A detailed description with charts of different configuration settings can be found here:
http://developer.postgresql.org/~wieck/vacuum_cost/
There is a problem left that seems to be related to Toms observations in the shutdown behaviour of the postmaster. My current guess is that the napping done via select(2) somehow prevents responding to the query abort signal.
Jan
-- #======================================================================# # It's easier to get forgiveness for being wrong than for being right. # # Let's break this rule - forgive me. # #================================================== [EMAIL PROTECTED] #
vacuum_cost.75devel.diff.gz
Description: GNU Zip compressed data
---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings