shared_buffers and wal_buffers, not size in bytes. Per discussion.
-<!-- $PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.422 2008/11/20 11:48:26 mha Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.423 2008/12/16 19:30:43 alvherre Exp $ -->
<chapter Id="runtime">
<title>Operating System Environment</title>
<chapter Id="runtime">
<title>Operating System Environment</title>
</tbody>
</tgroup>
</table>
</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>