Matteo Beccati <p...@beccati.com> writes: > On 21/01/2020 02:06, Thomas Munro wrote: >> [1] >> https://www.postgresql.org/message-id/CA%2BhUKGJAC4Oqao%3DqforhNey20J8CiG2R%3DoBPqvfR0vOJrFysGw%40mail.gmail.com
> I had a NetBSD 8.0 VM lying around and I gave the patch a spin on latest > master. > With the kqueue patch, a pgbench -c basically hangs the whole postgres > instance. Not sure if it's a kernel issue, HyperVM issue o what, but > when it hangs, I can't even kill -9 the postgres processes or get the VM > to properly shutdown. The same doesn't happen, of course, with vanilla > postgres. I'm a bit confused about what you are testing --- the kqueue patch as per this thread, or that plus the WaitLatch refactorizations in the other thread you point to above? I've gotten through check-world successfully with the v14 kqueue patch atop yesterday's HEAD on: * macOS Catalina 10.15.2 (current release) * FreeBSD/amd64 12.0-RELEASE-p12 * NetBSD/amd64 8.1 * NetBSD/arm 8.99.41 * OpenBSD/amd64 6.5 (These OSes are all on bare metal, no VMs involved) This just says it doesn't lock up, of course. I've not attempted any performance-oriented tests. regards, tom lane