On Thu, 2007-11-22 at 19:02 +0000, Heikki Linnakangas wrote:
> Even if we could use PageIsPrunable, it would be a bad thing from a
> robustness point of view. If we ever failed to set the Prunable-flag on
> a page for some reason, VACUUM would never remove the dead tuples.
That's a killer reason, I suppose. I was really trying to uncover what
the thinking was, so we can document it. Having VACUUM ignore it
completely seems wrong.
> Besides, I don't remember anyone complaining about VACUUM's CPU usage,
> so it doesn't really matter.
Recall anybody saying how much they love it? ;-)
-- Simon Riggs 2ndQuadrant http://www.2ndQuadrant.com