_page_cost parameter with values < 1

From: Thomas Kellerer <spam_eater(at)gmx(dot)net>
To: pgsql-general(at)postgresql(dot)org
Subject: _page_cost parameter with values < 1
Date: 2017-07-20 11:54:02
Message-ID: okq5kk$7bt$1@blaine.gmane.org
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Hello,

recently I have seen a Postgres configuration with the following values:

seq_page_cost = 0.5
random_page_cost = 0.6

Is there any advantage (or maybe disadvantage) compared to using e.g. 1.0 and 1.2?

Regards
Thomas

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