From owner-freebsd-questions Thu Jul 11 04:33:02 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id EAA06708 for questions-outgoing; Thu, 11 Jul 1996 04:33:02 -0700 (PDT) Received: from plato.ucsalf.ac.uk (plato.ucsalf.ac.uk [193.62.40.188]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id EAA06703 for ; Thu, 11 Jul 1996 04:32:58 -0700 (PDT) Received: from localhost by plato.ucsalf.ac.uk with smtp (Smail3.1.29.1 #5) id m0ueJzL-000jxOC; Thu, 11 Jul 96 12:32 WET DST Date: Thu, 11 Jul 1996 12:32:55 +0100 (BST) From: Mark Powell To: "Daniel M. Eischen" cc: freebsd-questions@freebsd.org Subject: Re: Does Adaptec 7880 Ultra support simultaneous wide and narrow transfers? In-Reply-To: <9607111025.AA10945@iworks.InterWorks.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Thu, 11 Jul 1996, Daniel M. Eischen wrote: > When did you get your -stable system? There were some bug fixes that were incorporated > into the aic7xxx driver in late June. Make sure you're running a -stable after that > date. Cheers, that seems to have fixed it. ~900K/s now. Still I thought two 7200rpm drives would be at least in the M/s range? > If you want to increase performance, add option "AHC_TAGENABLE" to your kernel > configuration. If all your devices handle tagged queueing properly, then you > can try adding "AHC_SCBPAGING_ENABLE" to your kernel configuration also. Okay, done both. Seems okay. Drive seems to make a different noise on boot-up now. Different seek patterns with the new code or just pure imagination? > For devices on both internal narrow and wide channels, you should have termination > set to Low Off / High On. Already done that. Many thanks for the help though. > Dan Eischen > deischen@iworks.InterWorks.org Mark Powell - Senior Network Technician - Room: C806 Computer Services Unit, University College Salford, Salford, Manchester, UK. Tel: +44 161 745 3376 Fax: +44 161 736 3596 Email: mark@ucsalf.ac.uk finger mark@ucsalf.ac.uk (for PGP key) Home Page