From: Tom Lane <tgl@sss.pgh.pa.us>
To: Artur Zając <azajac@ang.com.pl>
Cc: pgsql-performance@postgresql.org
Subject: Re: Difference between explain analyze and real execution time
Date: Mon, 15 Nov 2010 10:12:59 -0500
Message-ID: <13814.1289833979@sss.pgh.pa.us> (raw)
In-Reply-To: <000001cb849e$1dce2720$596a7560$@ang.com.pl>
References: <000001cb849e$1dce2720$596a7560$@ang.com.pl>
=?iso-8859-2?Q?Artur_Zaj=B1c?= <azajac@ang.com.pl> writes:
> Why there is so big difference between explain analyze (0.710 ms) and real
> execution time (3309 ms)?
EXPLAIN ANALYZE doesn't account for all of the runtime involved. In
this case, I'd bet that session startup/shutdown is a big part of the
difference.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, azajac@ang.com.pl
Subject: Re: Difference between explain analyze and real execution time
In-Reply-To: <13814.1289833979@sss.pgh.pa.us>
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