From: John Scalia <jayknowsunix@gmail.com>
To: Michel SALAIS <msalais@msym.fr>
Cc: 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 16:39:04 -0400
Message-ID: <B824B1DB-5868-4982-BA8B-FF607CE0EA39@gmail.com> (raw)
In-Reply-To: <006701d7c5f0$e4ddc100$ae994300$@msym.fr>
References: <006701d7c5f0$e4ddc100$ae994300$@msym.fr>
That would be news to me. Where I currently work we’ve had to do that on several occasions as many of our dbs are in the multi- multi- terabyte range, but some are just references without a lot of traffic.
Sent from my iPad
> On Oct 20, 2021, at 4:27 PM, Michel SALAIS <msalais@msym.fr> wrote:
>
> 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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Subject: Re: Understanding was terminated by signal 9: Killed
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