pthread_mutex_lock/unlock performance?
Corinna Vinschen
corinna-cygwin@cygwin.com
Thu Mar 13 09:31:00 GMT 2008
On Mar 13 10:32, Mojmir Svoboda wrote:
> 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 :)
Bookkeeping overhead? Just have a look into the Cygwin source. If you
want to speed up Cygwin's pthread implementation, feel free to
contribute: http://cygwin.com/contrib.html
Corinna
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Corinna Vinschen Please, send mails regarding Cygwin to
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