Jan Wieck <[EMAIL PROTECTED]> writes: > What do you think about my other theory to make C actually 2x effective > cache size and NOT to keep T1 in shared buffers but to assume T1 lives > in the OS buffer cache?
What will you do when initially fetching a page? It's not supposed to go directly into T2 on first use, but we're going to have some difficulty accessing a page that's not in shared buffers. I don't think you can equate the T1/T2 dichotomy to "is in shared buffers or not". You could maybe have a T3 list of "pages that aren't in shared buffers anymore but we think are still in OS buffer cache", but what would be the point? It'd be a sufficiently bad model of reality as to be pretty much useless for stats gathering, I'd think. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend