From: Simon Riggs <simon@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: 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 22:47:16 +0100
Message-ID: <1148420837.2755.196.camel@localhost.localdomain> (raw)
In-Reply-To: <19283.1148414150@sss.pgh.pa.us>
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>
<19283.1148414150@sss.pgh.pa.us>
On Tue, 2006-05-23 at 15:55 -0400, Tom Lane wrote:
> 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...)
The OP wanted statements/sec rather than just a total.
Having stats logged by time would be very useful, but I wouldn't limit
that just to numbers of statements in each time period.
stats_logging_interval = 60 by default, 0 to disable, range 5-3600
--
Simon Riggs
EnterpriseDB http://www.enterprisedb.com
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To: pgsql-performance@postgresql.org
Cc: simon@2ndquadrant.com, tgl@sss.pgh.pa.us, alvherre@commandprompt.com, jnasby@pervasive.com, dgorman@hi5.com, mischa@ca.sophos.com
Subject: Re: Selects query stats?
In-Reply-To: <1148420837.2755.196.camel@localhost.localdomain>
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