From: Andreas Joseph Krogh <andreas@visena.com>
To: Tobias Gierke <tobias.gierke@code-sourcery.de>
Cc: PostgreSQL mailing lists <pgsql-performance@postgresql.org>
Subject: Sv: JIT in PostgreSQL 12 ?
Date: Wed, 29 May 2019 10:48:19 +0200 (CEST)
Message-ID: <VisenaEmail.21.c9f137cb2e7b98d4.16b02c4aacc@tc7-visena> (raw)
In-Reply-To: <b1705e1a-90dc-f614-74cb-2e003a457758@code-sourcery.de>
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. -- 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
Subject: Re: Sv: JIT in PostgreSQL 12 ?
In-Reply-To: <VisenaEmail.21.c9f137cb2e7b98d4.16b02c4aacc@tc7-visena>
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