From: Bruce Momjian <bruce@momjian.us>
Date: Sat, 1 Feb 2014 02:28:15 +0000 (-0500)
Subject: doc: mention statistics reset during crash recovery
X-Git-Tag: REL9_4_BETA1~558
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=637fab6e575b36d3a4368e7c2b923231c5504035;p=thirdparty%2Fpostgresql.git

doc: mention statistics reset during crash recovery

Takayuki Tsunakawa
---

diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index d301d9c5c3c..a37e6b6f33b 100644
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -185,9 +185,11 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
    <filename>pg_stat_tmp</filename> by default.
    For better performance, <varname>stats_temp_directory</> can be
    pointed at a RAM-based file system, decreasing physical I/O requirements.
-   When the server shuts down, a permanent copy of the statistics
+   When the server shuts down cleanly, a permanent copy of the statistics
    data is stored in the <filename>global</filename> subdirectory, so that
-   statistics can be retained across server restarts.
+   statistics can be retained across server restarts.  When recovery is
+   performed at server start (e.g. after immediate shutdown, server crash,
+   and point-in-time recovery), all statistics counters are reset.
   </para>
 
  </sect2>