On Mon, 2004-06-07 at 15:45, Dan Langille wrote:
> A production system has had a query recently degrade in performance.  
> What once took < 1s now takes over 1s.  I have tracked down the 
> problem to a working example.

What changes have you made to postgresql.conf?

Could you send explain analyse again with SEQ_SCAN enabled but with
nested loops disabled?

Off the cuff? I might hazard a guess that effective_cache is too low or
random_page_cost is a touch too high. Probably the former.
Rod Taylor <rbt [at] rbt [dot] ca>

Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL
PGP Key: http://www.rbt.ca/signature.asc

---------------------------(end of broadcast)---------------------------
TIP 8: explain analyze is your friend

Reply via email to