On Wednesday February 11 2004 9:57, Tom Lane wrote:
> "Ed L." <pgsql@bluepolka.net> writes:
> > Then what scenarios, if any, merit theory (2) over theory (1)?
>
> I'd only consider a large-cache setting on a machine that's dedicated to
> running the database (where "dedicated" means "that's the only thing you
> care about performance of", as in your first scenario). Even then I'd
> test it against the other way. As Andrew Sullivan notes nearby, our
> experience has been that the PostgreSQL buffer manager isn't all that
> efficient about managing large caches. It's possible that Jan's current
> work will change that situation in 7.5, but I'd still test first ...
Great. Thx to all for feedback, very informative, interesting, and helpful
in practice.
Ed