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Add description of pg_stat directory into doc. 

Back-patch to 9.3 where pg_stat directory was introduced.
This commit is contained in:
Fujii Masao 2014-06-05 01:43:17 +09:00
parent 654e8e4447
commit c8c9c1f5a3
2 changed files with 7 additions and 1 deletions
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2
doc/src/sgml/monitoring.sgml
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@ -186,7 +186,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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 cleanly, a permanent copy of the statistics
data is stored in the <filename>global</filename> subdirectory, so that
data is stored in the <filename>pg_stat</filename> subdirectory, so that
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.

6
doc/src/sgml/storage.sgml
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@ -103,6 +103,12 @@ Item
<entry>Subdirectory containing exported snapshots</entry>
</row>
<row>
<entry><filename>pg_stat</></entry>
<entry>Subdirectory containing permanent files for the statistics
subsystem</entry>
</row>
<row>
<entry><filename>pg_stat_tmp</></entry>
<entry>Subdirectory containing temporary files for the statistics