[NTLUG:Discuss] Weird VMWare Performance

[Kenneth Loafman]

Chris Cox wrote:
> David Simmons wrote:
>> While I don't think we have any VMWare experts (maybe we do), was hoping
>> maybe someone would have some pointers as to where to start researching
>> and/or other tech support groups to contact.  Thanks in advance.
>>
> VMware does not (and they don't want to fix this) understand
> multi frequency CPUs.  One thing you can try is prior to starting
> VMware you can change your max_cstate to 1.

Interesting!  I've never had a problem with frequency scaling CPU's, but
I use mostly AMD's so this may not apply.  This is highly important in
laptops (I'm running 2 VMs right now - the thing would melt if it had to
run without letting it scale down.).

Do you have a cite from VMware on this?  I tried Google, but no results
match.  I have seen the 'host clock change request' messages in syslog,
but these are just informative as far as I can tell.

I am curious if the max_cstate change will fix the issue.

...Ken