Re: unconstrained memory growth in long running procedure stored procedure after upgrading 11-12

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Justin Pryzby <pryzby(at)telsasoft(dot)com>
Cc: Merlin Moncure <mmoncure(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org, Andres Freund <andres(at)anarazel(dot)de>
Subject: Re: unconstrained memory growth in long running procedure stored procedure after upgrading 11-12
Date: 2021-03-31 00:14:22
Message-ID: 3070324.1617149662@sss.pgh.pa.us
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Justin Pryzby <pryzby(at)telsasoft(dot)com> writes:
> On Tue, Mar 30, 2021 at 04:17:03PM -0500, Merlin Moncure wrote:
>> We just upgraded from postgres 11 to 12.6 and our server is running
>> out of memory and rebooting about 1-2 times a day.

> I haven't tried your test, but this sounds a lot like the issue I reported with
> JIT, which is enabled by default in v12.

FWIW, I just finished failing to reproduce any problem with that
test case ... but I was using a non-JIT-enabled build.

regards, tom lane

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