VMWare workstantion 6, virtual winXP, CPU clock speed to fast

mrpc_cambodia · 06-06-2008, 06:02 AM

Hello all,

I installed UBUNTU version 8 on my laptop. I want to have a virtual windows xp pro by using VMware workstation 6.

I can successfully installed the vmware, but when i start to install the xp client, the clock speed goes very fast.

Can you give me some ideas, how to solve this issue?

Thank you,

mrpc_cambodia

theterran · 08-12-2008, 10:01 AM

@mrpc_cambodia

Like yourself, I am running Ubuntu desktop 8.0.4 LTS with VMware Workstation 6. In a Windows XP virtual machine, the clock speed seems to run very fast most of the time, though once in a while it will run slow instead.

Most days I will find my clock in the virtual XP machine advances 10-15 minutes ahead of real time each hour. The rate is not consistent, but the behavior is; the clock is almost never right. The machine will correct itself from a time source every hour or so, but then drifts off the mark again.

Any ideas on why this happens, or how to correct the issue?

Thanks,

theTerran

theterran · 08-18-2008, 06:50 PM

Found the answer to this (finally!) in the VMware knowledge base, in an article titled "Virtual Machine Clock Reports Time Unpredictably on Multiprocessor Systems":

http://kb.vmware.com/selfservice/mic...200%2023714519

Excerpt from the article:

Quote:

If you are running VMware desktop virtualization products on a multiprocessor system in which the timestamp counters (TSCs) do not remain synchronized between all processors, the operating system clock in each virtual machine can perform unpredictably. In this context, "multiprocessor" includes systems with multiple cores but only one processor socket.

This certainly applies in my case, and will hopefully help others as well. Good luck!

theTerran