Application-level Buffer Reclaim Policy Designed for Storage System

Presented a priority-based application-level buffer reclaim policy-PARP designed for the buffer management unit in storage system.Based on partitioned buffer management model,it can differentially reclaim buffer resource from multiple applications according to their priorities.This realizes the dynamically adjustment of the application's buffer capacity to provide application-level buffer management semantics.Experiment results show that PARP effectively supports application priority in real system,which can not only be utilized to achieve storage QoS but can also be used to optimize the overall storage performance.