Re: PostgreSQL 12, JIT defaults

From: Andres Freund <andres(at)anarazel(dot)de>
To: pgsql-hackers(at)lists(dot)postgresql(dot)org,Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>,PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: PostgreSQL 12, JIT defaults
Date: 2018-10-08 14:58:12
Message-ID: 7776286F-9802-44C1-82ED-F9C04BDD5332@anarazel.de
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Hi

On October 8, 2018 2:51:15 AM PDT, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>Hi
>
>I configured PostgreSQL without JIT support, but JIT is active by
>default
>
>postgres=# show jit;
>┌─────┐
>│ jit │
>╞═════╡
>│ on │
>└─────┘
>(1 row)

Where is the jit=on coming from? Config from before it was turned off?

>Unfortunately - this combination does crashes on some bigger queries.

You probably have the JIT plugin installed from an earlier time, which also would explain why it crashes.

Andres

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