Date: Wed, 4 Sep 2013 03:55:51 -0700 (PDT)
From: boraldomaster <boraldomaster@gmail.com>
To: pgsql-admin@postgresql.org
Message-ID: <1378292151856-5769528.post@n5.nabble.com>
In-Reply-To: <20363.1360266498@sss.pgh.pa.us>
References: <20130207191641.149E5128@centrum.cz>
 <17450.1360263900@sss.pgh.pa.us> <5113FF56.5020309@pinpointresearch.com>
 <20363.1360266498@sss.pgh.pa.us>
Subject: Re: Postgres 9.1 statistics in pg_stat_database
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Let me show you my statistics, that confuses me even in terms of this
discussion.
What am I doing.

1. Create a database *highload*.
2. Execute *select xact_commit from pg_stat_database where datname =
'highload'* from neighbouring database (so that xact_commit is counted to
that neighbour) and receive 0.
3. Connect to database from several different clients and get +1 to
xact_commit for each connection.
4. Wait for 1 min (several times) and get +2 each minute - so this is
autovacuum works.
5. Start executing simple select *select * from pg_user* 
Each select gives me +4, +5, +6. In pgadmin - even +19.

So the first question.
1. Why autovacuum gives +2
2. Why select gives +4 an more ?


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