Optimization of iSCSI Remote Storage Access through Multiple Layers

Higa, Reika; Matsubara, Kosuke; Okamawari, Takao; Yamaguchi, Saneyasu; Oguchi, Masato

doi:10.1109/waina.2009.61

Cited by 3 publications

(4 citation statements)

References 2 publications

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“…In our previous work [3], we applied various techniques, including parameter optimization for iSCSI, TCP, and network interface card, to improve the iSCSI write access performance under high latency environment. [4,5] The schematic diagram of our experimental setup is shown in Figure 2.…”

Section: A Experimental Environmentmentioning

confidence: 99%

“…To mitigate the problem, several methods to improve the iSCSI throughput were proposed [2][3][4]. In our previous work [3], we found that the obtained performance for iSCSI sequential write is far below than the theoretically expected value in the high latency environment. Basically, iSCSI throughput cannot reach beyond the limit performance of TCP/IP which is laid at the lower layer.…”

Section: Introductionmentioning

confidence: 99%

“…It is pointed out in previous papers that the iSCSI has a problem when it is used over long distance, i.e. high latency environment due to the complicated protocol stack [2,3]. To mitigate the problem, several methods to improve the iSCSI throughput were proposed [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…high latency environment due to the complicated protocol stack [2,3]. To mitigate the problem, several methods to improve the iSCSI throughput were proposed [2][3][4]. In our previous work [3], we found that the obtained performance for iSCSI sequential write is far below than the theoretically expected value in the high latency environment.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Performance Improvement of iSCSI Remote Storage Access through Optimization of Multiple Layers

Oguchi¹,

Higa²,

Matsubara³

et al. 2013

JSW

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iSCSI is one of the most popular protocols among the storage area network (SAN) working on an IP network. iSCSI is a standard to encapsulate a SCSI command into a TCP/IP packet, thus we can make an access to a storage system with commoditized IP devices only. In this paper, iSCSI sequential write access for a remote backup system is focused. It is well known that iSCSI experiences performance degradation under a high latency environment. The storage access by iSCSI has multiple hierarchical protocols. Due to this complicated structure, it is very difficult to identify the performance bottleneck that causes the degradation. Therefore, system tools which can analyze the complicated layered structure are required. We have developed system tools that enable us to monitor the hierarchical protocols. As a result, we have identified the cause of the iSCSI performance degradation problem. We then fixed the problem and confirmed that one can obtain the performance close to the theoretical limit

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Section: A Experimental Environmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%