From owner-freebsd-hackers Mon Feb 5 01:55:55 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id BAA15552 for hackers-outgoing; Mon, 5 Feb 1996 01:55:55 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id BAA15538 for ; Mon, 5 Feb 1996 01:55:47 -0800 (PST) Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id KAA23196; Mon, 5 Feb 1996 10:51:39 +0100 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id KAA07821; Mon, 5 Feb 1996 10:51:38 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.7.3/8.6.9) id KAA04598; Mon, 5 Feb 1996 10:43:48 +0100 (MET) From: J Wunsch Message-Id: <199602050943.KAA04598@uriah.heep.sax.de> Subject: Re: Watchdog timers (was: Re: Multi-Port Async Cards) To: bde@zeta.org.au (Bruce Evans) Date: Mon, 5 Feb 1996 10:43:48 +0100 (MET) Cc: gibbs@freefall.freebsd.org, freebsd-hackers@freebsd.org (FreeBSD hackers) Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199602050426.PAA27801@godzilla.zeta.org.au> from "Bruce Evans" at Feb 5, 96 03:26:18 pm X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-hackers@freebsd.org Precedence: bulk As Bruce Evans wrote: > > >Yes, but this is not exactly fair. Your SCSI controller only has 5 times > >the command overhead as your IDE card (because you have a very poor SCSI > >controller). > Should I upgrade to a ST01 controller? ;-) The controller overhead was > almost irrelevant for the Minix-IDE setup because the disk activity LED > only blinked on for a second or two out of the 17 seconds. Jumping in a bit late here. I've got some piece of obsolete hardware where i can make a fair comparision if you want. (386/16, 5-year old ST1144A IDE drive vs. a nifty but flakey MXT-1280 SCSI drive hanging on an AHA-1540A.) -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)