On Fri, 2007-03-09 at 20:37 +0000, Simon Riggs wrote:
> > I wonder if calling RelationGetNumberOfBlocks on every seq scan becomes
> > a performance issue for tiny tables with for example just 1 page. It
> > performs an lseek, which isn't free.
>
> Jeff's patch does this also, for similar reasons.
>
As Tom pointed out, the value is already in memory by the time it gets
to my code. My code just reads that value from memory.
Regards,
Jeff Davis