Stefan Kaltenbrunner <[EMAIL PROTECTED]> writes: > Tom Lane wrote: >> It'd be interesting to compare 8.1 and HEAD for the no-overhead case; >> I don't think you need to redo all four cases, but I'd like to see that one.
> 8.1: 50,50,49 > HEAD: 49,48,49 OK, so that seems comparable to my results on a dual Xeon ... probably, both your machine and my newer one have fast-to-read clock hardware. We need to get some numbers from one of the people who have complained about EXPLAIN ANALYZE overhead. I'll have to try the stats-collection-active case on my machines, too. I was still planning to look into removing the buffer process to reduce context-swap overhead for stats collection ... regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster