Tom Lane wrote:
> Artiom Makarov <artiom.makarov@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 <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com