From: Tom Lane <tgl@sss.pgh.pa.us>
To: Vincent Dautremont <vincent@searidgetech.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: out of memory error
Date: Tue, 22 May 2012 14:30:03 -0400
Message-ID: <5105.1337711403@sss.pgh.pa.us> (raw)
In-Reply-To: <CAA4Vp48tDW5vRA3t=WqEJzwYfDY1wmZ=YwDgPkaZ8ktMwUsUaQ@mail.gmail.com>
References: <CAA4Vp4_pD3tc8dT8rtdPjO4vQfW+eyuNpYb72HPYYRokdPHS7A@mail.gmail.com>
<3902.1337708023@sss.pgh.pa.us>
<CAA4Vp48tDW5vRA3t=WqEJzwYfDY1wmZ=YwDgPkaZ8ktMwUsUaQ@mail.gmail.com>
Vincent Dautremont <vincent@searidgetech.com> writes:
> I think that i'm using the database for pretty basic stuffs.
> It's mostly used with stored procedures to update/ insert / select a row of
> each table.
> On 3 tables (less than 10 rows each), clients does updates/select at 2Hz to
> have pseudo real-time data up to date.
> I've got a total of 6 clients to the DB, they all access DB using stored
> procedures
> I would say that this is a light usage of the DB.
> Then I have rubyrep 1.2.0 running to sync a backup of the DB.
> it syncs 8 tables : 7 of them doesn't really change often and 1 is one of
> the pseudo real-time data one.
This is not much information. What I suspect is happening is that
you're using plpgsql functions (or some other PL) in such a way that the
system is leaking cached plans for the functions' queries; but there is
far from enough evidence here to prove or disprove that, let alone debug
the problem if that is a correct guess. An entirely blue-sky guess as
to what your code might be doing to trigger such a problem is if you
were constantly replacing the same function's definition via CREATE OR
REPLACE FUNCTION. But that could be totally wrong, too.
Can you put together a self-contained test case that triggers similar
growth in the server process size?
regards, tom lane
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To: pgsql-admin@postgresql.org
Cc: tgl@sss.pgh.pa.us, vincent@searidgetech.com
Subject: Re: out of memory error
In-Reply-To: <5105.1337711403@sss.pgh.pa.us>
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