From owner-freebsd-chat Wed Mar 1 19:11:47 2000 Delivered-To: freebsd-chat@freebsd.org Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by hub.freebsd.org (Postfix) with ESMTP id 40A7937BDBD for ; Wed, 1 Mar 2000 19:11:44 -0800 (PST) (envelope-from grog@freebie.lemis.com) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id NAA05407; Thu, 2 Mar 2000 13:41:28 +1030 (CST) Date: Thu, 2 Mar 2000 13:41:27 +1030 From: Greg Lehey To: Marc Slemko Cc: Alfred Perlstein , chat@FreeBSD.ORG Subject: Re: M$ one-ups UNIX??? Message-ID: <20000302134127.N2905@freebie.lemis.com> References: <20000301190016.Z21720@fw.wintelcom.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0pre2i In-Reply-To: WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-chat@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Wednesday, 1 March 2000 at 19:36:31 -0700, Marc Slemko wrote: > On Wed, 1 Mar 2000, Alfred Perlstein wrote: > >> * Jonathan Lemon [000301 18:58] wrote: >>> In article you write: >>>>>> ----- Forwarded message from Scott Bartram ----- >> I'm still unclear as to what this addresses... > > Keep it on the Unix level for an easier example. Say someone mails > a 100 meg file to 20 people that have mailboxes on a machine. So > there will be 100 megs in each /var/mail/user mailbox. The idea > behind this feature is that it could magically detect that and > combine the bodies to point to a single reference on disk that is > read-only; if changes are made, then that block or whatever is > copied. If it's just for mail, that might be a solution. We did something like that at Tandem decades ago: instead of sending the attachment, send a reference to the attachment. The first time anybody on a node reads the attachment, get it. From then on, retrieve it from the cache. Sound familiar? But I'm pretty sure that's not what they're talking about. They specifically refer to OS files. Maintaining consistency must be a nightmare. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message