From: Michel SALAIS <msalais@msym.fr>
To: 'John Scalia' <jayknowsunix@gmail.com>
To: 'Tom Lane' <tgl@sss.pgh.pa.us>
Cc: 'Wells Oliver' <wells.oliver@gmail.com>
Cc: 'pgsql-admin' <pgsql-admin@postgresql.org>
Subject: RE: Understanding was terminated by signal 9: Killed
Date: Wed, 20 Oct 2021 22:27:23 +0200
Message-ID: <006701d7c5f0$e4ddc100$ae994300$@msym.fr> (raw)
In-Reply-To: <AEEF347B-39EC-41FC-8AC9-2AFA54F71391@gmail.com>
References: <2009137.1634680908@sss.pgh.pa.us>
<AEEF347B-39EC-41FC-8AC9-2AFA54F71391@gmail.com>
Be careful!
I am not sure but upgrade for a larger instance can't be temporary. I think you can't downgrade to the original instance class thereafter...
--
Michel SALAIS
-----Message d'origine-----
De : John Scalia <jayknowsunix@gmail.com>
Envoyé : mercredi 20 octobre 2021 01:12
À : Tom Lane <tgl@sss.pgh.pa.us>
Cc : Wells Oliver <wells.oliver@gmail.com>; pgsql-admin <pgsql-admin@postgresql.org>
Objet : Re: Understanding was terminated by signal 9: Killed
You could always change the size of the RDS instance to something larger than what it currently is running, even just temporarily.
Sent from my iPad
> On Oct 19, 2021, at 6:01 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Wells Oliver <wells.oliver@gmail.com> writes:
>> In an RDS instance with 16GB RAM, I ran a long query which started by
>> setting temp_buffers to 16GB, so I think I plum ran out of memory,
>> but can anyone point me in a different direction if the following log
>> messages indicate something else is awry?
>
> Yeah, this:
>
>> 2021-10-19 21:10:37 UTC::@:[24752]:LOG: server process (PID 25813)
>> was terminated by signal 9: Killed
>
> almost certainly indicates the Linux OOM killer at work. If you were
> running your own system I'd point you to [1], but I doubt that RDS
> lets you put your hands on the relevant knobs.
>
> regards, tom lane
>
> [1]
> https://www.postgresql.org/docs/current/kernel-resources.html#LINUX-ME
> MORY-OVERCOMMIT
>
>
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To: pgsql-admin@postgresql.org
Cc: msalais@msym.fr, jayknowsunix@gmail.com, tgl@sss.pgh.pa.us, wells.oliver@gmail.com
Subject: RE: Understanding was terminated by signal 9: Killed
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