From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Jeff Davis <pgsql@j-davis.com>
Cc: David Rowley <dgrowleyml@gmail.com>
Cc: Stephen Frost <sfrost@snowman.net>
Cc: Peter Geoghegan <pg@bowt.ie>
Cc: Andres Freund <andres@anarazel.de>
Cc: Bruce Momjian <bruce@momjian.us>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Justin Pryzby <pryzby@telsasoft.com>
Cc: Melanie Plageman <melanieplageman@gmail.com>
Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: pgsql-hackers@postgresql.org <pgsql-hackers@postgresql.org>
Subject: Re: Default setting for enable_hashagg_disk
Date: Mon, 13 Jul 2020 14:38:23 -0400
Message-ID: <2687501.1594665503@sss.pgh.pa.us> (raw)
In-Reply-To: <20200713164736.GA25726@alvherre.pgsql>
References: <20200713164736.GA25726@alvherre.pgsql>
Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> I'm in favor of hash_mem_multiplier. I think a >1 default is more
> sensible than =1 in the long run, but if strategic vote is what we're
> doing, then I support the =1 option.
FWIW, I also think that we'll eventually end up with >1 default.
But the evidence to support that isn't really there yet, so
I'm good with 1.0 default to start with.
regards, tom lane
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To: pgsql-hackers@postgresql.org
Cc: tgl@sss.pgh.pa.us, alvherre@2ndquadrant.com, pgsql@j-davis.com, dgrowleyml@gmail.com, sfrost@snowman.net, pg@bowt.ie, andres@anarazel.de, bruce@momjian.us, robertmhaas@gmail.com, pryzby@telsasoft.com, melanieplageman@gmail.com, tomas.vondra@2ndquadrant.com
Subject: Re: Default setting for enable_hashagg_disk
In-Reply-To: <2687501.1594665503@sss.pgh.pa.us>
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