From owner-freebsd-stable Sat Aug 1 07:19:01 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id HAA15463 for freebsd-stable-outgoing; Sat, 1 Aug 1998 07:19:01 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from david.siemens.de (david.siemens.de [192.35.17.14]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id HAA15458 for ; Sat, 1 Aug 1998 07:18:58 -0700 (PDT) (envelope-from andre.albsmeier@mchp.siemens.de) X-Envelope-Sender-Is: andre.albsmeier@mchp.siemens.de (at relayer david.siemens.de) Received: from mail.siemens.de (salomon.siemens.de [139.23.33.13]) by david.siemens.de (8.9.1/8.9.1) with ESMTP id QAA13084 for ; Sat, 1 Aug 1998 16:18:41 +0200 (MET DST) Received: from curry.mchp.siemens.de (daemon@curry.mchp.siemens.de [146.180.31.23]) by mail.siemens.de (8.9.1/8.9.1) with ESMTP id QAA04923 for ; Sat, 1 Aug 1998 16:18:43 +0200 (MET DST) Received: (from daemon@localhost) by curry.mchp.siemens.de (8.8.8/8.8.8) id QAA07060 for ; Sat, 1 Aug 1998 16:18:44 +0200 (CEST) From: Andre Albsmeier Message-Id: <199808011418.QAA20459@internal> Subject: Re: CD writers as a backup medium In-Reply-To: from Scot Elliott at "Aug 1, 98 11:34:50 am" To: scot@planet-three.com (Scot Elliott) Date: Sat, 1 Aug 1998 16:18:35 +0200 (CEST) Cc: bromage@queens.unimelb.edu.au, freebsd-stable@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL40 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Hi. > > I use a Plasmon CDR-480 (which is just a Panasonic CW-7502. It's > supported by the cdrecord port. I am using the old CDR100 from Yamaha with cdrecord (no CAM). > > cdrecord automatically sets its priotity quite high, but I personally run > it and the mkisofs process with real time priority (see rtprio). I That's what I do as well (rtprio 5, yes, the number doesn't matter as long as it's the only rtprio process). > believe this is what /usr/share/examples/worm/... use with the worm > devices. My machine isn't overloaded, so I can't say what happens during > high usage, but I've never had an overrun yet - and I always do Think you mean an underrun here :-) > mkisofs-cdrecord piping rather than creating an ISO image first. I create the iso image first but while running cdrecord with rtprio, I make a buildworld, use netscape, run rc5,... all at the same time and never got an underrun. I am writing my CDs at 4x speed :-) The write buffer never goes below 97% and the CDR100 only has 256k buffer. > > If you want any more help let me know. > > Scot. -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message