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Task Manager only Shows 1 Processor with Xeon

I have a HP Proliant DL360 G4 server running Windows 2003 Server. It has one Intel Xeon 3.4 GHz processor. The Intel Processor ID Utility shows that this processor supports Hyper threading. Having a processor that supports hyper threading, I expect to see two processors/cores shown on the performance tab in task manager, but I only see one.

In task manager, I have checked the View->CPU History option and it is set to "One Graph per CPU" (in fact thats the only option given).

I have also tried changing the environmental variable "Number_Of_Processors" from "1" to "2" and reboot but the setting always reverts back to "1" after a reboot and task manager is no different than before.

Device Manager does show "ACPI Multiprocessor PC" under "Computer", which I believe is correct for this type of cpu.
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optikconnex
Asked:
optikconnex
1 Solution
 
Michael_MCDSTCommented:
Copied from older post entry by garycase:;
If the CPU utilization is constantly at 99-100% as shown even when the processes tab only shows the kind of utilization shown above, then indeed you have either a bad CPU or something is corrupt in the OS that's causing Task Manager to display incorrectly.    To eliminate the latter possibility, download a demo copy of Everest Ultimate and see what it reports for the CPU utilization [Enable the OSD monitoring page and watch it for a while].
forgot the link:  http://www.lavalys.com/products/overview.php?pid=3&ps=UE&lang=en
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CC85Commented:
Your processor may not have HT enabled.  To check this, reboot and enter the BIOS setup menu.  You will find an option there that will indicate if it's enabled.
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optikconnexAuthor Commented:
So simple and yet so right. Thanks CC85.

For those who may have a similar server, watch for the F9 prompt to enter the BIOS. The setting will be under "Advanced Options". Thanks!
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