From: | "Claus Guttesen" <kometen(at)gmail(dot)com> |
---|---|
To: | "Jonas Pacheco" <jonas(at)migrate(dot)com(dot)br> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: You may need to increase mas_loks_per_trasaction |
Date: | 2008-09-05 12:37:53 |
Message-ID: | b41c75520809050537q14bbe7f8n4df8066a3e6f7099@mail.gmail.com |
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Thread: | |
Lists: | pgsql-performance |
> Considering a quad core server processor, 4 GBs of RAM memory, disk Sata
> 2.
>
> What is the recommended setting for the parameters:
>
> max_connections:70
Depends on how many clients that access the database.
> shared_buffers?
I have mine at 512 MB but I will lower it and see how it affects
performance. I have 16 GB in my server.
> max_fsm_relations?
> max_fsm_pages?
Perform a vacuum analyze verbose and look at the last few lines. This
will tell you whether you need to increase max_fsm_*.
Consider lowering random_page_cost so it favoes indexex more often
than seq. scans.
But if you don't get a decent raid-controller your data will move slow
and tuning will only make a minor difference.
--
regards
Claus
When lenity and cruelty play for a kingdom,
the gentler gamester is the soonest winner.
Shakespeare
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