From owner-freebsd-stable Wed Sep 15 17:55:20 1999 Delivered-To: freebsd-stable@freebsd.org Received: from freeway.dcfinc.com (cx74889-a.phnx3.az.home.com [24.1.193.157]) by hub.freebsd.org (Postfix) with ESMTP id E39621529B for ; Wed, 15 Sep 1999 17:55:18 -0700 (PDT) (envelope-from chad@freeway.dcfinc.com) Received: (from chad@localhost) by freeway.dcfinc.com (8.8.8/8.8.8) id RAA12030; Wed, 15 Sep 1999 17:55:03 -0700 (MST) (envelope-from chad) From: "Chad R. Larson" Message-Id: <199909160055.RAA12030@freeway.dcfinc.com> Subject: Re: Vinum performance testing... In-Reply-To: from Adrian Filipi-Martin at "Sep 15, 99 04:33:13 pm" To: adrian@ubergeeks.com Date: Wed, 15 Sep 1999 17:55:03 -0700 (MST) Cc: blk@skynet.be, freebsd-stable@FreeBSD.ORG Reply-To: chad@DCFinc.com X-Mailer: ELM [version 2.4ME+ PL40 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG As I recall, Adrian Filipi-Martin wrote: > This is in line with what I would expect for RAID 0 and 1. CPU > usage just makes the I/O performance measurements more compelling. CPU > will also be more interesting when it comes to measuring the RAID 5 > performance later. And you'd particularly want to check CPU on the RAID 5 with a disc down. Life is worst when you have to do the pre-reads to be able to calculate the XORs when writing and reading a 4 plex that just used to be a 5 plex. Load and response during catchup would also be a useful data point. -crl -- Chad R. Larson (CRL15) 602-953-1392 Brother, can you paradigm? chad@dcfinc.com chad@larsons.org larson1@home.net DCF, Inc. - 14623 North 49th Place, Scottsdale, Arizona 85254-2207 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message