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* MAX_CONNECTIONS ??
@ 2008-11-12 16:05 paulo matadr <saddoness@yahoo.com.br>
0 siblings, 1 reply; 2+ messages in thread
From: paulo matadr @ 2008-11-12 16:05 UTC (permalink / raw)
To: GENERAL <pgsql-general@postgresql.org>; pgsql-admin
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
# - 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
Thanks for help
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^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: [GENERAL] MAX_CONNECTIONS ??
@ 2008-11-12 17:41 Richard Huxton <dev@archonet.com>
parent: paulo matadr <saddoness@yahoo.com.br>
0 siblings, 0 replies; 2+ messages in thread
From: Richard Huxton @ 2008-11-12 17:41 UTC (permalink / raw)
To: paulo matadr <saddoness@yahoo.com.br>; +Cc: GENERAL <pgsql-general@postgresql.org>; pgsql-admin
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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