Re: pgbench -f and vacuum

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Tatsuo Ishii <ishii(at)postgresql(dot)org>
Cc: tv(at)fuzzy(dot)cz, pgsql-hackers(at)postgresql(dot)org
Subject: Re: pgbench -f and vacuum
Date: 2014-12-22 23:55:17
Message-ID: 20141222235517.GI1768@alvh.no-ip.org
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Here's a completely different idea. How about we add an option that
means "vacuum this table before running the test" (can be given several
times); by default the set of vacuumed tables is the current pgbench_*
list, but if -f is specified then the default set is cleared. So if you
have a -f script and want to vacuum the default tables, you're forced to
give a few --vacuum-table=foo options. But this gives the option to
vacuum some other table before the test, not just the pgbench default
ones.

This is a bit more complicated, and makes life more difficult to people
using -f and the default pgbench tables than your proposed new -k
switch. But it's more general and it might have more use cases; and
people using -f with the default pgbench tables are probably rare,
anyway.

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

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