From: luchot <luchot@voila.fr>
To: pgsql-performance@postgresql.org
Subject: Maintenance_work_mem influence on queries
Date: Thu, 6 Apr 2006 10:57:41 +0200 (CEST)
Message-ID: <14743652.1144313861246.JavaMail.www@wwinf4101> (raw)
Hello,
I am doing some test with differents values for the parameter maintenance_work_mem in order to
ameliorate the time for the creation of index and and the use of vacuum and analyse.
I read in the doc that this parameter is just for create index, vacuum and analyse and foreign key .
But when i test 2 queries with differents values the result are twice big :
for mwm to 64 Mo the query 1 last 34 min and the query 2 41 min
for mwm to 512 mo the query 1 last 17 min and the query 2 21 min
So my question is in what condition the parameter maintenance_work_mem influence on the execution of queries.
Thanks ,
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To: pgsql-performance@postgresql.org
Cc: luchot@voila.fr
Subject: Re: Maintenance_work_mem influence on queries
In-Reply-To: <14743652.1144313861246.JavaMail.www@wwinf4101>
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