diff --git a/doc/src/sgml/storage.sgml b/doc/src/sgml/storage.sgml
index 61b180f..3b8f5fd 100644
--- a/doc/src/sgml/storage.sgml
+++ b/doc/src/sgml/storage.sgml
@@ -96,7 +96,14 @@ Item
   is present only when <xref linkend="guc-logging-collector"> is
   activated and when at least one of <systemitem>stderr</> or
   <systemitem>csvlog</> value is present in
-  <xref linkend="guc-log-destination">.</para></entry>
+  <xref linkend="guc-log-destination">.</para>
+
+  <para>On a busy system <filename>current_logfiles</filename> might not be
+  updated immediately upon logfile rotation.  On an extremely busy system it
+  is possible, although highly unlikely, for a logfile to be "skipped" and
+  never appear in <filename>current_logfiles</filename>.</para>
+ </entry>
+
 </row>
 
 <row>