From owner-freebsd-hardware Wed Dec 29 18:31:20 1999 Delivered-To: freebsd-hardware@freebsd.org Received: from news-ma.rhein-neckar.de (news-ma.rhein-neckar.de [193.197.90.3]) by hub.freebsd.org (Postfix) with ESMTP id 0DCF214E1D for ; Wed, 29 Dec 1999 18:31:17 -0800 (PST) (envelope-from daemon@bigeye.rhein-neckar.de) Received: from bigeye.rhein-neckar.de (uucp@localhost) by news-ma.rhein-neckar.de (8.8.8/8.8.8) with bsmtp id DAA08397 for freebsd-hardware@freebsd.org; Thu, 30 Dec 1999 03:31:15 +0100 (CET) (envelope-from daemon@bigeye.rhein-neckar.de) Received: (from daemon@localhost) by bigeye.rhein-neckar.de (8.9.3/8.9.3) id BAA46738 for freebsd-hardware@freebsd.org; Thu, 30 Dec 1999 01:47:37 +0100 (CET) (envelope-from daemon) From: naddy@mips.rhein-neckar.de (Christian Weisgerber) Subject: Re: ECC RAM useless with FreeBSD? Date: 30 Dec 1999 01:47:36 +0100 Message-ID: <84ea38$1dk9$1@bigeye.rhein-neckar.de> References: <8070C3A4E99ED211A63200105A19B99B317471@mail.edifecs.com> <19991228215756.A94267@panzer.kdm.org> <386A4B9D.A9F89749@echidna.com> To: freebsd-hardware@freebsd.org Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org In article <386A4B9D.A9F89749@echidna.com>, > Some memory errors are transient, radiation-induced events. The > likelihood of such errors is increased by the decreasing storage > cell charge employed with increasing memory density. This problem > will be more serious at high altitude because of increased cosmic > radiation. [...] Such errors are not memory chip problems per se, > and could be a good reason to enable ECC when available. ISTR recall that c't magazine examined that question some time ago and came to the conclusion that radiation-induced errors are absurdly rare (one each ten years or so?) compared to rather more earthly problems. -- Christian "naddy" Weisgerber naddy@mips.rhein-neckar.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message