Vdismodel: A Display Latency Performance Model in Virtualization Environment

With the rapid development of virtualization technology as well as the good performance of computer hardware, virtual machine is beginning to gradually increase the performance of display to meet the needs of desktop users. However, there is a difference between the display mechanism in the virtual environment and the traditional environment. At present, more is focused on how to effectively and pertinently measure and assess the performance of display in virtualization environment. Taking consideration of the characteristics of display in the virtual environment, the virtual machine display performance evaluation system has following advantages: it can select a representative workload running on the VM in Domain U, make use of Tracing and Instrumentation to insert the record in the kernel of VM, log the relevant information, and then finally draw the performance-related parameters by the analysis of the recorder. This paper mainly depicts the underlying implementation details of the virtual display system in Xen and analyzes the display principle of Xen-based virtual machine. It also proposes a display latency performance model in Xen environment, which is named Vdismodel by verifying the reasonableness of the Vdismodel through a series of experiments and comparing the theoretical data and the measured data which are accessed by the virtual machine system performance evaluation.