Tom, > Yes, autovacuum is off, and bgwriter shouldn't have anything useful to > do either, so I'm a bit at a loss what's going on --- but in any case, > it doesn't look like we are cycling through the entire buffer space > for each fetch.
I'd be happy to DTrace it, but I'm a little lost as to where to look in the kernel. I'll see if I can find someone who knows more about memory management than me (that ought to be easy). -- Josh Berkus PostgreSQL @ Sun San Francisco ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq