On Mon, 2005-31-10 at 17:16 -0600, PostgreSQL wrote: > We're running 8.1beta3 on one server and are having ridiculous performance > issues. This is a 2 cpu Opteron box and both processors are staying at 98 > or 99% utilization processing not-that-complex queries. Prior to the > upgrade, our I/O wait time was about 60% and cpu utilization rarely got very > high, now I/O wait time is at or near zero.
Have you done anything to verify that this is actually a problem with 8.1, and not some other change that was made as part of the upgrade process? For example, if ANALYZE hasn't been re-run, that could cause the plans chosen by the optimizer to be completely different. -Neil ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
