Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 5 Mar 2003 16:41:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 5 Mar 2003 16:41:57 -0500 Received: from [12.36.124.2] ([12.36.124.2]:9095 "EHLO intranet.resilience.com") by vger.kernel.org with ESMTP id ; Wed, 5 Mar 2003 16:41:56 -0500 Mime-Version: 1.0 Message-Id: In-Reply-To: <20030305205032.GD2958@atrey.karlin.mff.cuni.cz> References: <20030303123029.GC20929@atrey.karlin.mff.cuni.cz> <20030305205032.GD2958@atrey.karlin.mff.cuni.cz> Date: Wed, 5 Mar 2003 13:52:16 -0800 To: Linux Kernel Mailing List From: Jonathan Lundell Subject: Linux vs Windows temperature anomaly Content-Type: text/plain; charset="us-ascii" ; format="flowed" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1264 Lines: 29 We've been seeing a curious phenomenon on some PIII/ServerWorks CNB30-LE systems. The systems fail at relatively low temperatures. While the failures are not specifically memory related (ECC errors are never a factor), we have a memory test that's pretty good at triggering them. Data is apparently getting corrupted on the front-side bus. Here's the curious thing: when we run the same memory test on a Windows 2000 system (same hardware; we just swap the disk), we can run the ambient temperature up to 60C with no problem at all; the test will run for days. (It occurred to us to try Win2K because the hardware vendor was using it to test systems at temperature without seeing problems.) Swap in the Linux disk, and at that temperature it'll barely run at all. The memory test fails quickly at 40C ambient. FWIW, CPU cooling is pretty good in this box. So, the puzzle: what might account for temperature sensitivity, of all things, under Linux 2.4.9-31 (RH 7.2), but not Win2K? -- /Jonathan Lundell. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/