Index: doc/src/sgml/config.sgml
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RCS file: /home/alvherre/Code/cvs/pgsql/doc/src/sgml/config.sgml,v
retrieving revision 1.224
diff -c -p -r1.224 config.sgml
*** doc/src/sgml/config.sgml	24 Aug 2009 20:08:31 -0000	1.224
--- doc/src/sgml/config.sgml	3 Sep 2009 22:03:00 -0000
*************** local0.*    /var/log/postgresql
*** 2408,2413 ****
--- 2408,2426 ----
           is dynamic-linker failure messages).
           This parameter can only be set at server start.
         </para>
+ 
+        <note>
+         <para>
+           The logging collector is designed to never lose messages.  This means
+           that in case of extremely high load, server processes could be
+           blocked due to trying to send additional log messages when the
+           collector has fallen behind.  In contrast, <application>syslog</>
+           prefers to drop messages if it cannot write them, which means it's
+           less reliable in those cases but it will not block the rest of the
+           system.
+         </para>
+        </note>
+ 
        </listitem>
       </varlistentry>