[CentOS-virt] VMWare - 5.2 Update - Kernel Best Practices

[Johnny Hughes]

John Thomas wrote:
> David Hollis wrote:
>> Is there any detail on when you would actually need to use the
>> clocksource= option?  I'd love to not have to deal with the kernel-vm
>> packages since there doesn't appear to be a repo for them yet and if you
>> have other requirements like kmod-drbd you have to manually rebuild
>> those.
> 
> I use clocksource=pit because my VM clocks ran WAY fast without it. They 
> still run a bit fast (1 second per 6 hours type of thing).  If you do 
> not use a clocksource option, how are your clocks?
> 

One thing to make sure of if your clock is running fast is to get the 
correct setting for this in your vmx file for the VM:

host.cpukHz =

See this link for more info:

http://blog.autoedification.com/2006/11/vmware-guest-clock-runs-fast.html

Note:  if you do not have the command cpufreq-info you can get it by 
installing cpufreq-utils with this command:

yum install cpufreq-utils

Then set the value based on the above article, then time might not run 
as fast.

Thanks,
Johnny Hughes

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