From owner-freebsd-chat Fri May 21 14:35:57 1999 Delivered-To: freebsd-chat@freebsd.org Received: from smtp04.primenet.com (smtp04.primenet.com [206.165.6.134]) by hub.freebsd.org (Postfix) with ESMTP id 2439815ACC; Fri, 21 May 1999 14:35:54 -0700 (PDT) (envelope-from tlambert@usr07.primenet.com) Received: (from daemon@localhost) by smtp04.primenet.com (8.8.8/8.8.8) id OAA12633; Fri, 21 May 1999 14:35:53 -0700 (MST) Received: from usr07.primenet.com(206.165.6.207) via SMTP by smtp04.primenet.com, id smtpd012582; Fri May 21 14:35:50 1999 Received: (from tlambert@localhost) by usr07.primenet.com (8.8.5/8.8.5) id OAA03301; Fri, 21 May 1999 14:35:49 -0700 (MST) From: Terry Lambert Message-Id: <199905212135.OAA03301@usr07.primenet.com> Subject: Re: SGI, XFS and OSS? To: ragnar@sysabend.org (Jamie Bowden) Date: Fri, 21 May 1999 21:35:48 +0000 (GMT) Cc: eivind@FreeBSD.ORG, dkelly@hiwaay.net, scrappy@hub.org, freebsd-chat@FreeBSD.ORG In-Reply-To: from "Jamie Bowden" at May 20, 99 08:58:17 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-chat@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > XFS on an indy R4600/133mhz with ultra-narrow drives on a scsi2-fast > controller did better than my K6/233mhz with AHA-2940UW with UW drives for > large directory reads and writes. This is not a useful comparison. I believe the MIPS box has a faster and wider memory bus. Since what you are measuring is I/O, not computation speed, the speed of your processor is irrelevent, so long as it is as fast or faster than your bus. Even with a 32 bit PCI controller, the PCI burst transmission rate over a 33MHz I/O bus is going to be your gating factor. People who think that all machines are as I/O limited as PC's, and that you can compare based on processor speed have bought into The Big PC Vendor Lie; I think that a MicroVAX II with a QBUS is likely to be able to put your 233MHz machine to shame for some operations, and uVAXen run at what, 16MHz? Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message