Just noticed one more thing... it appears to be Apache causing the super high load (among other programs running) when SMP is compiled into the kernel, and with a bunch of errors in syslog:
[Wed Dec 17 02:27:37 2003] [notice] child pid xxxxxx exit signal Segmentation fault (11) (and a whole bunch of these errors, like 50 lines) I did a search and someone said it has to do with Apache requesting memory that it doesn't own or something: http://lists.debian.org/debian-apache/2002/debian-apache-200207/msg00005.html but that doesn't really help in this case, unless you guys can think of a different angle on this? ----- Original Message ----- From: "Jason Lim" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, December 16, 2003 11:23 PM Subject: Intel Hyperthreading problem on server? > Hi All... > > Do you guys know anything about a problem with Intel Hyperthreading (eg. > on the Intel 2.4Ghz HT-enabled processor) that would cause the load > average to jump to over 200? > > Here is the log line: > > Dec 16 22:48:17 be watchdog[250]: loadavg 203 101 40 is higher than the > given threshold 200 150 100! > > (then it reboots) > > This happened on the 2.4.22 kernel, and now I tried it with the 2.4.23 > kernel, and it has the same problem. > > When the kernel is compiled WITHOUT SMP support, the kernel works fine, > and it can have uptimes of months without any problem. But when SMP is > compiled in, and the HT processor is correctly identified (and top can see > CPU0 and CPU1), then it only takes about an hour or two of operation > before the load average jumps like that. Note that this is with Debian > woody/stable, and with a clean kernel.org kernel. > > Do you guys know anything about this, or have any ideas where I should > look? Is there something in Woody that isn't friendly with SMP or perhaps > HyperThreading processors? > > Thanks in advance. > > Sincerely, > Jas > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
