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Re: Selects query stats?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Cc: "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>, Dan Gorman <dgorman(at)hi5(dot)com>, mischa(at)ca(dot)sophos(dot)com, pgsql-performance(at)postgresql(dot)org
Subject: Re: Selects query stats?
Date: 2006-05-23 19:55:50
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
Alvaro Herrera <alvherre(at)commandprompt(dot)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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