On Wed, 2006-06-07 at 15:32 -0400, Tom Lane wrote: > Ah-hah, I've sussed it.
> so I'm > afraid this approach to sampling EXPLAIN ANALYZE is a failure. Hmmm, I thought we already got that bit...sorry to sound negative. > I propose we revert this patch and think about an interrupt-driven > sampling method instead. I don't have much more faith in crazy scheme No.2 either. (Mine or yours...) Can we just have an option to avoid the timing altogether, please? I don't want to have long discussions about instrumentation, I just want a reasonably useful EXPLAIN ANALYZE in a reasonable amount of time - one that we never, ever have to doubt whether the sampling works correctly on a Miasmic-367 with HyperKooling. You could lose a month on -perform going into the details of this for everybody - this was supposed to be a simple additional feature. If you're set on the sampling, great, but can we have the option to avoid it completely also? -- Simon Riggs EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
