pg.ddx.io pgsql-hackers@postgresql.org mailing list archive help / color / mirror / Atom feed From: Josh berkus <josh@agliodbs.com>
To: Robert Haas <robertmhaas@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Amit Kapila <amit.kapila16@gmail.com>
Cc: Peter Geoghegan <pg@heroku.com>
Cc: Noah Misch <noah@leadboat.com>
Cc: David Rowley <david.rowley@2ndquadrant.com>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Magnus Hagander <magnus@hagander.net>
Cc: Bruce Momjian <bruce@momjian.us>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: Rename max_parallel_degree?
Date: Wed, 1 Jun 2016 14:30:40 -0700
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On 06/01/2016 02:21 PM, Robert Haas wrote:
> If you lined up ten people in a room all of whom were competent
> database professionals and none of whom knew anything about PostgreSQL
> and asked them to guess what a setting called work_mem does and what a
> setting called max_parallel_degree does, I will wager you $5 that
> they'd do better on the second one. Likewise, I bet the guesses for
> max_parallel_degree would be closer to the mark than the guesses for
> maintenance_work_mem or replacement_sort_tuples or commit_siblings or
> bgwriter_lru_multiplier.
Incidentally, the reason I didn't jump into this thread until the
patches showed up is that I don't think it actually matters what the
parameters are named. They're going to require documentation
regardless, parallism just isn't something people grok instinctively.
I care about how the parameters *work*, and whether that's consistent
across our various resource management settings.
--
--
Josh Berkus
Red Hat OSAS
(any opinions are my own)
--
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Cc: josh@agliodbs.com, robertmhaas@gmail.com, tgl@sss.pgh.pa.us, amit.kapila16@gmail.com, pg@heroku.com, noah@leadboat.com, david.rowley@2ndquadrant.com, alvherre@2ndquadrant.com, magnus@hagander.net, bruce@momjian.us
Subject: Re: Rename max_parallel_degree?
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