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From: Ghiurea, Isabella <Isabella.Ghiurea@nrc-cnrc.gc.ca>
To: pgsql-admin@postgresql.org <pgsql-admin@postgresql.org>
Subject: effective_cache_size cfg
Date: Mon, 15 Oct 2018 18:04:03 +0000
Message-ID: <1539626643680.56712@nrc-cnrc.gc.ca> (raw)

Hello List,

I am running PGSQL 10.4  on Cent OS  Pg instance has ' effective_cache_size' parameter not  enabled I would like to learn what will  the optimizer behavior be in this case ?

 ( default is set to 4GB , I was  thinking  PG 's optimizer will try to use all available OS RAM when trying to estimate a query, is this the case)


thank you

Isabella

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