Jim C. Nasby wrote:
On Tue, Apr 18, 2006 at 06:22:26PM -0400, Tom Lane wrote:
"Jim C. Nasby" <jnasby@xxxxxxxxxxxxx> writes:
Actually, if you run with stats_block_level turned on you have a
first-order approximation of what is and isn't cached.
Only if those stats decayed (pretty fast) with time; which they don't.
Good point. :/ I'm guessing there's no easy way to see how many blocks
for a given relation are in shared memory, either...
contrib/pg_buffercache will tell you this - what buffers from what
relation are in shared_buffers (if you want to interrogate the os file
buffer cache, that's a different story - tho I've been toying with doing
a utility for Freebsd that would do this).
Cheers
Mark
