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8 Replies Last post: Jul 4, 2009 7:23 AM by kalyand
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CPU count with windows shows as 1 while its allocated 2 CPUs

Jul 3, 2009 6:01 AM

Click to view kalyand's profile Novice kalyand 6 posts since
Oct 24, 2006

I have a VM which is allocated 2 CPUs ( edit settings and show 2 CPU) .Within the Windows when I run system information it shows 1 CPU though in the processor section of DEvice Manager is shows the two processor.

Also when I run task manager or perf mon I see only I CPU too .Any help is appreciated to resolv the issue .

Tags: os-specific
Reply Re: CPU count with windows shows as 1 while its allocated 2 CPUs Jul 3, 2009 6:04 AM
Click to view firestartah's profile Hot Shot firestartah 135 posts since
Aug 10, 2006
Have you run device manager and scanned for new devices??


If you found this or other information useful, please consider awarding points for "Correct" or "Helpful".

Gregg Robertson, MCSE, MCSA, MCTS,MCITP

Reply Re: CPU count with windows shows as 1 while its allocated 2 CPUs Jul 3, 2009 6:14 AM
Click to view Anton V Zhbankov's profile Champion Anton V Zhbankov 2,714 posts since
May 26, 2008
Open Device Manager in Windows and Select "Update driver" on "Uniprocessor PC". Reboot after that.
You just need to update HAL from Uniprocessor to Multiprocessor.

---
VMware vExpert '2009
http://blog.vadmin.ru
Reply Re: CPU count with windows shows as 1 while its allocated 2 CPUs Jul 3, 2009 6:19 AM
Click to view RDPetruska's profile Guru RDPetruska 15,853 posts since
Jan 11, 2005 Moderator

What VMware product and version are you using so we can move this thread to the appropriate forum?

Have you changed the HAL in the guest to use a multiprocessor one?

Reply Re: CPU count with windows shows as 1 while its allocated 2 CPUs Jul 3, 2009 7:17 AM
in response to: Anton V Zhbankov
Click to view kalyand's profile Novice kalyand 6 posts since
Oct 24, 2006

I have in DEvice Manager --> Computer -->ACPI Multiprocessor PC .

DO I need to change it back to uniprocessor and then reboot and change it to Multi to see if it works .

Reply Re: CPU count with windows shows as 1 while its allocated 2 CPUs Jul 3, 2009 7:19 AM
in response to: RDPetruska
Click to view kalyand's profile Novice kalyand 6 posts since
Oct 24, 2006
I am Vmware 3.5 update 4.How do I change the HAL on the guest to use mutliprocessor ?
Reply Re: CPU count with windows shows as 1 while its allocated 2 CPUs Jul 3, 2009 8:24 AM
Click to view RDPetruska's profile Guru RDPetruska 15,853 posts since
Jan 11, 2005 Moderator

Thread moved to ESX 3.5 forum.

If device manager shows ACPI Multiprocessor, that's correct. You're saying it only shows 1 CPU though? Did you have the VM powered off when you added the 2nd virtual CPU?

Reply Re: CPU count with windows shows as 1 while its allocated 2 CPUs Jul 4, 2009 12:04 AM
in response to: kalyand
Click to view Anton V Zhbankov's profile Champion Anton V Zhbankov 2,714 posts since
May 26, 2008
If you already have multiprocessor HAL just power VM off and on.

---
VMware vExpert '2009
http://blog.vadmin.ru
Reply Re: CPU count with windows shows as 1 while its allocated 2 CPUs Jul 4, 2009 7:23 AM
in response to: RDPetruska
Click to view kalyand's profile Novice kalyand 6 posts since
Oct 24, 2006
We did reboot a couple of times
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