From: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: Tue, 16 Dec 2008 19:30:43 +0000 (+0000)
Subject: Add note to the shared memory sizing table about needing to use page count in
X-Git-Tag: recoveryinfrav9~194
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=ab804648d1d95b0a0bb5e638974a1a749c0d12f1;p=users%2Fsimon%2Fpostgres.git

Add note to the shared memory sizing table about needing to use page count in
shared_buffers and wal_buffers, not size in bytes.  Per discussion.
---

diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index d2bd9af274..f07f69343f 100644
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -1124,6 +1124,16 @@ set semsys:seminfo_semmsl=32
      </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>