From owner-freebsd-hackers Sun Oct 26 04:38:36 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id EAA02579 for hackers-outgoing; Sun, 26 Oct 1997 04:38:36 -0800 (PST) (envelope-from owner-freebsd-hackers) Received: from iafnl.es.iaf.nl (uucp@iafnl.es.iaf.nl [195.108.17.20]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id EAA02574; Sun, 26 Oct 1997 04:38:30 -0800 (PST) (envelope-from wilko@yedi.iaf.nl) Received: by iafnl.es.iaf.nl with UUCP id AA01076 (5.67b/IDA-1.5); Sun, 26 Oct 1997 13:38:53 +0100 Received: (from wilko@localhost) by yedi.iaf.nl (8.8.5/8.6.12) id TAA00990; Sat, 25 Oct 1997 19:29:27 +0100 (MET) From: Wilko Bulte Message-Id: <199710251829.TAA00990@yedi.iaf.nl> Subject: Re: 2.2.2-RELEASE '875 SCSI won't negotiage To: se@FreeBSD.ORG (Stefan Esser) Date: Sat, 25 Oct 1997 19:29:27 +0100 (MET) Cc: dkelly@hiwaay.net, joe@via.net, freebsd-hackers@FreeBSD.ORG In-Reply-To: <19971025111540.12105@mi.uni-koeln.de> from "Stefan Esser" at Oct 25, 97 11:15:40 am X-Organisation: Private FreeBSD site - Arnhem, The Netherlands X-Pgp-Info: PGP public key at 'finger wilko@freefall.freebsd.org' X-Mailer: ELM [version 2.4 PL24 ME8a] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk As Stefan Esser wrote... > On 1997-10-20 20:24 -0500, dkelly@hiwaay.net wrote: > This IS low! > > Seems your drive does not signal early command completion > on writes, even if tags are used (or did you disable tags ?) > > What's the state of the WCE bit in mode page 8 ? > > # scsi -f /dev/sd0 -m 8 > WCE: 1 > [ ... having read further down, I see you DTRT WRT WCE ... ] Side stepping but interesting all the same: FreeBSD 2.2.1R / NCR810 / DEC RZ29B / Pentium 100 / WCE=1 / on /usr -------Sequential Output-------- ---Sequential Input-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU %CPU 3980 97.6 5921 25.2 2063 14.1 4094 98.3 5813 20.4 ditto but WCE=0 Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 3957 97.4 5798 24.4 2057 14.0 4059 97.3 6773 23.7 102.9 5.6 Oh: DEC RZ29B == Seagate ST15150N Barracuda 4Gb. Seems that WCE is a mixed blessing to say the least. All of this is an ASUS P100 box Wilko _ ____________________________________________________________________ | / o / / _ Bulte email: wilko@yedi.iaf.nl http://www.tcja.nl/~wilko |/|/ / / /( (_) Arnhem, The Netherlands - Do, or do not. There is no 'try' ------------------ Support your local daemons: run FreeBSD Unix -----Yoda