Re: Berserk Autovacuum (let's save next Mandrill)

From: David Rowley <dgrowleyml(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, Andres Freund <andres(at)anarazel(dot)de>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Masahiko Sawada <masahiko(dot)sawada(at)2ndquadrant(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Darafei Komяpa Praliaskouski <me(at)komzpa(dot)net>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Michael Banck <mbanck(at)gmx(dot)net>
Subject: Re: Berserk Autovacuum (let's save next Mandrill)
Date: 2020-03-28 21:30:40
Message-ID: CAApHDvrVO4DbwtxDzSrwhTfU=Jd9mREzZgQqDo+pnCXq-RvxTg@mail.gmail.com
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On Sun, 29 Mar 2020 at 06:26, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> David Rowley <dgrowleyml(at)gmail(dot)com> writes:
> > On Sat, 28 Mar 2020 at 17:12, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> wrote:
> >> In the light of that, I have no objections.
>
> > Thank you. Pushed.
>
> It seems like this commit has resulted in some buildfarm instability:
>
> https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lousyjack&dt=2020-03-28%2006%3A33%3A02
>
> apparent change of plan
>
> https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=petalura&dt=2020-03-28%2009%3A20%3A05
> https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=petalura&dt=2020-03-28%2013%3A20%3A05
>
> unstable results in stats_ext test

Yeah, thanks for pointing that out. I'm just doing some tests locally
to see if I can recreate those results after vacuuming the mcv_list
table, so far I'm unable to.

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