[PATCH][BZ #13065] New pthread_barrier algorithm to fulfill barrier destruction requirements.

[Torvald Riegel]

On Tue, 2015-12-22 at 17:36 -0600, Paul E. Murphy wrote:
> 
> On 12/21/2015 02:34 PM, Torvald Riegel wrote:
> > On Fri, 2015-12-18 at 17:47 -0600, Paul E. Murphy wrote:
> >> Otherwise, it looks good to me, and seems like a good improvement to
> >> have. Though, a more experienced reviewer may have more to say. This
> >> is a bit more complicated than its predecessor. I'll test it on PPC
> >> next week.
> > 
> > Thanks!
> 
> Tested out fine on POWER8/PPC64LE.

Thanks for testing!

> I was curious what the performance
> difference might be, so I slapped together the attached program. It
> showed about 25% improvement with 64 thread/64 count/100000 iter input
> on a 16 core machine.

Nice.  I'd hope that when adding proper spinning, we should be able to
improve performance / scalability further.  Do you perhaps want to add
your test to our microbenchmarks?