From owner-freebsd-questions Wed Mar 26 14:36:08 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id OAA05327 for questions-outgoing; Wed, 26 Mar 1997 14:36:08 -0800 (PST) Received: from luke.cpl.net ([206.85.245.131]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id OAA05316 for ; Wed, 26 Mar 1997 14:36:05 -0800 (PST) Received: from localhost (shawn@localhost) by luke.cpl.net (8.8.5/8.7.3) with SMTP id OAA03582; Wed, 26 Mar 1997 14:35:39 GMT Date: Wed, 26 Mar 1997 14:35:39 +0000 (GMT) From: Shawn Ramsey To: Ben Black cc: "Paul T. Root" , questions@freebsd.org Subject: Re: SCSI-II vs Ultra-SCSI In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > > performance than the 1542B. I have a Gigabyte MB with Triton II with > > the 2 EIDE controllers. > > > > this is the usual argument against scsi, but it is simply wrong. they > key to scsi is that the controller and devices are intelligent. they > handle a lot of the I/O processing on their own *without* CPU > intervention. EIDE requires CPU assistance for just about everything. > if you have a lot of I/O on your machine, performance will suffer because > the CPU will be handling so many of the EIDE interrupts. Isnt that only true of Busmaster SCSI controllers? There are PIO SCSI controllers, although im not sure if that one is. (Note I am not saying he should use IDE, by any means. Just get a better controller. :) )