Michael Paquier <michael@paquier.xyz> writes:
> Could this be an issue related to the addition of the circular WAL
> decoding buffer, aka 3f1ce97?
I already whined about this at [1].
I've been wondering if the issue could be traced to topminnow's unusual
hardware properties, specifically that it has MAXALIGN 8 even though
it's only a 32-bit machine per sizeof(void *). I think the only
other active buildfarm animal like that is my gaur ... but I've
failed to reproduce it on gaur. Best guess at the moment is that
it's a timing issue that topminnow manages to reproduce often.
Anyway, as I said in the other thread, I can reproduce it on
topminnow's host. Let me know if you have ideas about how to
home in on the cause.
regards, tom lane
[1] https://www.postgresql.org/message-id/111657.1650910309%40sss.pgh.pa.us