[H-GEN] Hyperthreading and CPU utilisation

Kris Amy kris at lunadawn.net
Mon Aug 25 18:26:42 EDT 2003


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I have a HT box at work and for some things it actually runs slower
running 2 threads than just a single. An example of this is some prelim
test on ECC

$ ./ecc-static -bench 1
Benchmode: enabled.
Computation Threads: 1

Benchmark: 1048576 iterations in 2.213935 seconds. That is ~473625 iters/sec.

$ ./ecc-static -bench 2
Benchmode: enabled.
Computation Threads: 2

Benchmark: 1048576 iterations in 5.141547 seconds. That is ~203942 iters/sec.
Benchmark: 1048576 iterations in 5.208848 seconds. That is ~201307 iters/sec.


Kris

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