pthread_mutex_lock/unlock performance?

[Mojmir Svoboda]

morning, Corinna

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

> Bookkeeping overhead? 

excuse my unfamiliarity with the matter, but i have no exact idea what
bookkeping could be. could you elaborate the answer more, please?
or point me to some article/documentation where i can read more?

> Just have a look into the Cygwin source.

yes, that's first place i tried to look, but got little disoriented
with the _ and __ versions of the pthread_mutex_lock. i've eventually
finished in __pthread_lock. am i on the right track?

> If you want to speed up Cygwin's pthread implementation, feel free to
> contribute:  http://cygwin.com/contrib.html

well i'm using windows and cygwin for few months so i quite don't feel 
ready... yet ;)

best regards,
Mojmir

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