De: Richard Huxton <dev@archonet.com>
Para: paulo matadr <saddoness@yahoo.com.br>
Cc: GENERAL <pgsql-general@postgresql.org>; admin <pgsql-admin@postgresql.org>
Enviadas: Quarta-feira, 12 de Novembro de 2008 14:41:06
Assunto: Re: [ADMIN] [GENERAL] MAX_CONNECTIONS ??
paulo matadr wrote:
> I need help to alter max_connections em my database, this parameter
> stay in defalt MAX_CONNECTIONS=100
> I want to change for MAX_CONNECTIONS=300. about parameters below,
> need to change anything?
>
> 1 -sysctl.conf
>
> kernel.shmmax = 68719476736
> kernel.shmall = 4294967296
Does your shmmax have one digit too many? 68GB?
> # - Memory -
>
> 2-Postgresql.conf
> shared_buffers = 2048MB
> temp_buffers = 12MB
> work_mem = 12MB
> maintenance_work_mem = 128MB
> max_fsm_pages = 4000000
> max_fsm_relations = 5000
Should be OK, depending on your work-load.
One question - what do you plan on doing with 300 active connections?
Unless you've got more than 100 processors in this machine you might
want to consider connection-pooling.
--
Richard Huxton
Archonet Ltd
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