共享存储多处理机系统中的多级高速缓存

MULTI-LEVEL CACHE IN SHAREDMEMORY MULTIPROCESSORS

共享存储多处理机系统中，存储子系统的性能是影响整个系统性能的关键之一．我们通过基于访存地址流的模拟，从缺失率、平均访存时间和总线占用三个方面，对共享存储多处理机系统中的两种两级缓存方案做了性能比较，并将它们同没有第二级缓存的情形做了性能比较．

In shared-memory multiprocessor systems, the performance of the memory subsystem is very important to the whole system's performance. By trace-driven simulation, this paper compares the miss ratio, the average access time and the bus utilization of two two-level cache coherence schemes. The performance of the two schemes is also compared with that of a one-level cache system.