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Add description of pg_stat directory into doc.

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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 For better performance, <varname>stats_temp_directory</> can be
pointed at a RAM-based file system, decreasing physical I/O requirements. pointed at a RAM-based file system, decreasing physical I/O requirements.
When the server shuts down cleanly, 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 data is stored in the <filename>pg_stat</filename> subdirectory, so that
statistics can be retained across server restarts. When recovery is statistics can be retained across server restarts. When recovery is
performed at server start (e.g. after immediate shutdown, server crash, performed at server start (e.g. after immediate shutdown, server crash,
and point-in-time recovery), all statistics counters are reset. 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> <entry>Subdirectory containing exported snapshots</entry>
</row> </row>
<row>
<entry><filename>pg_stat</></entry>
<entry>Subdirectory containing permanent files for the statistics
subsystem</entry>
</row>
<row> <row>
<entry><filename>pg_stat_tmp</></entry> <entry><filename>pg_stat_tmp</></entry>
<entry>Subdirectory containing temporary files for the statistics <entry>Subdirectory containing temporary files for the statistics