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shared_buffers

From: "George Sexton" <georges(at)mhsoftware(dot)com>
To: <pgsql-performance(at)postgresql(dot)org>
Subject: shared_buffers
Date: 2010-02-22 15:04:59
Message-ID: 05ee01cab3d0$67abeb10$3703c130$@com (view raw or flat)
Thread:
Lists: pgsql-performance
I'm reading the docs for 8.4.2, section 18.4.1 Memory. I'm trying to figure
out what reasonable values for my usage would be.

The doc says:

shared_buffers (integer)

    Sets the amount of memory the database server uses for shared memory
buffers.

While circular definitions are always right, I'm kind of looking for some
information like:

"PostgreSQL uses shared memory buffers for ...."

Could someone please explain what the role of shared buffers is?

George Sexton
MH Software, Inc. - Home of Connect Daily Web Calendar
http://www.mhsoftware.com/
Voice: 303 438 9585
  




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