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Allow pg_statistics to be reset by calling pg_stat_reset().

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Christopher Kings-Lynne
This commit is contained in:
Bruce Momjian 2002-08-20 04:47:52 +00:00
parent de9801fc62
commit 5243f9a998
3 changed files with 24 additions and 2 deletions
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10
doc/src/sgml/monitoring.sgml
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@ -1,5 +1,5 @@
<!-- <!--
$Header: /cvsroot/pgsql/doc/src/sgml/monitoring.sgml,v 1.11 2002/08/17 13:04:14 momjian Exp $ $Header: /cvsroot/pgsql/doc/src/sgml/monitoring.sgml,v 1.12 2002/08/20 04:47:52 momjian Exp $
--> -->
<chapter id="monitoring"> <chapter id="monitoring">
@ -519,6 +519,14 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
Current query of backend process (NULL if caller is not superuser) Current query of backend process (NULL if caller is not superuser)
</entry> </entry>
</row> </row>
<row>
<entry><function>pg_stat_reset</function>()</entry>
<entry><type>boolean</type></entry>
<entry>
Reset all currently collected statistics.
</entry>
</row>
</tbody> </tbody>
</tgroup> </tgroup>
</table> </table>

12
src/backend/utils/adt/pgstatfuncs.c
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@ -20,6 +20,7 @@ extern Datum pg_stat_get_blocks_hit(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_idset(PG_FUNCTION_ARGS); extern Datum pg_stat_get_backend_idset(PG_FUNCTION_ARGS);
extern Datum pg_backend_pid(PG_FUNCTION_ARGS); extern Datum pg_backend_pid(PG_FUNCTION_ARGS);
extern Datum pg_stat_reset(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_pid(PG_FUNCTION_ARGS); extern Datum pg_stat_get_backend_pid(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_dbid(PG_FUNCTION_ARGS); extern Datum pg_stat_get_backend_dbid(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_userid(PG_FUNCTION_ARGS); extern Datum pg_stat_get_backend_userid(PG_FUNCTION_ARGS);
@ -218,6 +219,17 @@ pg_backend_pid(PG_FUNCTION_ARGS)
PG_RETURN_INT32(MyProcPid); PG_RETURN_INT32(MyProcPid);
} }
/*
* Built-in function for resetting the counters
*
*/
Datum
pg_stat_reset(PG_FUNCTION_ARGS)
{
pgstat_reset_counters();
PG_RETURN_BOOL(true);
}
Datum Datum
pg_stat_get_backend_pid(PG_FUNCTION_ARGS) pg_stat_get_backend_pid(PG_FUNCTION_ARGS)

4
src/include/catalog/pg_proc.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* $Id: pg_proc.h,v 1.257 2002/08/20 04:45:59 momjian Exp $ * $Id: pg_proc.h,v 1.258 2002/08/20 04:47:52 momjian Exp $
* *
* NOTES * NOTES
* The script catalog/genbki.sh reads this file and generates .bki * The script catalog/genbki.sh reads this file and generates .bki
@ -2715,6 +2715,8 @@ DATA(insert OID = 1936 ( pg_stat_get_backend_idset PGNSP PGUID 12 f f t t s 0
DESCR("Statistics: Currently active backend IDs"); DESCR("Statistics: Currently active backend IDs");
DATA(insert OID = 2026 ( pg_backend_pid PGNSP PGUID 12 f f t f s 0 23 "" pg_backend_pid - _null_ )); DATA(insert OID = 2026 ( pg_backend_pid PGNSP PGUID 12 f f t f s 0 23 "" pg_backend_pid - _null_ ));
DESCR("Statistics: Current backend PID"); DESCR("Statistics: Current backend PID");
DATA(insert OID = 2274 ( pg_stat_reset PGNSP PGUID 12 f f f f v 0 16 "" pg_stat_reset - _null_ ));
DESCR("Statistics: Reset collected statistics");
DATA(insert OID = 1937 ( pg_stat_get_backend_pid PGNSP PGUID 12 f f t f s 1 23 "23" pg_stat_get_backend_pid - _null_ )); DATA(insert OID = 1937 ( pg_stat_get_backend_pid PGNSP PGUID 12 f f t f s 1 23 "23" pg_stat_get_backend_pid - _null_ ));
DESCR("Statistics: PID of backend"); DESCR("Statistics: PID of backend");
DATA(insert OID = 1938 ( pg_stat_get_backend_dbid PGNSP PGUID 12 f f t f s 1 26 "23" pg_stat_get_backend_dbid - _null_ )); DATA(insert OID = 1938 ( pg_stat_get_backend_dbid PGNSP PGUID 12 f f t f s 1 26 "23" pg_stat_get_backend_dbid - _null_ ));