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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alvaro Herrera <alvherre@commandprompt.com>
Cc: Jim C. Nasby <jnasby@pervasive.com>
Cc: Dan Gorman <dgorman@hi5.com>
Cc: mischa@ca.sophos.com
Cc: pgsql-performance@postgresql.org
Subject: Re: Selects query stats?
Date: Tue, 23 May 2006 15:55:50 -0400
Message-ID: <19283.1148414150@sss.pgh.pa.us> (raw)
In-Reply-To: <20060523195001.GH28863@surnet.cl>
References: <9C4E40CF-6C06-4297-AF32-A7EF2A3F3C0F@hi5.com>
	<4473512E.7020805@ca.sophos.com>
	<82252882-2A15-4823-A517-7AB3161889D1@hi5.com>
	<4473553C.1010804@ca.sophos.com>
	<127D68F6-7620-4A62-8D1A-9B475E7571CD@hi5.com>
	<20060523184100.GW64371@pervasive.com>
	<17713.1148411593@sss.pgh.pa.us>
	<20060523195001.GH28863@surnet.cl>

Alvaro Herrera <alvherre@commandprompt.com> writes:
> OTOH ISTM it would be easy to modify Postgres so as to count statements
> in the stat collector, by turning pgstat_report_activity into a routine
> that sent a count (presumably always 1) instead of the query string, and
> then just add the count to a counter on receiving.

You wouldn't have to change the backends at all, just modify the
collector to count the number of report_activity messages received.
Might have to play some games with ignoring "<IDLE>" messages, but
otherwise simple (and simplistic...)

			regards, tom lane

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