Re: The black art of postgresql.conf tweaking

hi,

Paul Serby wrote:

> Can anyone give a good reference site/book for getting the most out of
> your postgres server.
>
> All I can find is contradicting theories on how to work out your settings.
>
> This is what I followed to setup our db server that serves our web
> applications.
>
> http://www.phpbuilder.com/columns/smith20010821.php3?page=2
>
> We have a Dell Poweredge with the following spec.
>
> CPU: Intel(R) Xeon(TM) CPU 3.06GHz (512 KB Cache)
> CPU: Intel(R) Xeon(TM) CPU 3.06GHz (512 KB Cache)
> CPU: Intel(R) Xeon(TM) CPU 3.06GHz (512 KB Cache)
> CPU: Intel(R) Xeon(TM) CPU 3.06GHz (512 KB Cache)
> Physical Memory: 2077264 kB
> Swap Memory: 2048244 kB
>
> Apache on the Web server can take up to 300 connections and PHP is using
>  pg_pconnect
>
> Postgres is set with the following.
>
> max_connections = 300
> shared_buffers = 38400
> sort_mem = 12000
>
> But Apache is still maxing out the non-super user connection limit.
>
> The machine is under no load and I would like to up the max_connections
> but I would like to know more about what you need to consider before
> doing so.

One more: In php.ini, set the pgsql.max_persistent lower then 300

; Maximum number of persistent links.  -1 means no limit.
pgsql.max_persistent = -1 -> change this

C.