From: | Andres Freund <andres(at)anarazel(dot)de> |
---|---|
To: | John R Pierce <pierce(at)hogranch(dot)com> |
Cc: | pgsql-general(at)lists(dot)postgresql(dot)org |
Subject: | Re: Does Postgresql 10 query partitions in parallel? |
Date: | 2017-12-06 19:33:07 |
Message-ID: | 20171206193307.p6mho7faz4oudplm@alap3.anarazel.de |
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Lists: | pgsql-general |
On 2017-12-06 10:53:22 -0800, John R Pierce wrote:
> On 12/6/2017 5:11 AM, Maltsev Eduard wrote:
> > I'm curious if the new feature of Postgresql allows to take advantage of
> > multiple cpus on server, and multiple servers (fdw), for larger read
> > only queries (Data mining). In general there should be some worker that
> > queries partitions and merges the results, and I expect it to be done in
> > parallel. This becomes critical when foreign tables are used, I suppose.
>
>
> PostgreSQL 10 does indeed have a parallel query feature that will use
> multiple cores. you have to explicity invoke it.
"you have to explicitly invoke it" - huh?
> As this is a first
> implementation, its fairly limited as to the sorts of queries that can be
> parallized, but this will be enhanced in future versions.
It's already been expanded a lot since 9.6.
Greetings,
Andres Freund
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