Sv: JIT in PostgreSQL 12 ?

From: Andreas Joseph Krogh <andreas(at)visena(dot)com>
To: Tobias Gierke <tobias(dot)gierke(at)code-sourcery(dot)de>
Cc: PostgreSQL mailing lists <pgsql-performance(at)postgresql(dot)org>
Subject: Sv: JIT in PostgreSQL 12 ?
Date: 2019-05-29 08:48:19
Message-ID: VisenaEmail.21.c9f137cb2e7b98d4.16b02c4aacc@tc7-visena
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På onsdag 29. mai 2019 kl. 10:02:50, skrev Tobias Gierke <
tobias(dot)gierke(at)code-sourcery(dot)de <mailto:tobias(dot)gierke(at)code-sourcery(dot)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(at)visena(dot)com
<mailto:andreas(at)visena(dot)com> www.visena.com <https://www.visena.com>
<https://www.visena.com>

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