On Thu, Aug 31, 2023 at 2:32 PM Thomas Munro <thomas.mu...@gmail.com> wrote: > On Thu, Aug 31, 2023 at 12:16 AM Tomas Vondra > <tomas.von...@enterprisedb.com> wrote: > > I have another case of this on dikkop (on 11 again). Is there anything > > else we'd want to try? Or maybe someone would want access to the machine > > and do some investigation directly?
Hmm. No conclusion tonight but I think it's weird. We have: bsd@generic:/mnt/data/buildfarm $ ps x -O wchan | grep 52663 52663 select - Is 0:07.40 postgres: bsd regression [local] SELECT (postgres) 52731 select - Is 0:00.09 postgres: parallel worker for PID 52663 (postgres) 52732 select - Is 0:00.06 postgres: parallel worker for PID 52663 (postgres) 81525 piperd 0 S+ 0:00.01 grep 52663 wchan=select means sleeping in poll()/select(). bsd@generic:/mnt/data/buildfarm $ procstat -i 52732 | grep USR1 52732 postgres USR1 P-C bsd@generic:/mnt/data/buildfarm $ procstat -j 52732 | grep USR1 52732 100121 postgres USR1 -- We have a signal that is pending and not blocked, so I don't immediately know why poll() hasn't returned control.
