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* JIT in PostgreSQL 12 ?
@ 2019-05-29 08:02 Tobias Gierke <tobias.gierke@code-sourcery.de>
2019-05-29 09:37 ` Re: JIT in PostgreSQL 12 ? Andreas Karlsson <andreas@proxel.se>
0 siblings, 1 reply; 2+ messages in thread
From: Tobias Gierke @ 2019-05-29 08:02 UTC (permalink / raw)
To: pgsql-performance
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 ?
Cheers,
Tobias
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: JIT in PostgreSQL 12 ?
2019-05-29 08:02 JIT in PostgreSQL 12 ? Tobias Gierke <tobias.gierke@code-sourcery.de>
@ 2019-05-29 09:37 ` Andreas Karlsson <andreas@proxel.se>
0 siblings, 0 replies; 2+ messages in thread
From: Andreas Karlsson @ 2019-05-29 09:37 UTC (permalink / raw)
To: Tobias Gierke <tobias.gierke@code-sourcery.de>; pgsql-performance
On 5/29/19 10:02 AM, Tobias Gierke wrote:
> 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 ?
No, the compilation still happens once for each worker. PostgreSQL 12
includes some smaller performance improvements for the JIT but nothing
big like that.
Andreas
^ permalink raw reply [nested|flat] 2+ messages in thread
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2019-05-29 08:02 JIT in PostgreSQL 12 ? Tobias Gierke <tobias.gierke@code-sourcery.de>
2019-05-29 09:37 ` Andreas Karlsson <andreas@proxel.se>
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