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How good is hyperthreading?
Author: Agner Fog Date: 2009-12-15 01:57
Fred Bosick wrote:
A processor with Hyperthreading enabled puts out more heat for a given load.
This claim must be tested.

One needs to obtain a program called "crashme" by some guy named Carrette. It spawns processes and hands the processor garbage data to execute in them. [...] When I transferred the system to reside atop a 950, it crashed within an hour. After I turned off Hyperthreading, it never crashes even after running all night.
Interesting. We need to know whether this is an operating system issue or a hardware bug. It would be nice to test it on different operating systems and with different microprocessors (Core i7, Atom).
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