基于SPICE协议的USB重定向通道传输机制优化研究

Research on Mechanism Optimization of USB Redirection Transmission Based on SPICE Protocol

摘要: 随着云计算和虚拟化技术的不断发展，基于SPICE (Simple Protocol for Independent Computing Environment)的桌面云被广泛应用在各种应用场景。针对目前基于SPICE协议的USB重定向数据传输性能受限的问题，详细分析了影响USB重定向识别过程数据传输性能的因素，提出了优化方案。方案通过优化USB控制器、数据压缩和磁盘读写IO三个方面，提升了USB重定向通道识别过程的整体性能。实验对USB重定向识别的过程进行验证，结果表明，该方案有效地减少了USB设备识别的等待时间，改善了USB重定向的性能，提升了用户使用体验。

Abstract: With the development of cloud computing and virtualization technology, desktop cloud based on SPICE (Simple Protocol for Independent Computing Environment) has been widely applied in different scenarios. In view of the limited performance of USB redirection data transmission based on SPICE protocol, we analyzed the factors affecting data transmission performance of USB redirection recognition process, and proposed an optimization scheme. The scheme improved overall performance of the USB redirection recognition process, by optimizing the USB controller, data compression and disk read/write IO. The research results showed that the scheme effectively reduced the waiting time of USB device recognition, improved the performance of USB redirection and enhanced the user experience.