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help / color / mirror / Atom feedFrom: Francisco Reyes <[email protected]>
To: Tom Lane <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Subject: Re: [ADMIN] shared_buffers and shmmax
Date: Tue, 22 Jul 2008 15:30:21 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
<[email protected]>
On 10:45 am 07/22/08 Tom Lane <[email protected]> wrote:
> [ redirecting to pgsql-docs ]
> number-of-buffers. I agree it's not entirely obvious that what it
> means is "multiply your setting in KB/MB by 8400/8192". Anybody have
> an idea how to clarify things?
Perhaps changing the table title?
Table 17-2. Configuration parameters affecting PostgreSQL's shared memory
usage when not using a size modified.
Alternatively, below the table we could have clarifications such as:
Previously, it was not possible to indicate a size modified such as M for
Megabytes. As of version X.Y, Postgresql allows to use M, for MB, GB for GB
and more... See.... for all values.
When not using one of the new modifiers the space used would be the number
you enter times the constant on the right side of the table.
For example using 100 shared_buffers would be 100 x 8400 = 840,000 bytes.
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