Improving Rollback-Recovery Efficiency by Tuning Pessimism Grain
Wide-area systems are becoming a popular infrastructure for long-running applications. Rollbackrecovery, as a common technology for fault tolerance and load balance, must meet the challenges of scalability and inherent variability in such applications. Most of the rollback-recovery protocols, however, are poor in scalability. Although pessimistic message logging protocols have no such problem, their fault-free overhead sometimes is prohibitive. Aiming at good scalability and acceptable overhead, this paper introduces the concept of pessimism grain and presents a coarse-grained pessimistic message-logging scheme. The paper also evaluates the impact of pessimism grain on the performance of the recovery scheme. Experimental results show that pessimism grain is one of the key configuration parameters to reach a desired performance level. In practice, the proper pessimism grain should be selected based on the characteristics of the applications.
rollback recovery scalability performance evaluation protocol optimization
YANG Jinmin ZHANG Dafang LI Kin Fun CHENG Jing
Software School,Hunan University,Changsha 410082,China Department of Electrical and Computer Engineering,University of Victoria,BC,Canada
国内会议
北京
英文
8-13
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）