dcfs

The metadata throughput of DCFS is 7.391 times as PVFS on average.

DCFS元数据吞吐率的性能平均比PVFS高6.391倍；

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With the design and implementation of DCFS ( Dawning Cluster File System), this dissertation deeply discusses the key technologies of a cluster file system and studies problems in designing the servers of a cluster file system.

本文结合曙光机群文件系统DCFS的设计和实现，对机群文件系统设计的关键问题进行了讨论，并针对机群文件系统服务器设计的几个问题进行了研究。

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Design and implement DCFS on the Dawning 4000L Cluster. Present methods to evaluate a cluster file system and define scalability of read/ write and metadata operations.

在曙光4000L上设计并实现曙光机群文件系统DCFS，给出了机群文件系统性能评价的方法，定义了读写带宽性能和元数据吞吐率的可扩展性度量。

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Load-Balance Policy in DCFS, the Dawning Cluster Filesystem

曙光机群文件系统DCFS负载平衡策略

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This dissertation designs a metadata consistency protocol according to the metadata placement policy and cache management in DCFS. This protocol ensures the consistency of metadata in a cluster file system and has acceptable cost. 4.

作者结合DCFS元数据分布策略和元数据缓存管理设计了元数据一致性协议，该协议保证了元数据一致性，分析表明其开销是可以接收的。

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Finally the helix double-clad fiber is discussed by using this method, and the conclusion is that it is better than other truncated inner cladding DCFs.

最后用这种方法对螺旋型双包层光纤进行分析，得出它比一般缺陷型双包层光纤优异的结论。

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And the overall response time of DCFS is 18.2 % as PVFS in the synthesis workload experiment.

DCFS在综合负载测试中表现出比PVFS更 好的性能,全局响应时间为PVFS的18.2%.

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And the overall response time of DCFS is 18.2% as PVFS in the synthesis workload experiment.

DCFS在综合负载测试中表现出比PVFS更好的性能，全局响应时间为PVFS的18.2%。

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