From: Bruce Momjian <bruce@momjian.us>
Date: Wed, 3 Jul 2013 18:19:44 +0000 (-0400)
Subject: pg_buffercache: document column meanings
X-Git-Tag: REL9_4_BETA1~1378
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f71939cd1ac765ba618115f40de4d9c47955a9ef;p=thirdparty%2Fpostgresql.git

pg_buffercache: document column meanings
Improve documentation for usagecount and relforknumber.
Backpatch to 9.3.
Suggestion from Satoshi Nagayasu
---

diff --git a/doc/src/sgml/pgbuffercache.sgml b/doc/src/sgml/pgbuffercache.sgml
index 1d7d95f9d7d..685351f11eb 100644
--- a/doc/src/sgml/pgbuffercache.sgml
+++ b/doc/src/sgml/pgbuffercache.sgml
@@ -84,7 +84,8 @@
       <entry><structfield>relforknumber</structfield></entry>
       <entry><type>smallint</type></entry>
       <entry></entry>
-      <entry>Fork number within the relation</entry>
+      <entry>Fork number within the relation;  see
+      <filename>include/storage/relfilenode.h</></entry>
      </row>
 
      <row>
@@ -98,7 +99,7 @@
       <entry><structfield>usagecount</structfield></entry>
       <entry><type>smallint</type></entry>
       <entry></entry>
-      <entry>Page LRU count</entry>
+      <entry>Clock-sweep access count</entry>
      </row>
 
     </tbody>