From owner-freebsd-amd64@FreeBSD.ORG Wed Oct 4 13:59:15 2006 Return-Path: X-Original-To: freebsd-amd64@freebsd.org Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9C74016A407 for ; Wed, 4 Oct 2006 13:59:15 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: from multiplay.co.uk (core6.multiplay.co.uk [85.236.96.23]) by mx1.FreeBSD.org (Postfix) with ESMTP id 096B943D53 for ; Wed, 4 Oct 2006 13:59:14 +0000 (GMT) (envelope-from killing@multiplay.co.uk) Received: from vader ([85.236.96.60]) by multiplay.co.uk (multiplay.co.uk [85.236.96.23]) (MDaemon PRO v9.0.1) with ESMTP id md50003059728.msg for ; Wed, 04 Oct 2006 14:58:58 +0100 Message-ID: <035801c6e7bd$3aad9f10$b3db87d4@multiplay.co.uk> From: "Steven Hartland" To: "Gibson, Jasen \(GE Indust, ConsInd, consultant\)" , References: <888F5D88060A214ABEFED0011CF18662011FF937@LOUMLVEM03.e2k.ad.ge.com> Date: Wed, 4 Oct 2006 14:58:46 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Spam-Processed: multiplay.co.uk, Wed, 04 Oct 2006 14:58:59 +0100 (not processed: message from valid local sender) X-MDRemoteIP: 85.236.96.60 X-Return-Path: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-amd64@freebsd.org X-MDAV-Processed: multiplay.co.uk, Wed, 04 Oct 2006 14:59:00 +0100 Cc: Subject: Re: suggestions for SATA RAID cards X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Oct 2006 13:59:15 -0000 Gibson, Jasen (GE Indust, ConsInd, consultant) wrote: > I'm using the same card, Chris. My setup is a Tyan S2881 dual > Opteron board and 4 WD RE2 400GB drives in a RAID 5. > My speed varies greatly, depending how large a file I'm accessing > (which is an expected result, I think). Files less than a GB, write > at about around 130MB/s, read between 400-600MB/s (have not ruled > out whether cache is helping boost this number). Thats cached for sure. Files over 10GB > this drops to a read speed of 40GB, like you've seen. But the write > speed will stay up at around 90! It's very odd. I've been seeing > similar posts to this for a while now, concerning Highpoint, 3ware, > Qlogic, and Adaptec cards and freebsd 5.4+; it almost makes me wonder > if there's not another factor here, drivers or something. I had similar issues as you say with read being much slower than write using a highpoint controller the fix was to change the default block size of the array to the min the controller supported. Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.