Amit Kapila <amit.kapil...@gmail.com> writes: >> It is possible that MAXALIGN stuff is playing a role here and or the >> background transaction stuff. I think if we go with the idea of >> testing spill_txns and spill_count being positive then the results >> will be stable. I'll write a patch for that.
Here's our first failure on a MAXALIGN-8 machine: https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=grison&dt=2020-10-13%2005%3A00%3A08 So this is just plain not stable. It is odd though. I can easily think of mechanisms that would cause the WAL volume to occasionally be *more* than the "typical" case. What would cause it to be *less*, if MAXALIGN is ruled out? regards, tom lane
