Re: Partitioning Vs. Split Databases - performance?

On Thu, 21 Dec 2006, Vlad wrote:

> On 12/21/06, Ron Johnson <ron(dot)l(dot)johnson(at)cox(dot)net> wrote:
>>
>>
>> >> Given the same physical hardware, which one is likely to perform
>> better? Does
>> >> it make any difference? Does using separate databases use more RAM than
>> a
>> >> single database with a bunch of different tables?
>>
>> Config files are global, so I doubt it.
>>
>
> if it's a web app with persistent connections, then splitting onto several
> databases may consume more RAM. Example: 100 apache clients connected to 3
> databases creates 300 forked postmaster processes ; vs 100 apache clients
> connected to the same DB using three schemas only takes 100 postmasters
>
> -- Vlad

Using something like pgpool between the web servers and the DB should help
with that scaling problem...

- Marc