Bruce Momjian <pgman@candle.pha.pa.us> writes: > Tom Lane wrote: >> Still to be determined: what we lose in extra I/O from the presumably >> less efficient cache management; also what sort of slowdown occurs on >> a single-CPU machine that isn't going to get any benefit from the >> increased amount of lock management. But it looks promising.
> Yea, that was one of my questions --- the new buffer locking helps SMP, > but how much does it hurt single-cpu machines? So far I've not been able to measure any consistent difference, but you know how much I trust pgbench ;-). I hope that Mark Wong can give us some results on the OSDL setup soon. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings