On Thu, 2006-06-01 at 15:54 -0400, Sam Drinkard wrote: > This is really strange. Day before, I updated the machine here (x86_64) > and all went normal. I rebooted, and everything came back just as I > expected. Next morning, I noticed one of my jobs during the night had > finished, but finished late by about 8 or 9 minutes. I really didn't > think much of it, but after looking at jobs running today, I'm seeing > the same thing. Processes that used to take 3.75 hours to complete are > now taking 4 hours. ( I have cron jobs that were running to process the > data after the main run, and they busted) Nothing has changed in the > way the model runs, and there have been no changes to input data or any > other parameter that would cause a longer runtime. So, the question is, > did something change in the kernel that would make the machine run > slower? I do have threading turned on in the bios, and all 4 cpu's are > shown via dmesg. In fact, I looked at the dmesg output after a reboot > and due to another message about losing clock tics, I just checked that > I had not encountered the same. Short of rebooting back into the > previous kernel, is there any way to tell if something is slowing the > box down? > There is an issue with VM configuration that might cause swapping and that COULD slow the machine down. However ... since it was an "Important kernel securtity update" ... I would at least read this before booting into the old kernel: https://rhn.redhat.com/errata/RHSA-2006-0493.html Here is details concerning the VM issue: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=188141 I reality that bug started last kernel ... but I have noticed more on this one.
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