On 02/07/2013 11:05 AM, Tom Lane wrote:
=?utf-8?q?Milos_Gajdos?= <gy2...@centrum.cz> writes:
What this shows is that xact_commit increases by 3 after just one row insert.
tup_inserted does seem to report correct value. After simple SELECT,
xact_commit increases by 2 - kind of strange as SELECT shouldn't really be
increasing xact_commit ?
Yes, a SELECT does count as an xact_commit...
Additionally (correct me if I'm wrong, Tom), background activity like
autovacuum will generate countable transactions. I can see transactions
increment by a dozen or more on a completely "idle" database if I just
wait a minute or two but the number of those transactions, while visible
on an idle system, is lost in the noise on a busy database.
Other things that generate transactions include connecting to the
database (one, it appears) but \d in psql appears to generate a minimum
of four.
Cheers,
Steve
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