pg.ddx.io  pgsql-bugs@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Rainer Tammer <pgsql@spg.schulergroup.com>
Cc: David G. Johnston <david.g.johnston@gmail.com>
Cc: PostgreSQL mailing lists <pgsql-bugs@lists.postgresql.org>
Subject: Re: Postgres 9.2.13 on AIX 7.1
Date: Wed, 25 Aug 2021 12:19:30 -0400
Message-ID: <585489.1629908370@sss.pgh.pa.us> (raw)
In-Reply-To: <5e4f9356-26cc-bd75-4f82-92d26ce575f7@spg.schulergroup.com>
References: <77b4c413-b6ce-f07c-0d8b-a4ec8b5eec88@spg.schulergroup.com>
	<3821572.1628615273@sss.pgh.pa.us>
	<20217971-0a12-6a39-2b54-c13008afc3f0@spg.schulergroup.com>
	<CAKFQuwZV3TR_ou+DXadrYGik2W7vd-kfRwP0F7Q-Wdp_0vt7-g@mail.gmail.com>
	<fe2f0005-da96-1508-6139-d6ac3d99af59@spg.schulergroup.com>
	<582099.1629904402@sss.pgh.pa.us>
	<5e4f9356-26cc-bd75-4f82-92d26ce575f7@spg.schulergroup.com>

Rainer Tammer <pgsql@spg.schulergroup.com> writes:
> It did run the server with auto vacuum disabled for ~ 24h - no server 
> shutdown.
> After re-enabling auto vacuum the server dies in less then 9 hours:

This is just speculation, but it fits the reported facts: somewhere
you've got something that tries to limit the resources consumed by
a background process, and when it decides the limit is exhausted
then it sends SIGINT.  Without autovacuum waking up every so often,
the time for PG-as-a-whole to hit the hypothetical limit would be
much longer.

> Would it be worth adding additional code before every signal to trace 
> the source ID and the target PID as well as the source/target process name?

I will be *mightily* astonished if the signal is coming from
within PG.  The more so since it appears to be happening while
the instance is entirely idle.

			regards, tom lane





view thread (14+ messages)  latest in thread

Message-ID: <585489.1629908370@sss.pgh.pa.us>
Permalink:  ../585489.1629908370@sss.pgh.pa.us/
Also on:    postgresql.org/message-id/585489.1629908370@sss.pgh.pa.us

 · 

reply
Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-bugs@postgresql.org
  Cc: tgl@sss.pgh.pa.us, pgsql@spg.schulergroup.com, david.g.johnston@gmail.com, pgsql-bugs@lists.postgresql.org
  Subject: Re: Postgres 9.2.13 on AIX 7.1
  In-Reply-To: <585489.1629908370@sss.pgh.pa.us>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox