Re: HT Benchmarks (was: /proc/cpuinfo and hyperthreading)

From: H. Peter Anvin (
Date: Mon Dec 16 2002 - 18:50:04 EST

Followup to: <>
By author: "Scott Robert Ladd" <>
In newsgroup:
> From what I can see, HT provides a 0-15% increase in performance, depending
> heavily on the type of code being run. In other words, HT helps, but it is
> *no* substitute for true multiple processors. And it is ONLY of value when
> an SMP kernel is in use.

It would be interesting to compare an UP kernel with HT off to an SMP
kernel with the HT on...


<> at work, <> in private!
"Unix gives you enough rope to shoot yourself in the foot."	<>
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