Shridhar Daithankar wrote:
> Dave Weaver wrote:
> > A simple "SELECT count(*) from obs" query takes around that sort of time
> > too.
>
> That is no test. Postgresql will always fetch the entire table.
OK, I wasn't aware of that.
> > I have run "vacuumdb --analyze obs", to little effect.
>
> Check http://www.varlena.com/varlena/GeneralBits/Tidbits/perf.html for
general
> tuning tips
Thanks for the link - I will read and digest.
> and do a vacuum full if table is updated frequently. Also reindex
> the indexes after vacuum. It will take quite some time though.
The version of Postgres that I'm running (7.1.3) doesn't seem to have a
"vacuum full".
I have reindexed after a vacuum, with liitle-to-no effect.
Dave.