Server virtualization is one of the hottest topics for the capacity planner in 2005. How does a hardware virtualization environment like VMware ESX impact the performance measurements we've been accustomed to getting from Windows and Linux? If you can't measure it, you can't manage it, so how are we to measure and understand this new environment? This paper presents a lab-based study designed specifically to aid in understanding performance measurements available directly from VMware ESX. This study sheds light on the impact of virtualization on Windows performance counters.
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