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Thread: semaphore access speed
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Old 09-25-2008
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otheus otheus is offline Forum Staff  
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Quote:
Originally Posted by migurus View Post
Q: Why would SHM parameters affect semaphore performance?
*Possibly* because of the number of page tables and structures required to make use of all that memory. It might result in every op requiring two to three cache misses per call. If there are no cache misses, because shmem is less, then maybe it takes 3 times as fast. Jim??