Tracing and monitoring large online server clusters for performance analysis, security and maintenance

点击翻译按钮获取中文摘要

In recent years, the Internet and cellular networks have become the center of all interactions from text, voice and video applications to shopping, entertainment, information gathering and government services. This is the case both at home and at work within organizations. The underlying infrastructure has evolved accordingly at an accelerated pace. The newer electronic service centers are built out as clusters of numerous high performance relatively low cost multi-core computers connected through reduntant high speed networks. Furthermore, these clusters are efficiently shared among several different applications which need peak resources at different times. In such a context, where a service is offered "in the cloud" by virtual machines running on different computers at different times, it becomes extremely difficult to monitor and optimize the performance and security of each service.