Re: BUG #8470: 9.3 locking/subtransaction performance regression

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: os(at)ohmu(dot)fi
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #8470: 9.3 locking/subtransaction performance regression
Date: 2013-10-04 22:31:41
Message-ID: 20131004223141.GZ5235@eldon.alvh.no-ip.org
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AFAICS the problem here is that this test doesn't use MultiXactIds at
all in 9.2, but it does in 9.3. I vaguely recall Noah tried to convince
me to put in an optimization which would have avoided this issue; I will
give that a thought. I don't think I will be able to get it done for
9.3.1 though.

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

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