On Mon, 2004-12-13 at 17:43 -0500, Jimmie H. Apsey wrote: > Hello all, > I have just loaded Postgresql 7.3.6-7 onto a new server on the > recommendation of Tom Lane. It is part of Red Hat AS 3. > I have Postgresql 7.1.3-5 running on Red Hat AS 2.1. > I have a simple view from which I select on both systems. The 7.3.6-7 > version requires 18+ seconds to do a select from a particular view. > The 7.1.3-5 version requires 3+ seconds to select from the same view.
Have you run ANALYZE recently? If so, take a look at the query plans produced by 7.1 and 7.3 (Using EXPLAIN and EXPLAIN ANALYZE). Likely the planner is making an incorrect decision -- EXPLAIN should help you figure out why. You can also post the EXPLAIN / EXPLAIN ANALYZE output to the list and someone can give you some advice. For more info: http://www.postgresql.org/docs/7.4/static/performance-tips.html#USING-EXPLAIN -Neil ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
