Horton

Re: is JIT available

Pavel Stehule <pavel.stehule@gmail.com>

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From: Pavel Stehule <pavel.stehule@gmail.com>
To: Scott Ribe <scott_ribe@elevated-dev.com>
Cc: PostgreSQL General <pgsql-general@lists.postgresql.org>
Date: 2020-07-25T12:21:14Z
Lists: pgsql-general 
so 25. 7. 2020 v 14:04 odesílatel Scott Ribe <scott_ribe@elevated-dev.com>
napsal:

> > On Jul 24, 2020, at 9:55 PM, Pavel Stehule <pavel.stehule@gmail.com>
> wrote:
> >
> > SELECT * FROM pg_config;
>
> That doesn't tell me whether or not it can actually be used.
>

It shows if Postgres was compiled with JIT support.

When you run EXPLAIN ANALYZE SELECT ... then you can see info about JIT
overhead. If you don't see notices about JIT in EXPLAIN, then JIT was not
used.

Pavel

Commits

  1. Doc: Improve documentation for pg_jit_available()