From owner-freebsd-stable@FreeBSD.ORG Mon Jan 25 17:04:02 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 732B91065672; Mon, 25 Jan 2010 17:04:02 +0000 (UTC) (envelope-from artemb@gmail.com) Received: from mail-iw0-f199.google.com (mail-iw0-f199.google.com [209.85.223.199]) by mx1.freebsd.org (Postfix) with ESMTP id 0BF368FC12; Mon, 25 Jan 2010 17:04:01 +0000 (UTC) Received: by iwn37 with SMTP id 37so3748506iwn.30 for ; Mon, 25 Jan 2010 09:04:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to:cc :content-type; bh=Kwc/e4Cr0JlaU+TkwDYYtG0ZkN6fjBWBKotxxdJN3ng=; b=gbCe6ZursasSKl2MtrjlsnrDUM/V1yUAOzYUEtw9li2wq2Vm7ZoKce2l9wdh88q+Zl 7ybsGpcgsaa6DCgJU9fZl/0h1Gk/mcxZ+zp7IF4CQ/Zrr0OBEB6Uzr1GrpBMyu4r2oJW tSbAGjNyO/eJb/3WOQNSbc8SDAdzdIdT9JUKg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; b=dh/U8VA/Cyw3jhAfRIsFsoqDixTKgn14Sz42ZCBrHQurD9U/n+/sxNFNEZOT5IuFsC Q9E24rkBf1RFjU4IVSAU8RSx45DAMqszD/Q1rvDyy2fX3EY7kNTAp2X1KyaYXHQE0UMJ 2gT0Sc+gewrpLxVNGxN6uBSsljPlxOmBlVBSk= MIME-Version: 1.0 Sender: artemb@gmail.com Received: by 10.231.149.9 with SMTP id r9mr3885943ibv.74.1264439040810; Mon, 25 Jan 2010 09:04:00 -0800 (PST) In-Reply-To: References: Date: Mon, 25 Jan 2010 09:04:00 -0800 X-Google-Sender-Auth: 06ca1031c6b56ef4 Message-ID: From: Artem Belevich To: Pete French Content-Type: text/plain; charset=ISO-8859-1 Cc: sub.mesa@gmail.com, freebsd-stable@freebsd.org, mav@freebsd.org, 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-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, 25 Jan 2010 17:04:02 -0000 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 wish intel would make cheap multi-port PCIe SATA card based on their AHCI controllers. --Artem 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 :-( > > -pete. > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >