计算机工程与应用2012，Vol.48Issue(17)：88-92,5.DOI:10.3778/j.issn.1002-8331.2012.17.018
并行文件系统Lustre细粒度I/O性能优化
Performance optimization of fine-grained I/O in parallel file system Lustre
李林林 1吴万国 1孙良旭1
作者信息
- 1. 辽宁科技大学软件学院,辽宁鞍山114045
- 折叠
摘要
Abstract
Performance of coarse-grained I/O is good in parallel file system Lustre, performance of fine-grained I/O is relatively low compared with coarse-grained I/O, so performance optimization of fine-grained I/O is the key problem to improve I/O performance of overall system. On the research and analysis of Lustre I/O mode, fine-grained I/O service process and page replacement algorithm etc, it puts forward fine-grained priority FGF-LRU algorithm. It maximizes to retain fine-grained I/O pages in page cache of OST terminal and client terminal, reduces the page sinking speed caused by fine-grained I/O, extends time when fine-grained I/O page is in memory, thereby reduces the times of disk accesses and reduces disk access cost. It verifies the effectiveness of FGF-LRU algorithm based on comparison and analysis of the test data. It improves performance of fine-grained I/O without affecting performance of coarse-grained I/O, and ultimately improves I/O performance of the overall system.关键词
并行文件系统/Lustre/细粒度/输入/输出(I/O)Key words
parallel file system/ Lustre/ fine-grained/ Input/Output(I/O)分类
信息技术与安全科学引用本文复制引用
李林林,吴万国,孙良旭..并行文件系统Lustre细粒度I/O性能优化[J].计算机工程与应用,2012,48(17):88-92,5.
