Re: pthread_mutex_unlock (was Re: sched_yield() makes OpenLDAP slow)

[Helge Hafting]

linux-os (Dick Johnson) wrote:

> To fix the current problem, you can substitute usleep(0); It will
> give the CPU to somebody if it's computable, then give it back to
> you. It seems to work in every case that sched_yield() has
> mucked up (perhaps 20 to 30 here).
>  
Isn't that dangerous?  Someday, someone working on linux (or some
other unixish os) might come up with an usleep implementation where
usleep(0) just returns and becomes a no-op.  Which probably is ok
with the usleep spec - it did sleep for zero time . . .

Helge Hafting
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