From: Kevin Grittner <Kevin.Grittner@wicourts.gov>
To: c k <shreeseva.learning@gmail.com>
To: pgsql-admin@postgresql.org
Subject: Re: Multi-processors
Date: Fri, 19 Sep 2008 08:52:18 -0500
Message-ID: <48D36842.EE98.0025.0@wicourts.gov> (raw)
In-Reply-To: <d8e7a1e30809190455p15b9b83fw4ed297ca2d4d102c@mail.gmail.com>
References: <d8e7a1e30809190455p15b9b83fw4ed297ca2d4d102c@mail.gmail.com>
>>> "c k" <shreeseva.learning@gmail.com> wrote:
> Does PG uses multiple processors/cores if available by default on
various
> OSes?
A separate process is created to handle each connection. You don't
get much benefit from multiple processors if only one connection at a
time is running a query, but in a normal mix it uses all processors.
> What are the limitations on using multiple processors/cores and main
> memory?
I'm not sure what you're getting at here, but PostgreSQL goes through
the file system, so OS caching (which is what usually happens to
otherwise unused system RAM) benefits PostgreSQL. Does that help?
-Kevin
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To: pgsql-admin@postgresql.org
Cc: Kevin.Grittner@wicourts.gov, shreeseva.learning@gmail.com
Subject: Re: Multi-processors
In-Reply-To: <48D36842.EE98.0025.0@wicourts.gov>
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