The "benchmarks game" has a thread ring benchmark which can compare conditions/mutexes/semaphores, because for some applications they're interchangeable: 4-thr

The "benchmarks game" has a thread ring benchmark which can compare conditions/mutexes/semaphores, because for some applications they're interchangeable: 4-thread x64: mutex (480s): http://benchmarksgame.alioth.debian.org/u64q/program.php?test=threadring&lang=gcc&id=1 http://benchmarksgame.alioth.debian.org/u64q/program.php?tes... sem_wait (476s): http://benchmarksgame.alioth.debian.org/u64q/program.php?test=threadring&lang=gcc&id=2 http://benchmarksgame.alioth.debian.org/u64q/program.php?tes... cond_wait (271s - runs single-threaded?) http://benchmarksgame.alioth.debian.org/u64q/program.php?test=threadring&lang=gcc&id=3 http://benchmarksgame.alioth.debian.org/u64q/program.php?tes... 1-thread x86: mutex (136s): http://benchmarksgame.alioth.debian.org/u32/program.php?test=threadring&lang=gcc&id=1 http://benchmarksgame.alioth.debian.org/u32/program.php?test... sem_wait (131s): http://benchmarksgame.alioth.debian.org/u32/program.php?test=threadring&lang=gcc&id=2 http://benchmarksgame.alioth.debian.org/u32/program.php?test... cond_wait (156s): http://benchmarksgame.alioth.debian.org/u32/program.php?test=threadring&lang=gcc&id=3 http://benchmarksgame.alioth.debian.org/u32/program.php?test...