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arXiv 1408.0510cs.DC
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关于“云可用性的端到端评估需求”的说明

A note on "The Need for End-to-End Evaluation of Cloud Availability"

Maurizio Naldi

摘要:

云可用性是云平台的主要性能参数,但商业平台上的测量很少,其中大多数依赖于出现在专业网站,提供商仪表板或一般媒体上的中断报告。Hu等人最近在PAM 2014会议上发表的一篇论文报告了测量活动的结果。本说明概述了该文件的结果,着重指出了不准确的原因和一些可能的改进。特别是,使用低探测频率可能导致无法检测到短期中断,以及中断持续时间统计的不准确估计。克服这种缺乏准确性的问题,对于正确评估违反SLA的情况和建立保险索赔的基础至关重要。

英文摘要:

Cloud availability is a major performance parameter for cloud platforms, but there are very few measurements on commercial platforms, and most of them rely on outage reports as appeared on specialized sites, providers' dashboards, or the general press. A paper recently presented at the PAM 2014 conference by Hu et alii reports the results of a measurement campaign. In this note, the results of that paper are summarized, highlighting sources of inaccuracy and some possible improvements. In particular, the use of a low probing frequency could lead to non detection of short outages, as well as to an inaccurate estimation of the outage duration statistics. Overcoming this lack of accuracy is relevant to properly assess SLA violations and establish the basis for insurance claims.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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