Acta Scientiarum Naturalium Universitatis Pekinensis

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Application-Specific Graphical Caching Scheme for Thin-Client Computing

ZHANG Yang, GUAN Xuetao, CHENG Xu   

  1. Microprocessor Research and Development Center, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871;
  • Received:2010-03-23 Online:2011-05-20 Published:2011-05-20


张杨, 管雪涛, 程旭   

  1. 北京大学信息科学技术学院微处理器研究开发中心, 北京100871;

Abstract: The authors investigate raw pixel redundancy caused by repainting application’s graphical objects and propose an application-specific graphical caching scheme to recognize and reduce this class redundancy. Effectiveness of the scheme is proved by implementation in frame buffer based thin-client system VNC. The experimental results show that the scheme could reduce about 17.8%-22.7% network traffic and most of high latencies caused by screen redundancy for the tested scenarios. Meanwhile the scheme costs only little additional computation and memory resource.

Key words: thin-client computing, screen redundancy, application-specific graphical caching, bandwidth optimization

摘要: 研究由重绘应用程序的图形对象产生的像素冗余, 提出利用应用特定缓存机制识别并减少此类冗余, 并在 VNC 系统中实现了这一机制。试验表明该机制能够减少约17.8%~22.7%的网络通信, 并能降低大部分由此类冗余引起的高延迟;同时该机制还具有较低的计算及存储开销。

关键词: 瘦客户计算, 屏幕冗余, 应用特定图形缓存, 带宽优化

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