On Mon, Feb 13, 2017 at 07:12:40PM +0100, Paolo Bonzini wrote:
> Running a very small critical section on pthread_mutex_t and CoMutex
> shows that pthread_mutex_t is much faster because it doesn't actually
> go to sleep. What happens is that the critical section is shorter
> than the latency of
Running a very small critical section on pthread_mutex_t and CoMutex
shows that pthread_mutex_t is much faster because it doesn't actually
go to sleep. What happens is that the critical section is shorter
than the latency of entering the kernel and thus FUTEX_WAIT always
fails. With CoMutex
