Understanding Memory Resource Management in VMware ESX Server

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Executive Summary

VMware ESX is an efficient hypervisor which effectively manages usages of hardware resources like memory storage and CPU as well as provides effective networking solutions for multiple virtual machines being used concurrently. The resource management guidelines and policies built in the ESX helps to analyze a targeted memory allocation for each single virtual machine on the basis of the parameter settings and present system load. With this automated analysis, the memory allocation for each machine is done via an inbuilt dynamic adjustment system. VMware has recently released a paper in which it talks about the memory management principles in ESX, the various possible configuration alternatives and the benefits and impacts of each configuration. The paper is generated assuming a virtualization environment and gives the reader helpful information on ESX architecture that will assist in understanding the basic concepts for this system. Memory statistics regarding Active Guest Memory and Consumed Host Memory will show the user the skewed allocation of memory usages and the write up attempts in analyzing the reasons behind the same. The paper also gives the user details on the memory reclamation and management of memory allocation for manifold virtual machines. It also gives test results and performance evaluation from experiment environment angle and performance of transparent page sharing. You can also get valuable information on industry best practices in memory management principles.

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