Add OS/X kernel tuning section.

doc/src/sgml/runtime.sgml

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-$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.147 2002/11/03 01:31:32 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.148 2002/11/05 23:16:56 momjian Exp $
 -->
 
 <Chapter Id="runtime">
@@ -2583,6 +2583,28 @@ kernel.shmmax = 134217728
      </varlistentry>
 
 
+     <varlistentry>
+      <term><systemitem class="osname">OS/X</></term>
+      <indexterm><primary>OS/X</></>
+      <listitem>
+       <para>
+        Edit the file
+        <filename>/System/Library/StartupItems/SystemTuning/SystemTuning
+        </> and edit the following values:
+<programlisting>
+sysctl -w kern.sysv.shmmax
+sysctl -w kern.sysv.shmmin
+sysctl -w kern.sysv.shmmni
+sysctl -w kern.sysv.shmseg
+sysctl -w kern.sysv.shmall
+</programlisting>
+        These values have the same meanings on OS/X as those listed for
+        previous operating systems.
+       </para>
+      </listitem>
+     </varlistentry>
+
+
      <varlistentry>
       <term><systemitem class="osname">SCO OpenServer</></term>
       <indexterm><primary>SCO OpenServer</></>