Re: autovacuum locks

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Gregg Jaskiewicz <gryzman(at)gmail(dot)com>
Cc: Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: autovacuum locks
Date: 2012-03-02 15:28:37
Message-ID: CA+Tgmoa+KXAVAGggeJk0Y=wcOBWe2hV+23QufTiPH4tLHXf4LQ@mail.gmail.com
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On Fri, Mar 2, 2012 at 6:22 AM, Gregg Jaskiewicz <gryzman(at)gmail(dot)com> wrote:
> Looking at the system bit more now, it look like 'waiting' states are
> changing for both the query and autovacuum in pg_stat_activity.
> But very slowly. It looks like they both got into that sort of state
> that keeps them on the edge of starvation.
>
> So this isn't really a deadlock, but rather very poor performance in
> this corner case.

Are you making any use of cursors?

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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