Re: Postgres scalability and performance on windows

From: Frank Wiles <frank(at)wiles(dot)org>
To: Guido Neitzer <lists(at)event-s(dot)net>
Cc: Gopal <gopal(at)getmapping(dot)com>, <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Postgres scalability and performance on windows
Date: 2006-11-24 17:04:51
Message-ID: 20061124110451.4538d901.frank@wiles.org
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On Fri, 24 Nov 2006 09:22:45 +0100
Guido Neitzer <lists(at)event-s(dot)net> wrote:

> > effective_cache_size = 82728 # typically 8KB each
> Hmm. I don't know what the real effect of this might be as the doc
> states:
>
> "This parameter has no effect on the size of shared memory allocated
> by PostgreSQL, nor does it reserve kernel disk cache; it is used
> only for estimation purposes."

This is a hint to the optimizer about how much of the database may
be in the OS level cache.

---------------------------------
Frank Wiles <frank(at)wiles(dot)org>
http://www.wiles.org
---------------------------------

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