Fixing your VMWare's guest clock

If you’re using VMWare on a variable-speed processor (like all most modern cpu’s these days) you might have noticed that sometimes the guest OS runs a lot faster (causing the guest clock to run faster and all kinds of weird effects).

The fix for that is easy, and specified in this knowledgebase article¹:

Add to /etc/vmware/config the following lines:

host.cpukHz = 1700000
host.noTSC = TRUE
ptsc.noTSC = TRUE

replacing 1700000 with the actual top speed of your processor. Et voila, runs better ;)

1. Internet Archive snapshot. Original URL: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1591  ↩︎