From: Arnaud Lesauvage <thewild@freesurf.fr>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Ragnar <gnari@hive.is>
Cc: Jens Schipkowski <jens.schipkowski@apus.co.at>
Cc: pgsql-performance@postgresql.org
Subject: Re: Slow update with simple query
Date: Thu, 14 Dec 2006 16:23:00 +0100
Message-ID: <45816C54.5010602@freesurf.fr> (raw)
In-Reply-To: <20426.1166109494@sss.pgh.pa.us>
References: <457FDB1E.6040801@freesurf.fr>
<op.tkhy4jpg81rjf6@xjens.apus.local>
<457FF0CD.4050606@freesurf.fr>
<op.tkh10qgw81rjf6@xjens.apus.local>
<4580025D.2040903@freesurf.fr>
<1166021340.6369.103.camel@localhost.localdomain>
<45801A1B.6070200@freesurf.fr>
<8399.1166028385@sss.pgh.pa.us>
<4581593E.8080401@freesurf.fr>
<20426.1166109494@sss.pgh.pa.us>
Tom Lane a écrit :
> Arnaud Lesauvage <thewild@freesurf.fr> writes:
>> I must be missing something, so here is the full table description.
>
> It looks pretty harmless, except for
>
>> CREATE TRIGGER parse_log_trigger
>> BEFORE INSERT
>> ON statistiques.log
>> FOR EACH ROW
>> EXECUTE PROCEDURE statistiques.parse_log_trigger();
>
> It seems the time must be going into this trigger function. What
> does it do?
A lot of things ! Indeed, if it runs it will very badly hurt performances (table
lookups, string manipulation, etc...) !
But it should only be tringered on INSERTs, and I am doing an UPDATE !
I can post the function's body if you want.
Regards
--
Arnaud
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To: pgsql-performance@postgresql.org
Cc: thewild@freesurf.fr, tgl@sss.pgh.pa.us, gnari@hive.is, jens.schipkowski@apus.co.at
Subject: Re: Slow update with simple query
In-Reply-To: <45816C54.5010602@freesurf.fr>
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