On Thu, Mar 15, 2007 at 10:25:57AM -0400, Alvaro Herrera wrote:
> Magnus Hagander wrote:
> > Hi!
> > 
> > I'd like to add the ability to show global counters of a couple of
> > things currently available in pg_stat_all_tables (for example number of
> > rows added etc) in a global counter for the entire cluster, for
> > monitoring of an entire cluster without having to connect to each
> > individual database. 
> > 
> > Should I try adding this to the exsting pg_stat_database view, or should
> > I look at creating a separate view or two?
> I'd say add that to each database entry.  To get the sum of all
> databases you'd need some sort of refactoring, because currently when a
> backend reads the stats file it only gets its own stats.  One idea is to
> create an additional counter in the stats file, stored separately from
> database entries.
> If you add a tuples updated/deleted/inserted to databases, autovacuum
> can make use of that too (it's even mentioned on an XXX comment in the
> code somewhere).

As you can surely tell, I didn't actually check what code would be
needed before I asked ;-) I'll see what/when I can do.


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