Tom Lane wrote: > Artiom Makarov <artiom.maka...@gmail.com> writes: > > When temp tables with "on commit delete rows" exists, I can see a > > strange delay at any ?begin? and ?commit?. > > A delay at commit is hardly surprising, because each such temp table > requires filesystem operations at commit (basically an "ftruncate"). > I don't recall any operations at transaction start for such tables, > but there may be some.
I think one of the problems is that we do the truncate even if the table has not be touched by the query, which is poor behavior. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
