Dan Harris wrote:
I've found that it would be helpful to be able to tell how busy my
dedicated PG server is ...
I have seen some other nice back-end things exposed through PG functions
( e.g. database size on disk ) and wondered if there was anything
applicable to this.
I'd write a simple pg-perl function to do this. You can access operating-system calls to find out the system's load. But notice that you need "Untrusted Perl" to do this, so you can only do it on a system where you trust every application that connects to your database. Something like this:
create or replace function get_stats()
returns text as '
open(STAT, "</proc/stat");
my @stats = <STAT>;
close STAT;
return join("", @stats);
' language plperlu;
See http://www.postgresql.org/docs/8.1/interactive/plperl-trusted.html
Craig
