Remote Desktop Protocol Performance Improvements in Windows

MICROSOFT

Remote Desktop Protocol Performance Improvementsin Windows Server 2008 R2 and Windows 7Microsoft Corporation January 2010

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ContentsCopyright ....................................................................................................................................................... 2 Contents ........................................................................................................................................................ 3 Overview ....................................................................................................................................................... 4 User Scenarios............................................................................................................................................... 5 Test Setup ..................................................................................................................................................... 6 Remote Desktop Connection Settings ...................................................................................................... 6 Presentation Virtualization ........................................................................................................................... 8 Color Depth ............................................................................................................................................... 8 ClearType Virtualization (a.k.a. Font Smoothing) ................................................................................... 10 Desktop Composition .............................................................................................................................. 11 Embedded Multi-Media Performance .................................................................................................... 12 Multi-Media Redirection ......................................................................................................................... 14 Effects of Latency on Broadband Remoting Performance...................................................................... 15 Conclusion ............................................................

....................................................................................... 16 Appendices.................................................................................................................................................. 17 Appendix A. Hardware Configuration ..................................................................................................... 17 Appendix B. Understanding Network Traffic Profiles ............................................................................. 18

OverviewWith the release of the Windows Server®°2008 R2 and Windows®°7 operating systems, Remote Desktop Protocol (RDP) is more feature rich, enabling new presentation and remote-oriented functionality such as accelerated bitmap rendering, multi-media redirection streaming, and network topology awareness. In short, RDP is better able to support today’s ever increasingly complex and rich multi-media environment. As these features become integrated in the enterprise environment, it is important to analyze and understand their impact on your current network infrastructure and the end-user experience. This paper details different RDP features and the potential improvements to usability and quality of the end user remoting experience as well as system deployment metrics. It also includes performance considerations for inpidual features that can help guide your decisions when modifying your deployment configuration to improve performance or tune it to the specific needs of your end users. To test the impact of different features and compare RDP 7.0 to the previous RDP 6.1 version, we performed a variety of tests by using automated and simulation tools to demonstrate the user scenarios outlined in this white paper. These tests are broken down into two broad groups: a set that simulated a user working with actual Microsoft® Office applications at realistic speeds, and a set of multi-media scenarios that simulated a rich media environment commonly expected by today’s and tomorrow’s users. In addition, some of the scenarios have been run at increased network latencies to demonstrate the viability of using RDP in distributed environments, such as in Branch offices or telecommuting scenarios where broadband capabilities exist. Comparisons of previous versions of RDP are covered in previous white papers. However, their results cannot be directly compared to the results presented in this white paper because the test server/client hardware as well as networking, the scenarios, and Office applications have all been updated to reflect current industry expectations. For example, the display sizes used have been updated to reflect higher desktop resolutions.

User ScenariosFive different user scenarios were used to measure the performance of the Remote Desktop Connection (RDC) client. Executive/Complex PowerPoint Scenario. This scenario emulates a user presenting 43 highfidelity …… 此处隐藏：22506字，全部文档内容请下载后查看。喜欢就下载吧 ……