From: Andreas Joseph Krogh <andreas@visena.com>
To: Tobias Gierke <tobias.gierke@code-sourcery.de>
Cc: pgsql-performance@lists.postgresql.org
Subject: Re: Sv: JIT in PostgreSQL 12 ?
Date: Wed, 29 May 2019 11:16:06 +0200 (CEST)
Message-ID: <VisenaEmail.26.b2cf86e2c6fa0fb1.16b02df9deb@tc7-visena> (raw)
In-Reply-To: <463322dc-8b64-3595-7f48-3c513d81bd0a@code-sourcery.de>
På onsdag 29. mai 2019 kl. 11:13:10, skrev Tobias Gierke <
tobias.gierke@code-sourcery.de <mailto:tobias.gierke@code-sourcery.de>>: Hi, På
onsdag 29. mai 2019 kl. 10:02:50, skrev Tobias Gierke <
tobias.gierke@code-sourcery.de <mailto:tobias.gierke@code-sourcery.de>>: Hi,
Browsing the PostgreSQL 12 release notes I noticed that JIT is now
enabled by default. Having not followed PostgreSQL development closely -
does this mean that compilation results are now getting cached and
compilation is no longer executed separately for each worker thread in a
parallel query ? I don't know, but just want to chime in with my experience
with PG-12 and JIT: Execution-time is still way worse then JIT=off for your
queries so we'll turn JIT=off until we can mesure performance-gain.
Hm, that's a bummer. So I guess we'll also have to make sure JIT is turned off
when upgrading.
That's what we'll do, unfortunately:-( -- Andreas Joseph Krogh CTO / Partner -
Visena AS Mobile: +47 909 56 963 andreas@visena.com <mailto:andreas@visena.com>
www.visena.com <https://www.visena.com; <https://www.visena.com;
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To: pgsql-performance@postgresql.org
Cc: andreas@visena.com, tobias.gierke@code-sourcery.de, pgsql-performance@lists.postgresql.org
Subject: Re: Sv: JIT in PostgreSQL 12 ?
In-Reply-To: <VisenaEmail.26.b2cf86e2c6fa0fb1.16b02df9deb@tc7-visena>
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