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A comment on Go as an alternative to Node.js for very fast servers . Parent comment

Re:Go as an alternative to Node.js for very fast servers by spullara on Wednesday August 14, 2013 @01:27PM (#6212906)
There is a huge difference between the two. Hyperthreaded cores only give you a speed up in specific situations where additional work can be squeezed into the pipeline.

http://en.wikipedia.org/wiki/Hyper-threading

The speedup is very work dependent and in practice for things like web pages and api servers you generally only get another 20-40% of performance from them rather than a full 100%.

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Re:Go as an alternative to Node.js for very fast servers by thrownaway2424 on Wednesday August 14, 2013 @01:44PM (#6213031)
In other words, you have no idea what the difference is.

A hyperthreaded Intel CPU has M functional units and N decode/issue pipelines.

A non-hyperthreaded Intel CPU has M' functional units and N' decode/issue pipelines.

A hyperthreaded Intel CPU with hyperthreading disabled has M functional units and N/2 decode/issue pipelines.

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