用软件来提高多核处理器性能的方法分析

The method using software to improve the performance of multi-core processors

分析了多核处理器的硬件体系结构，并分析了影响多核处理器性能的最关键两个因素：二级缓存的命中率和处理器线路的利用率。主要分析了如何通过软件方法来提升多核处理器的性能，也就是通过设计操作系统进程调度算法来实现。分析了如何提高上述两个因素的方法。使用这些方法可以将多核处理器的吞吐率提高27％-45％。

This paper shortly analysis the hardware architecture of the multi - core processer, and analysis the most of two factors that influence multi - core processor＇s performance ： one is L2 cache hit ratio, another is processor circuitry＇s utilization ratio, this paper mainly analysis how to using software methods to improve multi - core processor＇s performance. Implementing this method through designing operating systems＇s process scheduler. And has analsised how to improve two factors＇s method.