From: Gourish Singbal <gourish@gmail.com>
To: Chris Hoover <revoohc@gmail.com>
Cc: pgsql-admin@postgresql.org <pgsql-admin@postgresql.org>
Subject: Re: More Autovacuum Questions
Date: Tue, 16 May 2006 23:39:23 +0530
Message-ID: <674d1f8a0605161109v1292daf1j509baf29442faadc@mail.gmail.com> (raw)
In-Reply-To: <1d219a6f0605161100j1a397288y5ed17493542f6f45@mail.gmail.com>
References: <1d219a6f0605161100j1a397288y5ed17493542f6f45@mail.gmail.com>
U can install pgstattuple module which is available in the contrib directory
and run it on production as
psql> \x
psql> select * from pgstattuple('public'.'tablename');
it displays the table_len, tuple_count, tuple_len, tuple_percent,
dead_tuple_count, dead_tuple_len,dead_tuple_percent,free_space,free_percent
for the table .
On 5/16/06, Chris Hoover <revoohc@gmail.com> wrote:
>
> Thanks to those who answered my first question. I am looking at
> implementing autovacuuming on our new production 8.1.3 systems. I am
> reading the documentation on the various configuration parameters. The
> autovacuum_analyze_threshold and autovacuum_vacuum_threshold talk about the
> number of updated and deleted tuples. Is there anyway to calculate these
> numbers in a running database?
>
> The reason I'm asking is that we are having some sporadic slowness issues
> with our databases, and I'm wanting to see how the database looks during
> these times. I know that vacuuming some specific tables tends to fix the
> problem. So, if I can see what autovacuum might see, I could set the
> parameters correctly to try and fix the issue.
>
> Anyway, are these number available to me?
>
> Thanks,
>
>
> Chris
>
--
Best,
Gourish Singbal
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To: pgsql-admin@postgresql.org
Cc: gourish@gmail.com, revoohc@gmail.com
Subject: Re: More Autovacuum Questions
In-Reply-To: <674d1f8a0605161109v1292daf1j509baf29442faadc@mail.gmail.com>
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