Patent ID: 9063769
Filing Date: 2015-06-23
Classification: G06F

Abstract:
1. A method to monitor performance of a computer comprising at least one physical server where each physical server comprises a hardware machine attached via a hypervisor to a plurality of virtual machines, wherein the method in each physical server comprises: measuring server performance parameters for a selected packet flow in transition between the hardware machine and the virtual machines, where the server performance parameters are measured by utilizing time stamps obtained in the hardware machine and the virtual machines for at least one of incoming packets and outgoing packets; estimating the measured server performance parameters by observing parameters time stamped at the hardware machine and corresponding parameters time stamped at the virtual machines; identifying at least one of the virtual machines as a source of server degradation by establishing degradation of the observed parameters time stamped at the at least one of the virtual machines; and wherein each physical server has a physical hardware clock which is used to obtain the time stamps in the hardware machine and the virtual machines.