<snip> We are experiencing exactly the same problem here, and we use 7.4 on Linux/i386 SMP (2 processors). Our databases does even more access: about 30k selects per hour, 10k updates and inserts per hour
Vacuum analyze is done daily. We migrated our database to a new server. Initially, everything was fine, and pretty fast. In a week or so, Vacuum performance is pretty slow. What was done in 15 minutes now takes 2 hours. Postgres is consuming a lot of CPU power and, when the system is in peak period, it's even worse. Sure, we have a large database. 3 tables have more than 10M records, but more or less suddenly, we're having a heavy performance prejudice. > > This almost sounds like a problem (fixed in 7.4 I believe) where some > system catalog indexes would get huge over time, and couldn't be > vacuumed or reindexed while the database was up in multi-user mode. > > I'll defer to Tom or Bruce or somebody to say if my guess is even > close... > > > ---------------------------(end of broadcast)--------------------------- > TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED]) ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
