[NTLUG:Discuss] Weird VMWare Performance
Chris Cox
cjcox at acm.org
Wed Oct 17 11:23:14 CDT 2007
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.
e.g. (as root)
echo 1 >/sys/module/processor/parameters/max_cstate
No guarantees of course, but this might help.
So.. unless you have the magic multiplier range or a CPU without
frequency scaling, you've probably had the problem all along... or
you recompiled your kernel and set HZ to 100.
Let us know if this helps...
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