From owner-freebsd-current@FreeBSD.ORG Wed Sep 2 12:38:52 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F077A106568F for ; Wed, 2 Sep 2009 12:38:52 +0000 (UTC) (envelope-from james-freebsd-current@jrv.org) Received: from mail.jrv.org (rrcs-24-73-246-106.sw.biz.rr.com [24.73.246.106]) by mx1.freebsd.org (Postfix) with ESMTP id B393B8FC21 for ; Wed, 2 Sep 2009 12:38:52 +0000 (UTC) Received: from kremvax.housenet.jrv (kremvax.housenet.jrv [192.168.3.124]) by mail.jrv.org (8.14.3/8.14.3) with ESMTP id n82CcnmH038610; Wed, 2 Sep 2009 07:38:50 -0500 (CDT) (envelope-from james-freebsd-current@jrv.org) Authentication-Results: mail.jrv.org; domainkeys=pass (testing) header.from=james-freebsd-current@jrv.org DomainKey-Signature: a=rsa-sha1; s=enigma; d=jrv.org; c=nofws; q=dns; h=message-id:date:from:user-agent:mime-version:to:cc:subject: references:in-reply-to:content-type:content-transfer-encoding; b=vEseTRK+GHpM7V2EKCVjpzELP6bnDkgO2AGb0TkwYXqO9NBTyJckOZ7akN40bvUSQ ZoYYMQJeRFZDgcRC4LRtsnxqzpeYeJ/qA9S8eBTynr25gmI26tsBqm+idM8TZuHFtdI fTaAbXHHhSG6uUO39gBdzQW/WcWKBYGv2+SucyI= Message-ID: <4A9E6759.7090700@jrv.org> Date: Wed, 02 Sep 2009 07:38:49 -0500 From: "James R. Van Artsdalen" User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812) MIME-Version: 1.0 To: "Derek (freebsd lists)" <482254ac@razorfever.net> References: <4A9E5F34.2090700@razorfever.net> In-Reply-To: <4A9E5F34.2090700@razorfever.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: FreeBSD Current Subject: Re: siis/atacam/ata/gmirror 8.0-BETA3 disk performance X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Sep 2009 12:38:53 -0000 Derek (freebsd lists) wrote: > I get about 40MB/s read, and 30MB/s write. See attached > bench-*.txt files. That's too slow. As I posted on July 31 I got sustained read rates of 875 MB/s across ten disks, through two 3124 cards and four port multipliers. The system I tested was a dual processor Opteron 244 (1.8 GHz) running amd64. Perhaps more important, my disk controllers were on two different PCI-X buses with ample bandwidth (100 MHz 64-bit and 133 MHz 64-bit). Is your disk controller on a PCI bus, and is there any other PCI traffic at the time?