International Journal of Innovative Research in Science, Engineering and Technology (IJIRSET)
Multiple Virtual Machine (VM) shares the same physical resources (e.g., CPUs, caches, DRAM, and I/O devices). All the application allocated to individual VM separate from another. At the time performance weakness will occur. Performance weakness caused by struggle between virtual I/O workloads i.e., by increase the competition for shared resources and another could purposely slow down the execution of a targeted application in a VM. For that the increase model of cloud computing, e.g., Amazon Elastic Compute cloud (EC2), provide a stretchy strong environment for large-scale applications.