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Add last-vacuum/analyze-time columns to the stats collector, both manual and

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issued by autovacuum.  Add accessor functions to them, and use those in the
pg_stat_*_tables system views.

Catalog version bumped due to changes in the pgstat views and the pgstat file.

Patch from Larry Rosenman, minor improvements by me.
This commit is contained in:
Alvaro Herrera
2006-05-19 19:08:27 +00:00
parent 09518fbdf4
commit 1f219cf433
8 changed files with 171 additions and 12 deletions
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38
doc/src/sgml/monitoring.sgml
View File

@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.31 2006/03/10 19:10:48 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.32 2006/05/19 19:08:26 alvherre Exp $ -->
<chapter id="monitoring">
<title>Monitoring Database Activity</title>
@ -250,7 +250,9 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
<row>
<entry><structname>pg_stat_all_tables</></entry>
<entry>For each table in the current database (including TOAST tables),
the table OID, schema and table name, number of sequential
the table OID, schema and table name, the last time the table was
vacuumed by the user and the autovacuum daemon, the last time the table
was analyzed by the user and the autovacuum daemon, number of sequential
scans initiated, number of live rows fetched by sequential
scans, number of index scans initiated (over all indexes
belonging to the table), number of live rows fetched by index
@ -543,6 +545,38 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
</entry>
</row>
<row>
<entry><literal><function>pg_stat_get_last_vacuum_time</function>(<type>oid</type>)</literal></entry>
<entry><type>timestamptz</type></entry>
<entry>
Time of the last vacuum initiated by the user
</entry>
</row>
<row>
<entry><literal><function>pg_stat_get_last_autovacuum_time</function>(<type>oid</type>)</literal></entry>
<entry><type>timestamptz</type></entry>
<entry>
Time of the last vacuum initiated by the autovacuum daemon
</entry>
</row>
<row>
<entry><literal><function>pg_stat_get_last_analyze_time</function>(<type>oid</type>)</literal></entry>
<entry><type>timestamptz</type></entry>
<entry>
Time of the last analyze initiated by the user
</entry>
</row>
<row>
<entry><literal><function>pg_stat_get_last_autoanalyze_time</function>(<type>oid</type>)</literal></entry>
<entry><type>timestamptz</type></entry>
<entry>
Time of the last analyze initiated by the autovacuum daemon
</entry>
</row>
<row>
<entry><literal><function>pg_stat_get_backend_idset</function>()</literal></entry>
<entry><type>setof integer</type></entry>