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What is Hyper-Threading?
Hyper-Threading technology is an innovative design from Intel that enables multi-threaded software applications to process threads in
parallel within each processor resulting in increased utilization of processor execution resources. As a result, an average improvement of
~40% in CPU resource utilization yields higher processing throughput.
How Hyper-Threading Works
A form of simultaneous multi-threading technology (SMT), Hyper-Threading technology allows multiple threads of software applications to
be run simultaneously on one processor by duplicating the architectural state on each processor while the same processor execution
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resources
represents how a Hyper-Threading based
processor
multiprocessor.
shows a traditional multiprocessor system with
two physical processors. Each processor has its
own independent execution resources and
architectural state. The right-hand configuration
represents an Intel Hyper-Threading technology
based processor. You can see that the
architectural
duplicated, while the execution resources is
shared.
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The
figure
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differentiates
a
traditional
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left-hand
configuration
state
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each
processor
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