| 以太网MTU与IP SAN存储系统性能 |
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| 引用本文： | 胡风华,侯紫峰,祝明发.以太网MTU与IP SAN存储系统性能[J].计算机工程,2005,31(4):117-119. |
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| 作者姓名： | 胡风华 侯紫峰 祝明发 |
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| 作者单位： | 中国科学院研究生院计算技术研究所,北京,100080;中国科技大学研究生院,合肥,230026 |
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| 摘 要： | 基于IP SAN的网络存储技术主要使用iSCSI协议。iSCSI协议基于廉价的高速以太网技术。以太网最大传输单位MTU对于高速网络的性能有很大影响。为了提高性能，提出了9000B的Jumbo帧。该文旨在研究以太网帧MTU大小与iSCSI性能的关系。分别在使用普通MTU和Jumbo帧MTU两种情况下对iSCSI的性能进行了测试，对测试结果进行比较和分析，得出的结论是：增加以太网的MTU是改善iSCSI的性能的有效手段，它能降低CPU占用率，并提升读写带宽，在大块数据传输时这种改善尤为显著。
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| 关 键 词： | IP SAN Jumbo帧 iSCSI |
| 文章编号： | 1000-3428(2005)04-0117-03 |
Ethernet MTU and IP SAN Storage System Performance |
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| HU Fenghua,HOU Zifeng,ZHU Mingfa.Ethernet MTU and IP SAN Storage System Performance[J].Computer Engineering,2005,31(4):117-119. |
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| Authors: | HU Fenghua HOU Zifeng ZHU Mingfa |
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| Affiliation: | HU Fenghua1,HOU Zifeng1,ZHU Mingfa2 |
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| Abstract: | IP SAN based networking storage technology mainly employs iSCSI. iSCSI runs on inexpensive high speed Ethernet. The MTU of Ethern affects the performance of high speed network greatly. In order to improve transmission performance, Jumbo frame which can accommodate more tha 9000 bytes is put forward. This paper studies the relation between MTU and iSCSI performance. In this paper, the performance of iSCSI under norm MTU and Jumbo frame are tested respectively, and the result is compared and analyzed, finally a conclusion is drawn: increasing MTU of Ethernet is a effective means to promote iSCSI performance, it can lower CPU utilization, and increase read-write bandwidth, especially when transferring a bulk of data. |
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| Keywords: | IP SAN Jumbo frame iSCSI |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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