PVFS文件系统吞吐率分析和改进

With the rapid developments of cluster systems,the problem of I/O bottleneck becomes more and moresevere. A good file system is crucial to the whole systems. Throughput,which means the jobs done per unit time ,is animportant index of the systems' performance. In this paper,through testing,the authors find that the throughput ofPVFS(Parallel Virtual File Systems),which now is popular in the field of parallel processing,is abnormally low. Thispaper discusses the cause of this phenomenon and improves the throughput of PVFS drastically by eliminating thisbottleneck. The performance before and after this improvement has also been compared.

一个提高机群文件系统吞吐率的方法及其实现

随着工作站机群系统的迅猛发展,I/O瓶颈问题也日益严重。性能优良的机群文件系统对机群系统而言至关重要。吞吐率是指在单位时间内所处理的作业数,它是评价系统性能的一个重要指标。论文提出用路径名的多成分查找来提高文件系统的创建删除吞吐率,给出并在PVFS上实现了一个路径名多成分查找方法。文章的最后对PVFS进行了优化前后的性能比较,并给出了自己的结论。

NFS和PVFS文件系统吞吐率分析

随着工作站机群系统的迅猛发展,I/O瓶颈问题也日益严重。性能优良的机群文件系统对机群系统而言至关重要。吞吐率是指在单位时间内所处理的作业数,它是评价系统性能的一个重要指标。该文首先简要介绍了NFS和PVFS这两个比较有代表性的文件系统,然后比较了NFS和PVFS的吞吐率,给出了详细的测试数据。最后对NFS、PVFS吞吐率差异的产生原因和影响吞吐率的关键因素进行了较详细的分析,并给出了自己的结论。