Re: autovacuum maintenance_work_mem

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: autovacuum maintenance_work_mem
Date: 2010-11-16 20:34:23
Message-ID: 4CE2EACF.10703@agliodbs.com
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>> Relevant to this is the question: *when* does vacuum do its memory
>> allocation? Is memory allocation reasonably front-loaded, or does
>> vacuum keep grabbing more RAM until it's done?
>
> All at start.

That means that "allocation by halves" would work fine.

--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com

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