A Remote Mirroring Architecture with Adaptively Cooperative Pipelining

摘要

In recent years, the remote mirroring technology has attracted increasing attention. In this paper, we present a novel adaptively cooperative pipelining model for remote mirroring systems. Unlike the traditional pipelining model, this new model takes the decentralization of processors into account and adopts an adaptive batching strategy to alleviate imbalanced pipeline stages caused by this property. To release the heavy load on CPU exerted by compression, encryption, TCP/IP protocol stack and so on, we design fine-grained pipelining, multi-threaded pipelining and hybrid pipelining. We implement a remote mirroring prototype based on Linux LVM2. The experimental results show that, the adaptively cooperative pipelining model balances the primary and the backup sites - the two stages of the pipeline effectively, and fine-grained pipelining, multi-threaded pipelining and hybrid pipelining improve the performance remarkably.