From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Randy.Dunlap" Subject: Re: Unexpected IO-APIC Date: Tue, 24 Feb 2004 10:31:22 -0800 Sender: linux-smp-owner@vger.kernel.org Message-ID: <20040224103122.53bc6255.rddunlap@osdl.org> References: <20040224083805.1cc0de46.rddunlap@osdl.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Id: Content-Type: text/plain; charset="us-ascii" To: Lyle Worthington Cc: linux-smp@vger.kernel.org On Tue, 24 Feb 2004 12:03:58 -0600 Lyle Worthington wrote: | We rolled back to this kernel after having multiple problems with the | newer 2.6 kernels. This is the only kernel that has worked for us | consistently. It is on 70 or so other servers and runs without any | problems. | | I dont see this message on any of our P3 systems - only the systems that | have the P4s. It's refreshing to know that this is not the cause of the Yes, the P4s have a different chipset, which is where the IO-APIC is. | crashes - however the issue still remains that this one system is freezing | and there is no information in any of the log files, nor is there any | output to the screen when the system does freeze. | | The times of the crashes arent the same - fsck completes with no problems, | and the only message I see in /var/log/messages is "restart" - never any | errors. Im stuck on what to do next... | | Thanks again for your help - and can you please CC me on any reply - i | dont subscribe to linux-smp. Have you considered using a kernel debugger or crash dump (lkcd)? Or have you tried logging /proc/meminfo and 'vmstat' output every 5 seconds or so to see if they record any useful info? | On Tue, 24 Feb 2004 08:38:05 -0800, Randy.Dunlap wrote: | | > On Tue, 24 Feb 2004 09:07:21 -0600 Lyle Worthington wrote: | > | > | I am running RedHat 7.3 on a dual P4 3.2G Xeons with 6G RAM and linux | > | kernel 2.4.18-19.7.xbigmem. This sytem is the only one report this | > | IO-APIC issue and has crashed 4 times in the past 6 days. I have | > searched | > | all over the web trying to find replies to messages people have sent in | > | regarding this issue but have found none so I am emailing hoping you | > can | > | help. Here is the output from dmesg, let me know if you need any more | > | information: | > | | > | IO APIC #2...... | > | .... register #00: 02008000 | > | ....... : physical APIC id: 02 | > | WARNING: unexpected IO-APIC, please mail | > | to linux-smp@vger.kernel.org | > | .... register #01: 00178020 | > | ....... : max redirection entries: 0017 | > | ....... : PRQ implemented: 1 | > | ....... : IO APIC version: 0020 | > | .... register #02: 00000000 | > | ....... : arbitration: 00 | > | .... IRQ redirection table: | > | > Hi, | > The problems that you are seeing aren't likely to have anything to do | > with the unexpected IO-APIC warning message. In fact, that message | > has been removed in the 2.6.x kernels. | > | > Is there a more recent kernel that you can use? Just wondering since | > I don't know about RH updates. | > | > -- | > ~Randy -- ~Randy