From owner-freebsd-stable@FreeBSD.ORG Sun Feb 5 01:31:49 2006 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 77A4516A420; Sun, 5 Feb 2006 01:31:49 +0000 (GMT) (envelope-from scrappy@hub.org) Received: from hub.org (hub.org [200.46.204.220]) by mx1.FreeBSD.org (Postfix) with ESMTP id 019C543D46; Sun, 5 Feb 2006 01:31:48 +0000 (GMT) (envelope-from scrappy@hub.org) Received: from localhost (unknown [200.46.204.144]) by hub.org (Postfix) with ESMTP id 0D63362C8D4; Sat, 4 Feb 2006 21:31:48 -0400 (AST) Received: from hub.org ([200.46.204.220]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 85471-08; Sat, 4 Feb 2006 21:31:47 -0400 (AST) Received: from ganymede.hub.org (blk-222-82-85.eastlink.ca [24.222.82.85]) by hub.org (Postfix) with ESMTP id 8A64F62C856; Sat, 4 Feb 2006 21:31:47 -0400 (AST) Received: by ganymede.hub.org (Postfix, from userid 1000) id 5AA7947363; Sat, 4 Feb 2006 21:31:51 -0400 (AST) Received: from localhost (localhost [127.0.0.1]) by ganymede.hub.org (Postfix) with ESMTP id 59D2446D04; Sat, 4 Feb 2006 21:31:51 -0400 (AST) Date: Sat, 4 Feb 2006 21:31:51 -0400 (AST) From: "Marc G. Fournier" To: Ivan Voras In-Reply-To: <43E52A89.4020700@fer.hr> Message-ID: <20060204213028.D3207@ganymede.hub.org> References: <43E52A89.4020700@fer.hr> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Virus-Scanned: by amavisd-new at hub.org Cc: stable@freebsd.org, freebsd-proliant@freebsd.org Subject: Re: Compaq Proliant CISS slow writes 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, 05 Feb 2006 01:31:49 -0000 Not sure if this is standard, but on an idle machine (ie. just set it up, nothing running on it yet), with RAID1+0 across 4 drives: Writing the 853 Megabyte file, 'iozone.tmp'...15.656250 seconds Reading the file...3.921875 seconds IOZONE performance measurements: 57129601 bytes/second for writing the file 228063191 bytes/second for reading the file The server is a new DL360 G4p, drives are SAS ... On Sat, 4 Feb 2006, Ivan Voras wrote: > I need to get a Proliant machine with 2 P3 processors running FreeBSD 6. I > don't know much about the machine, I think it's ML 380 G2 or close to that, > but I have physical access. So far, everything is fine (once the inability to > boot from CD-ROM is circumvented), except one "detail": horrible write > performance on its CISS 5 RAID5 array. I get ~75MB/s burst (large blocks) > reads, and only 5MB/s burst writes. I know how RAID5 works, but still, this > is bad. The machine has been running Linux before this and performance was Ok > - I didn't benchmark it but the "feeling" when working on it was normal, > while on FreeBSD it's noticably slow in mixed read/write load. > > Is there anything I can try to improve this? In the verbose boot log there's > a line that says the controller supports "simple, performant and MEMQ" modes, > and the one that's used is "simple" - does this have any influence? If so, > how to change it? > > Thanks! > ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664