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Make the temporary directory for pgstat files configurable by the GUC

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variable stats_temp_directory, instead of requiring the admin to
mount/symlink the pg_stat_tmp directory manually.

For now the config variable is PGC_POSTMASTER. Room for further improvment
that would allow it to be changed on-the-fly.
This commit is contained in:
Magnus Hagander
2008-08-15 08:37:41 +00:00
parent f24f233f6a
commit 5b8eb2b4b9
6 changed files with 71 additions and 14 deletions
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6
doc/src/sgml/monitoring.sgml
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@@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.61 2008/08/05 12:09:30 mha Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.62 2008/08/15 08:37:41 mha Exp $ -->
<chapter id="monitoring">
<title>Monitoring Database Activity</title>
@@ -171,8 +171,8 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
These files are stored in the <filename>pg_stat_tmp</filename> subdirectory.
When the postmaster shuts down, a permanent copy of the statistics
data is stored in the <filename>global</filename> subdirectory. For increased
performance, it is possible to mount or symlink a RAM based
filesystem to the <filename>pg_stat_tmp</filename> directory.
performance, the parameter <xref linkend="guc-stats-temp-directory"> can
be pointed at a RAM based filesystem, decreasing physical I/O requirements.
</para>
</sect2>