Please see: http://www.unix.com/high-level-programming/81568-semaphore-access-speed-...
Though the 2.6.18 kernel is indeed faster, my benchmarks indicate there is far more than this. If anyone can provide similar benchmarks of a XEON machine running 2.6.18, you can add to this discussion.
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Good answer. Not good enough.
Please see: http://www.unix.com/high-level-programming/81568-semaphore-access-speed-...
Though the 2.6.18 kernel is indeed faster, my benchmarks indicate there is far more than this. If anyone can provide similar benchmarks of a XEON machine running 2.6.18, you can add to this discussion.