intel对桌面虚拟化产品的对比测试

intel对桌面虚拟化产品的对比测试

White Paper

Intel Information Technology

Streaming, Virtual Hosted Desktop, Computing Models, Client Virtualization

Streaming and Virtual Hosted Desktop Study

Benchmarking Results

As part of an ongoing evaluation of emerging computing models for enterprise operations, Intel Information Technology studied the impacts of streamed client and Virtual Hosted Desktop computing models on server and network utilization. Utilization varied depending on the model studied, illustrating that each model is more efficient for specific workloads. Virtual Hosted Desktop is better suited for standardized applications with relatively static screens, such as data entry. Streaming more efficiently supports multimedia and other dynamic applications, including unified communications.Catherine Spence and Christian Black, Intel CorporationJanuary 2008

intel对桌面虚拟化产品的对比测试

White Paper Intel Information Technology — Streaming and Virtual Hosted Desktop Study

Contents

Executive Summary ....................................................................................................................................................................................................2Background ...................................................................................................................................................................................................................2Benchmark Study ........................................................................................................................................................................................................3Technical Architecture ................................................................................................................................................................................................................................................3Server Utilization Results .........................................................................................................................................................................................................................................5Network Utilization Results .....................................................................................................................................................................................................................................6Conclusion .....................................................................................................................................................................................................................8

Executive Summary

Which computing model makes more efficient use of servers and the network: streaming software to clients that run appli-cations locally, or Virtual Hosted Desktops, which rely on remote processing on a virtualized server? Intel Information Technology compared the impact on servers and the network for both models. We designed and executed an application script to simulate a realistic workload based on standard office applications. We utilized identical server, network, and client configurations for both computing models to minimize any performance differences due to hardware. In addition, for network utilization testing, we included ‘traditional’ clients with the Operating System (OS) in-stalled locally and evaluated the impact on the network when these clients ran locally embedded applications and when applications were streamed to them.Benchmark findings were as follows:

Server – Server utilization was significantly lower for streaming than Virtual Hosted Desktop. Compute-intensive and multime-dia applications caused high server utilization in Virtual Hosted Desktop. Streaming the applications to the Virtual Hosted Desktop virtual machine improved performance over embed-ded applications running on the Virtual Hosted Desktop. For 20 clients, server utilization was about 44 percent lower for streaming than Virtual Hosted Desktop. Streaming improved Virtual Hosted Desktop server utilization by about 15 percent. Network – Network utilization was consistently low for Virtual Hosted Desktop. Streaming over time became more network efficient, as the OS and applications were cached locally. At boot time, streaming briefly consumed the network. For 20 clients, the Virtual Hosted Desktop network sent metric was less than 5 Mbps as compared to 15 Mbps for streaming.

Efficiency – Comparing computing model efficiencies, Virtual Hosted Desktop was more efficient for workloads with low screen refresh. Streaming was more efficient for a wider variety of applications including graphics, multimedia, flash animation, and real-time collaboration.

Background

New computing models are emerging in the enterprise. As networks become more robust, the common theme is to enable centralized, network-based services that are provided on-demand.

One of the computing models that meets these criteria is streamed client computing. With streaming, the server delivers the OS and/or applications over the network for temporary, local execution by clients. OS streaming involves creating and stor-ing a disk image on a server and loading it on the client via the network at boot time. In application streaming, the server stores strategically packaged client applications and distributes them to the clients as users access the application. When a user invokes an application, the server sends the first application execution block to the client, allowing the user to immediately become productive. It sends additional blocks in the background. Streaming can work with virtualization technologies. For exam-ple, streamed applications can execute within a Virtual Machine (VM) on a client or server.

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