Date: Thu, 29 May 2008 10:28:53 -0700 From: Julian Elischer <julian@elischer.org> To: arch@freebsd.org Subject: all mutexes -> read-write locks? Message-ID: <483EE7D5.5050408@elischer.org>
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it has been mentioned several times that through the evolution of the locking primitives it has come to be that mutexes and exclusively acquired reader-writer locks are almost the same in terms of overhead and that it might be a good move to define all mutexes to be actually just that. this would allow people to slowly go through the system, catching low hanging fruit by converting some of the mutex operations to reader acquisitions wherever a writer is not required, thus reducing general system contention. Is there any thought on this? Last I heard jhb had confirmed that it was feasible..
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