On Mon, 2007-01-22 at 13:27 -0500, Bruce Momjian wrote: > Yep, agreed on the random I/O issue. The larger question is if you have > a huge table, do you care to reclaim 3% of the table size, rather than > just vacuum it when it gets to 10% dirty? I realize the vacuum is going > to take a lot of time, but vacuuming to relaim 3% three times seems like > it is going to be more expensive than just vacuuming the 10% once. And > vacuuming to reclaim 1% ten times seems even more expensive. The > partial vacuum idea is starting to look like a loser to me again. Hold that thought! Read Heikki's Piggyback VACUUM idea on new thread... -- Simon Riggs EnterpriseDB http://www.enterprisedb.com
