The Cost Performance of HyperThreading Technology

Authors: Xiao Zhang Ani Li Boyang Zhang Wenjie Liu Xiaonan Zhao Zhanhuai Li

Publish Date: 2016/6/25

Volume: , Issue: , Pages: 581-589

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Abstract

HyperThreading or HT for short is a technology used in some Intel CPUs Intel claims that it can use processor resources more efficiently Many past studies have evaluated the performance of the technology in HPC clusters In this paper we discuss the advantages and disadvantages of HyperThreading using in the cloud computing systems We evaluate the performance and energy cost of Intel CPU with HyperThreading enabled and disabled on virtualization environment Our results show that HyperThreading technology can get better performance in most cases on a physical machine The performance of a single core in a virtual machine is slightly lower when HT is enabled But it doubles the number of available coresThis work was supported by the National Hightech RD Program of China 863 Program under Grant No2013AA01A215 and the National Natural Science Foundation of China under Grant No61472323 No61303037 This work was also supported by the Fundamental Research Funds for the Central Universities under Grant No3102015JSJ0009

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