From owner-freebsd-alpha Wed May 2 11:32:48 2001 Delivered-To: freebsd-alpha@freebsd.org Received: from post.mail.nl.demon.net (post-11.mail.nl.demon.net [194.159.73.21]) by hub.freebsd.org (Postfix) with ESMTP id 8283D37B424 for ; Wed, 2 May 2001 11:32:44 -0700 (PDT) (envelope-from wkb@freebie.demon.nl) Received: from [212.238.54.101] (helo=freebie.demon.nl) by post.mail.nl.demon.net with smtp (Exim 3.22 #1) id 14v1QZ-0003EL-00; Wed, 02 May 2001 18:32:43 +0000 Received: (from wkb@localhost) by freebie.demon.nl (8.11.3/8.11.2) id f42Ib6E01488; Wed, 2 May 2001 20:37:06 +0200 (CEST) (envelope-from wkb) Date: Wed, 2 May 2001 20:37:06 +0200 From: Wilko Bulte To: Terry Lambert Cc: Riccardo.Veraldi@fi.infn.it, freebsd-alpha@freebsd.org Subject: Re: vector: 0x670 Message-ID: <20010502203706.E1339@freebie.demon.nl> References: <200105021827.LAA29183@usr02.primenet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i In-Reply-To: <200105021827.LAA29183@usr02.primenet.com>; from tlambert@primenet.com on Wed, May 02, 2001 at 06:27:38PM +0000 X-OS: FreeBSD 4.3-STABLE X-PGP: finger wilko@freebsd.org Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Wed, May 02, 2001 at 06:27:38PM +0000, Terry Lambert wrote: > > 670 Processor Uncorrectable unrecoverable cache or TLB errors, or > > read of a non-existent I/O space > > > > > > Do you think it can be an error due to overheating or do I have to throw > > my AlphaStation away ?? > > No quick answers, but some things to try, and some advice and > opinions... > > > A cache error means that the processor is bad, if it's L1 cache; > this could be the result of overheating. If it's L2 cache, the > cause could still be overheating, but I've seen a lot of people > trying to use cache chips that were too slow. I don't recall which AS version this was, but most of the have SMD soldered on caches. Some have cache modules, some cache SIMMs. In case of cache modules of any shape or form please check if they are seated well. > - If it's overheating, that's usually the result of overclocking, > either intentionally, or unintentionally. Make sure you are not > doing that. Easily tested by trying if your fingers get fried when touching the heatsink. > You might also be using memory which is too slow, or has fake > parity instead of real parity (don't do that). Slow memory > tends to become more of an issue when you stick in a lot of it, > since the DMA refresh doesn't get around to each bank in time; > this is particularly problematic if you are doing heavy I/O, > so that the memory bus is latched for DMA, and refresh is thus > delayed really long due to bus hold times; this is usually > possible to adjust in the drivers or controller configurations > and is often called "bus on" time. *Very* unlikely. Alpha machines are built to really drive lots of memory. Not this whimpy PC stuff that drives only 4 SIMMs/DIMMs from a single ASIC. > - I've occasionally loaded a machine with too much memory for > it to reasonably handle refresh, given the memory bus speed > and the bus-on time for some PCI controllers (I had an Adaptec > that was a bus hog; when I loaded the disk subsystem with the > extra amount of RAM, the refresh failed, and the system lost > its mind). Again, unlikely. > A TLB error means that the contents of a Translation Lookaside > Buffer are incorrect. This could be a kernel bug. Or the CPU is dead/dying. Seen that before.. -- | / o / / _ Arnhem, The Netherlands email: wilko@freebsd.org |/|/ / / /( (_) Bulte Powered by FreeBSD/alpha http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message