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help / color / mirror / Atom feedFrom: Alvaro Herrera <[email protected]>
To: Bruce Momjian <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: dx k9 <[email protected]>
Subject: Re: [ADMIN] shared_buffers and shmmax
Date: Tue, 16 Dec 2008 11:43:27 -0300
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
<[email protected]>
Bruce Momjian wrote:
> OK, I never got the change applied because of Alvaro's objection so
> there is nothing to revert. Alvaro said he has an idea for improved
> wording; I do not.
I think we should add a more explicit note, like in the attached patch.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
Attachments:
[text/x-diff] note-buffersize.patch (846B, 2-note-buffersize.patch)
download | inline diff:
Index: runtime.sgml
===================================================================
RCS file: /home/alvherre/Code/cvs/pgsql/doc/src/sgml/runtime.sgml,v
retrieving revision 1.422
diff -c -p -r1.422 runtime.sgml
*** runtime.sgml 20 Nov 2008 11:48:26 -0000 1.422
--- runtime.sgml 16 Dec 2008 14:40:42 -0000
*************** set semsys:seminfo_semmsl=32
*** 1124,1129 ****
--- 1124,1139 ----
</tbody>
</tgroup>
</table>
+
+ <note>
+ <para>
+ The multipliers for <varname>shared_buffers</> and
+ <varname>wal_buffers</> should be the number of buffers, not the
+ amount in bytes. To find out the number of shared or wal buffers, divide
+ the amount in bytes by <xref linkend="guc-block-size"> and
+ <xref linkend="guc-wal-block-size">, respectively.
+ </para>
+ </note>
</sect2>
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