High CPU usage - or not?

January 15, 2004 11:12 AM | | Comments (4)

Anyone got any theories on this? One of our customers has a box where task manager icon is showing a high cpu usage, the bottom of taskman shows 67% used, yet the cpu usage on the processes window shows 97% idle at the same time. Screen shot shown. If the server is rebooted the problem goes away for about a week before it starts to happen again. tl_server is our telnet server application so it is normal behaviour to have lots of copies running.

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4 Comments

By Chris on January 15, 2004 1:50 PM

Maybe they are not measuring over the same period of time?
I've just tried it on a busy box of mine and the 2 numbers went out of step under load, however the load on this box is just a single thread on a dual CPU box. It wouldn't be a dual processor box would it?

Looks Orable to me :)

By Richee on February 25, 2004 10:57 PM

Im having a similar problem with winxp , only my 100% useage starts straight from start up before i have even loaded anything. Did U get any decent sollutions

By Me on February 26, 2004 6:39 AM

Sort of.....although I doubt it will help you.
I downloaded process explorer from sysinternals .com and ran this which showed a high cpu% given over to the Interrupts (50%).
Looking on the internet at http://tinyurl.com/25724 this mentions looking at the Processor interrupts/sec and states that a value exceeding 1000 is a hardware problem. Problem is I then called out an engineer who came on site and ran diagnostics and found nothing wrong!But I then subsequently found out it could be a problem with using access odbc to access an sql table on the server where the user doesn't actually have rights to attach to the database! I doubt this will help you, but process explorer might do.

By tim on May 19, 2004 8:34 AM

hi , i have the exact same problem on my home pc.
it's not on a network and i have reloaded 6 times
with xp sp1.I have tried different cpu's ,ram,vga cards,monitors,sound cards,hard drives and i have come up with nothing.i used process explorer and it show hardware interupts averaging @ 50-60% . ive used both a 533FSB P4 2.4Ghz & current a 3GHZ HT and still the same prob.any idea's

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