From owner-freebsd-hardware Tue Feb 18 14:21:53 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id OAA05555 for hardware-outgoing; Tue, 18 Feb 1997 14:21:53 -0800 (PST) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id OAA05541 for ; Tue, 18 Feb 1997 14:21:38 -0800 (PST) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.2/8.7.3) id IAA06984; Wed, 19 Feb 1997 08:51:26 +1030 (CST) From: Michael Smith Message-Id: <199702182221.IAA06984@genesis.atrad.adelaide.edu.au> Subject: Re: Motherboard doesn't like tape drive In-Reply-To: from John Fieber at "Feb 18, 97 04:27:22 pm" To: jfieber@indiana.edu (John Fieber) Date: Wed, 19 Feb 1997 08:51:25 +1030 (CST) Cc: hardware@freebsd.org X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk John Fieber stands accused of saying: > > After: ASUS P/I-P55T2P4 Pentum 100 motherboard + ASUS SC200 > + archive viper 150 tape drive. I've tried every trick > in the book, every snazzy buffering tape streaming > enhancement gizmo and the thing just won't stream anymore! > I get about 60KBytes/sec throughput on a good day. I put the > old adaptec 1542C controller back in but that made no difference. IDE or SCSI disk? The Archive has a rather small buffer (24K IIRC), and it's quite possible that it'll starve in the time that it takes your system to talk to an IDE disk. If you have any of the go-faster flags turned on on the IDE disk, try turning them off. (Particularly the multi-block stuff). > -john -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[