Re: Weird failure in explain.out with OpenBSD

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Michael Paquier <michael(at)paquier(dot)xyz>
Cc: Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Weird failure in explain.out with OpenBSD
Date: 2020-12-29 15:20:43
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Michael Paquier <michael(at)paquier(dot)xyz> writes:
> Buildfarm member gombessa just had an interesting failure:
> - Execution Time: N.N ms
> + Execution Time: -N.N ms
> Not sure what to think about that, as this implies the calculation of
> a negative execution time.

Yeah, I saw that. I notice that gombessa uses

'HEAD' => [
'force_parallel_mode = regress'

so my guess is that something messed up in transmitting or combining a
parallel worker's execution time. No idea how to narrow it down more
than that.

regards, tom lane

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