On Sun, Aug 28, 2022 at 1:39 PM Andres Freund <andres@anarazel.de> wrote:
> On 2022-08-27 18:02:40 -0700, Andres Freund wrote:
> > FWIW, I did notice that netbsd does have working unnamed semaphores. I don't
> > know how long ago they were added, but they apparently didn't work quite right
> > in 2018 [1]. No meaningful performance chance in the main regression tests,
> > I'll run a concurrent check world comparison in the background...
>
> Unnamed ones are substantially worse unfortunately. On an 8 core netbsd 9.3
> VM:
I could update my experimental patch to add home made semaphores using
atomics and futexes. It needs NetBSD 10, though. Also works on
OpenBSD and macOS.
