Hardware counter virtualization-based performance analysis method for multiple virtual machines

Abstract

The invention discloses a hardware counter virtualization-based performance analysis method for multiple virtual machines. The method comprises the following steps of: when performance analysis is performed on multiple virtual machines at the same time and the multiple virtual machines need to occupy hardware counters, if the total number of central processing unit (CPU) events analyzed by multiple virtual machines surpasses the number of the hardware counters, virtualizing the hardware counters so as to meet requirements, otherwise, not virtualizing the hardware counters; and acquiring sampling information on the manager layer of an Xen virtual machine through a sampling mechanism, distributing the information to buffer zones which correspond to the virtual machines and analyzing and processing the information by using user layer programs of the virtual machines so as to obtain corresponding analysis result and detailed performance information. A request, which is used for starting or stopping performance analysis, of each virtual machine is monitored by a background daemon, Xenstore is taken as a message sending mechanism among the virtual machines, virtualization of the hardware counters is realized by time-sharing multiplexing technology, convenience is brought to program performance analysis in a virtual environment, and analysis accuracy is ensured well.

Description

technical field [0001] The invention belongs to the field of performance analysis of computing system virtualization, and in particular relates to a multi-virtual machine performance analysis method based on hardware counter virtualization, which enables multiple virtual machines to perform performance analysis independently. Background technique [0002] Virtualization technology allows a single physical computer to run multiple virtual machines at the same time, and each virtual machine runs its own operating system, so that applications can run in independent spaces without affecting each other. Therefore, virtualization technology significantly improves the utilization rate of software and hardware resources, improves management efficiency, and saves a lot of costs. Now, virtualization technology has received widespread attention from many companies. According to authoritative research institutions, in 2012, more than half of the world's workloads will be virtualized. ...

AI Technical Summary

Problems solved by technology

Therefore, for performance analysis tools based on hardware counters, the number of CPU events that can be analyzed simultaneously is limited, and existing performance analysis tools cannot simultaneously analyze different events in different virtual machines

Therefore, it cannot meet the needs of multiple users using differen

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