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Modeling VMware ESX Performance
The performance implications of consolidating Windows systems under VMware ESX Server are analyzed using a simulation model. First VMware ESX Server overhead is measured based on data from Windows systems running as virtual machines under VMware ESX Server. Then a simulation model is used to estimate the contention for the physical CPUs by the virtual CPUs being dispatched from the Windows virtual machines. The simulation results are compared to multiple benchmark runs to validate the assumptions of the simulation model.
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Measuring Up for Server Virtualization
Server virtualization is one of the hottest topics for the capacity planner. 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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Real-World Adventures in Server Virtualization
Server Virtualization continues to be one of the hottest topics of 2008. Join our quest for enlightenment as we explore the performance data of a large enterprise environment. We’ll travel through a major consolidation effort, review some of the basic methodology and difficulties of the migration, then look closely at data captured from VMware ESX, its Virtual Machines and Windows servers seeking correlations between activity levels, response times and other key measurements both before and after virtualization. When our quest for enlightenment is complete, we’ll provide recommendations to aid in your virtualization endeavors.
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