BUG #14889: explain analyze is taking much more time than actual execution

From: mahmoud(dot)alorfaly(at)gmail(dot)com
To: pgsql-bugs(at)postgresql(dot)org
Cc: mahmoud(dot)alorfaly(at)gmail(dot)com
Subject: BUG #14889: explain analyze is taking much more time than actual execution
Date: 2017-11-06 06:50:21
Message-ID: 20171106065021.1492.80384@wrigleys.postgresql.org
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The following bug has been logged on the website:

Bug reference: 14889
Logged by: mahmoud alorfaly
Email address: mahmoud(dot)alorfaly(at)gmail(dot)com
PostgreSQL version: 10.0
Operating system: RHel 7
Description:

I am testing a simple query performance for an items table of one column and
has 4M entries.

Running a simple count(*) is finishing in 250ms While Explain Analyze is
reaching 4 seconds to complete !

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