Tag Archives: HyperThreading

HyperThreading: What is it and does it benefit ESXi?

Many times I come across the question of HyperThreading and its benefits – either in personal computing, but more importantly over the last few years, virtualization. I’d like to talk about what HyperThreading is for a moment, and show you if it benefits the virtualized environment.

What is HyperThreading?

Today, you see HyperThreadng (HT) technology is present on almost every Intel processor, be it Xeon or Core i3/i5/i7 Series. Basically, it splits one physical core to two logical cores, but the term splitting is somewhat inaccurate and confuses many consumers. Thinking that when they run a 2.5GHz 4-core, HyperThreaded CPU, they immediately have 8 effective cores carrying the full processing capability of 20 GHz. Mainly because when you say you split something, you think that this has been divided to two equal parts (or at least that’s what I think, anyways). Continue reading