From: Michael Monnerie <michael.monnerie@it-management.at>
Organization: it-management http://it-management.at
To: pgsql-admin@postgresql.org
Subject: Re: Tuning
Date: Tue, 8 Apr 2008 10:55:02 +0200
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On Dienstag, 8. April 2008 paul rivers wrote:
> I don't see a direct way to monitor bloat from pg_stat*. =A0 If I'm
> wrong, please set me straight.
>
> For example, monitoring index bloat would involve deciding how many
> pages an index would ideally consume, based on either sampling the
> table yourself or raiding stats, and making assumptions. =A0Then you'd
> compare to actual (or approximated actual) and decide if you were
> within whatever threshold you think is OK.

If there's no rule of thumb, how could you manually decide on actions,=20
other than by reading from a crystal ball?

Also, if there are no tools, almost no admin can/will do anything.=20
Except for the specialist having too much free time to dig into the db=20
just for fun and reading tons of pg_stat* tables and values *g*
As most won't have that funny time, tools which show possible problems=20
or performance losses would greatly help.

On Dienstag, 8. April 2008 Jeff Frost wrote:
> I don't know about rrd graphing it, but there are some great nagios
> plugins for this at http://bucardo.org/nagios
>
> You could have a look at the queries used in those and roll your own
> mrtg plugins.  If you do, please share.

Thank you. I'll have a look at that nagios plugins.

mfg zmi
=2D-=20
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