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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: Andrew Gierth <andrew@tao11.riddles.org.uk>
Cc: Amit Kapila <akapila@postgresql.org>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Cc: John Naylor <john.naylor@2ndquadrant.com>
Cc: pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Avoid creation of the free space map for small heap relations.
Date: Mon, 28 Jan 2019 01:01:10 -0500
Message-ID: <9646.1548655270@sss.pgh.pa.us> (raw)
In-Reply-To: <CAA4eK1K92KMJ_LTTn58ycfYtKFzN8xQv5iF0oTiBMX4eBPwvoA@mail.gmail.com>
References: <E1gnwx4-0003C9-BR@gemulon.postgresql.org>
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	<8872.1548654531@sss.pgh.pa.us>
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Amit Kapila <amit.kapila16@gmail.com> writes:
>> I don't know what the common thread is here, but you don't get to leave
>> the buildfarm broken this badly while you figure it out.

> Sure, but I am wondering why none of this ever shown in local tests,
> as we have done quite some testing related to pgbench as well.

Not sure, but I notice that two of the three critters I just pointed to
use force_parallel_mode.  Dromedary does not, but it's old and slow.
Kind of smells like a timing problem ...

			regards, tom lane




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