[Bug 54979] Futexes which protect memory allocation congest, causing 100x performance degradation

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54979

--- Comment #9 from Zeb Figura  ---
(In reply to John Nagle from comment #8)
> Any progress on this?
>
> You're not likely to get as good a bug report from anyone else. 
> If this happens in some game, they won't have source code. I do,
> and was able to see the problem in GDB. There's probably some
> "My Game Hangs" bug report that's really this problem, but 
> can't be diagnosed.

I understand, I'm thankful for providing a clear bug report. The thing is, this
bug is not going to be fixed until someone has an idea for how to write a fast
user-space wait queue that doesn't allocate and whose "head" can fit in a
pointer.