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>