On Tue, Nov 27, 2007 at 05:32:49PM +0000, Simon Riggs wrote: > What I would really like to persuade everybody is that performance needs > specific attention.
[. . .] > Your thoughts are welcome, Well, one thing that might help is something of the specifics you mention. I remember mentioning to Jan not long after he started at Afilias that we occasionally saw strange behaviour that looked like "lock up". He was slightly incredulous, and I didn't have time to build a repeatable test case. So it was in the context of testing Slony that he discovered the dual pains of buffer shuffling and checkpoint storms; this is part of what led him to work on those problems in 8.0. The key was to state, at the outset, "Here is the problem I want to fix." By stating precisely and specifically what is to be fixed, the issue moves from "performance needs" to a feature that can be implemented. Perhaps now is the time to list some specific performance areas you want to fix up? A -- Andrew Sullivan Old sigs will return after re-constitution of blue smoke ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq