From owner-freebsd-current Thu Aug 7 23:40:52 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id XAA27119 for current-outgoing; Thu, 7 Aug 1997 23:40:52 -0700 (PDT) Received: from shell.uniserve.com (tom@shell.uniserve.com [204.244.210.252]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id XAA27110; Thu, 7 Aug 1997 23:40:46 -0700 (PDT) Received: from localhost (tom@localhost) by shell.uniserve.com (8.8.5/8.8.5) with SMTP id XAA25725; Thu, 7 Aug 1997 23:36:11 -0700 (PDT) X-Authentication-Warning: shell.uniserve.com: tom owned process doing -bs Date: Thu, 7 Aug 1997 23:36:11 -0700 (PDT) From: Tom To: Alex cc: Atipa , "John S. Dyson" , dyson@FreeBSD.ORG, ggm@connect.com.au, current@FreeBSD.ORG Subject: Re: IDE vs SCSI was: flags 80ff works (like anybody doubted it) In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Thu, 7 Aug 1997, Alex wrote: > My AHA-1542 with a Quantum Lightning was glacial, the oldish WD 212mb hdd > I had out preformed it easily. If you can increase the DMA timings on your motherboard, and this doesn't upset your other cards, you can get a noticable performance improvent. The 1542 defaults to a really safe default transfer rate. You can increase it and run a test to verify. The main problem is the ISA bus, not SCSI. The 1542 tries hard to get around this, but ISA is just a pain. Tom