From owner-freebsd-stable Mon Feb 17 3: 7:18 2003 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 98BBB37B401 for ; Mon, 17 Feb 2003 03:07:16 -0800 (PST) Received: from cirb503493.alcatel.com.au (c18609.belrs1.nsw.optusnet.com.au [210.49.80.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id 47D9E43F3F for ; Mon, 17 Feb 2003 03:07:15 -0800 (PST) (envelope-from peterjeremy@optushome.com.au) Received: from cirb503493.alcatel.com.au (localhost.alcatel.com.au [127.0.0.1]) by cirb503493.alcatel.com.au (8.12.5/8.12.5) with ESMTP id h1HB73LZ063581; Mon, 17 Feb 2003 22:07:03 +1100 (EST) (envelope-from jeremyp@cirb503493.alcatel.com.au) Received: (from jeremyp@localhost) by cirb503493.alcatel.com.au (8.12.6/8.12.5/Submit) id h1HB72xG063580; Mon, 17 Feb 2003 22:07:02 +1100 (EST) Date: Mon, 17 Feb 2003 22:07:02 +1100 From: Peter Jeremy To: Matthew Dillon Cc: FreeBSD Stable List Subject: Re: ECC memory error reporting Message-ID: <20030217110701.GF53497@cirb503493.alcatel.com.au> References: <20030214070641.GV20271@techometer.net> <1045206745.4513.65.camel@chowder.gsoft.com.au> <20030214135928.A2869@freebie.xs4all.nl> <3E4D1323.4030005@tenebras.com> <200302142058.h1EKwYhj059269@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200302142058.h1EKwYhj059269@apollo.backplane.com> User-Agent: Mutt/1.4i Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Fri, Feb 14, 2003 at 12:58:34PM -0800, Matthew Dillon wrote: > Find old WW2 bomber instrumentation. The government used fairly > serious radioactive material in the glow-in-the-dark phospher > instrumentation markings. I forget what it was exactly. > It isn't enough to hurt you (though bomber pilots staring at rows upon > rows of these instruments for long periods of time might be a different > story), The life-expectancy of a WW2 bomber pilot (at least RAF) was low enough that it's unlikely that staring at the radium-coated instrumentation would have made things detectably worse. (I suspect that you'd have needed a radiation dose in the 100-200 rem range to show up in the statistics). > but they should be sufficient to mess up any high density memory > placed in close proximity (less then an inch away). I recall the big fuss when 64k DRAMS first appeared - the cell size had dropped to the point where a single alpha particle could flip a bit. There was lots of press about which manufacturers has the best packaging to protect against hits. (And I suspect the biggest source was the ceramic or CER-DIP package itself). RAM densities are now 3 orders of magnitude higher and there's virtually no mention of radiation dangers... Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message