Date: Wed, 24 Jan 2018 17:18:26 -0300
From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: Andres Freund <andres@anarazel.de>
Cc: Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>,
	Thomas Munro <thomas.munro@enterprisedb.com>,
	"pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Subject: Re: pgsql: Add parallel-aware hash joins.
Message-ID: <20180124201826.g6vhuewpnycpt3ta@alvherre.pgsql>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <20180124182018.jx2h4wp6twqo7xix@alap3.anarazel.de>
User-Agent: NeoMutt/20170306-137-4415bd-dirty (1.8.0)
Precedence: bulk

Andres Freund wrote:

> Besides larger groups, starting the next test(s) earlier, another way to
> gain pretty large improvements would be a test schedule feature that
> allowed to stat dependencies between tests. So instead of manually
> grouping the schedule, have 'numerology' state that it depends on int2,
> int4, int8, float4, float8, which means it can actually be started
> earlier than it currently can in many cases.

Yeah, I proposed this a decade ago but never had the wits to write the
code.

It would be very useful for running tests standalone, too -- much as I
dislike 'make installcheck' taking half a minute, I dislike much more
having to take 5 minutes each time to figure out that create_table
depends on box, polygon, create_function, yadda yadda.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services