FreeBSD in VMWare Problem

6 December 2007

If you’ve installed FreeBSD on VMWare and installed the VMWare Tools, you’ll probably find that you get the following message appear every-so-often:

“calcru: runtime went backwards”

This appears to be a problem with VMWare simulating the timer. You can fix it by running the following code:

sysctl kern.timecounter.hardware=TSC

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