From owner-freebsd-current Sun Aug 10 00:39:53 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id AAA08306 for current-outgoing; Sun, 10 Aug 1997 00:39:53 -0700 (PDT) Received: from smtp2.xs4all.nl (smtp2.xs4all.nl [194.109.6.52]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id AAA08301 for ; Sun, 10 Aug 1997 00:39:49 -0700 (PDT) Received: from asterix.xs4all.nl (root@asterix.xs4all.nl [194.109.6.11]) by smtp2.xs4all.nl (8.8.6/XS4ALL) with ESMTP id JAA20914; Sun, 10 Aug 1997 09:39:46 +0200 (CEST) Received: from plm.xs4all.nl (uucp@localhost) by asterix.xs4all.nl (8.8.6/8.8.6) with UUCP id JAA19135; Sun, 10 Aug 1997 09:38:57 +0200 (MET DST) Received: (from plm@localhost) by plm.xs4all.nl (8.8.6/8.7.3) id JAA27620; Sun, 10 Aug 1997 09:34:39 +0200 (MET DST) Date: Sun, 10 Aug 1997 09:34:39 +0200 (MET DST) Message-Id: <199708100734.JAA27620@plm.xs4all.nl> From: Peter Mutsaers MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: "Michael L. VanLoon -- HeadCandy.com" Cc: Peter Mutsaers , freebsd-current@freebsd.org Subject: Re: IDE vs SCSI was: flags 80ff works (like anybody doubted it) In-Reply-To: <199708100714.AAA04251@MindBender.serv.net> References: <877mdw2smi.fsf@plm.xs4all.nl> <199708100714.AAA04251@MindBender.serv.net> X-Mailer: VM 6.31 under Emacs 19.34.1 Sender: owner-freebsd-current@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >> On Sun, 10 Aug 1997 00:14:29 -0700, "Michael L. VanLoon -- >> HeadCandy.com" said: >> More interesting is: >> >> ~> dd if=/dev/rsd0 of=/dev/null count=1600 bs=64k&;dd if=/dev/rsd0 of=/dev/nul "LV> l count=1600 bs=64k& >> i.e. start two of them at the same time. >> I get as result: >> 104857600 bytes transferred in 41.430049 secs (2530955 bytes/sec) >> 104857600 bytes transferred in 41.437855 secs (2530478 bytes/sec) "LV> What would be much more interesting to me is if you would do this on a "LV> four-drive ccd stripe-set, both with Ultra-Wide SCSI and "UltraIDE". "LV> It would be interesting to have a process running non-stop, measuring "LV> the amount of left-over CPU, at the same time. If only I had that hardware... -- /\_/\ ( o.o ) Peter Mutsaers | Abcoude (Utrecht), | Trust me, I know ) ^ ( plm@xs4all.nl | the Netherlands | what I'm doing.