Hi, On 2023-02-06 19:51:19 +0100, Tomas Vondra wrote: > > No. The only thing the machine is doing is > > > > while /usr/bin/true; do > > make check > > done > > > > I can't reduce the workload further, because the "join" test is in a > > separate parallel group (I cut down parallel_schedule). I could make the > > machine busier, of course. > > > > However, the other lockup I saw was when using serial_schedule, so I > > guess lower concurrency makes it more likely. > > > > FWIW the machine is now on run ~2700 without any further lockups :-/ > > Seems it was quite lucky we hit it twice in a handful of attempts.
Did you cut down the workload before you reproduced it the first time, or after? It's quite possible that it's not reproducible in isolation. Greetings, Andres Freund
