed. Intel on-board AHCI SATA controllers are fastest from all I have tested. Unluckily, they are not producing discrete versions. :( Now, if discrete solution is really needed, I would still recommend SiI3124, but with proper PCI-X 64bit/133MHz bus or built-in PCIe x8 bridge. They are fast and have good new siis driver. > On Mon, Jan 25, 2010 at 3:29 AM, Pete French > wrote: >>> I like to use pci-x with aoc-sat2-mv8 cards or pci-e cards....that way you >>> get a lot more bandwidth.. >> I would goalong with that - I have precisely the same controller, with >> a pair of eSATA drives, running ZFS mirrored. But I get a nice 100 >> meg/second out of them if I try. My controller is, however on PCI-X, not >> PCI. It's a shame PCI-X appears to have gone the way of the dinosaur :-( -- Alexander Motin