Adaptive Power-Aware Cache Management for Mobile Computing Systems

Prefetch can be used to reduce the query latency and improve the bandwidth utilization of cache invalidation schemes. However, prefetch consumes power. In this paper, we propose a power-aware cache management to address this issue. Based on a novel prefetch-access ratio concept, the proposed scheme can dynamically optimize performance or power based on the available resources and performance requirements. Simulation results show that our solution not only improves the cache hit ratio, the throughput, and the bandwidth utilization, but also reduces the query delay and the power consumption.