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Add deadlock counter to pg_stat_database

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Adds a counter that tracks number of deadlocks that occurred in
each database to pg_stat_database.

Magnus Hagander, reviewed by Jaime Casanova
This commit is contained in:
Magnus Hagander
2012-01-26 15:58:19 +01:00
parent 0e549697d1
commit 61cb8c5abb
9 changed files with 91 additions and 8 deletions
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12
doc/src/sgml/monitoring.sgml
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@ -283,8 +283,8 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
read requests avoided by finding the block already in buffer cache),
number of rows returned, fetched, inserted, updated and deleted, the
total number of queries canceled due to conflict with recovery (on
standby servers), number and size of temporary files used, and time
of last statistics reset.
standby servers), number and size of temporary files used, total
number of deadlocks detected, and time of last statistics reset.
</entry>
</row>
@ -909,6 +909,14 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
</entry>
</row>
<row>
<entry><literal><function>pg_stat_get_db_deadlocks</function>(<type>oid</type>)</literal></entry>
<entry><type>bigint</type></entry>
<entry>
Number of deadlocks detected in the database
</entry>
</row>
<row>
<entry><literal><function>pg_stat_get_numscans</function>(<type>oid</type>)</literal></entry>
<entry><type>bigint</type></entry>