关键词: 异构系统, MIC协处理器, 动态请求, 调度, Web服务器

Abstract:

To improve the performance, some accelerators, such as MIC co-processors, are added to server-side, which becomes heterogeneous systems consisting of multi-core CPUs and MIC co-processors. However, traditional web server software can not make full use of the heterogeneous systems. In order to solve the problem, this paper proposes a new web server software framework, which can exploit the performance of the heterogeneous systems with multi-core CPUs and MIC co-processors. To improve the performance, the software framework schedules some dynamic requests to MIC co-processors from CPU, and then these dynamic requests can be handled on both CPUs and MIC processors. Meanwhile, the software framework can also keep load balance between multi-core CPUs and MIC co-processors by adopting a load balance algorithm. Simulation experiments show that this software framework is superior to the traditional web server software based on First Come First Served（FCFS） algorithm in aspects of mean response time and throughput.

Key words: heterogeneous system, MIC co-processor, dynamic request, scheduling, web server