pthread_mutex_lock/unlock performance?

[Mojmir Svoboda]

hello,

i'm runing cygwin (1.5.25?) under win xp sp2 and i ran a simple test
which was supposed to measure the speed of pthread_mutex_lock,
increment, pthread_mutex_unlock compared to interlocked increment and
windows critical section.

the thing is that cygwin's pthread_mutex_lock performs quite lazily - it
takes about seven times more than using native critical section.

i wonder why, of course :)

thanks for your attention,
mojmir

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