@inproceedings{528cdf72c0ee45868e7b550a785dba4b,
title = "QoSFM: QoS support for metadata I/O in parallel file systems",
abstract = "Large parallel file systems (PFSs) must service multiple independent workloads concurrently. Workloads often require different quality of service (QoS) of metadata I/O. However, existing PFSs are unable to differentiate metadata I/O from different workloads. There are many researches on QoS support of storage system, they do not focus on metadata I/O of PFSs as one metadata I/O can have several sub-operations and different sub-operations have different access size. In addition, users cannot specify metadata QoS requirements without a suitable QoS specification. This paper presents a novel scheme QoSFM (QoS Support for Metadata) to support metadata I/O QoS in PFSs. QoSFM allows users to specify workloads' metadata QoS requirements through our two-layered QoS specification mechanism. QoSFM can dynamically translate the workload-level goals into system resource needs such as service time per time window and sub-operation latency. Client-side controllers throttle the metadata I/O based on service time allocation to meet the throughput goal while metadata servers (MDSs) reorder the sub-operations based on deadlines to meet the latency goal. Extensive simulations show that QoSFM can effectively satisfy workload-level metadata I/O QoS requirements. Meanwhile, results also show that QoSFM has low overhead.",
keywords = "Metadata I/O, Parallel file system, QoS, Resource allocation",
author = "Limin Xiao and Ke Xie and Guoying Li and Li Ruan and Xiuqiao Li",
year = "2014",
doi = "10.1109/HPCC.and.EUC.2013.14",
language = "英语",
isbn = "9780769550886",
series = "Proceedings - 2013 IEEE International Conference on High Performance Computing and Communications, HPCC 2013 and 2013 IEEE International Conference on Embedded and Ubiquitous Computing, EUC 2013",
publisher = "IEEE Computer Society",
pages = "29--38",
booktitle = "Proceedings - 2013 IEEE International Conference on High Performance Computing and Communications, HPCC 2013 and 2013 IEEE International Conference on Embedded and Ubiquitous Computing, EUC 2013",
address = "美国",
note = "15th IEEE International Conference on High Performance Computing and Communications, HPCC 2013 and 11th IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2013 ; Conference date: 13-11-2013 Through 15-11-2013",
}