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Add new columns for tuple statistics on a database level to
pg_stat_database.
This commit is contained in:
Magnus Hagander
parent
c4fdfb8de3
commit
51d7741db1
@ -1,4 +1,4 @@
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<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.46 2007/02/07 23:11:29 tgl Exp $ -->
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<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.47 2007/03/16 17:57:35 mha Exp $ -->
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<chapter id="monitoring">
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<title>Monitoring Database Activity</title>
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@ -265,8 +265,9 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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<entry>One row per database, showing database OID, database name,
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number of active server processes connected to that database,
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number of transactions committed and rolled back in that database,
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total disk blocks read, and total buffer hits (i.e., block
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read requests avoided by finding the block already in buffer cache).
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total disk blocks read, total buffer hits (i.e., block
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read requests avoided by finding the block already in buffer cache),
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number of rows returned, inserted, updated and deleted.
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</entry>
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</row>
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@ -502,6 +503,46 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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</entry>
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</row>
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<row>
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<entry><literal><function>pg_stat_get_db_tuples_returned</function>(<type>oid</type>)</literal></entry>
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<entry><type>bigint</type></entry>
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<entry>
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Number of tuples returned for database
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</entry>
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</row>
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<row>
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<entry><literal><function>pg_stat_get_db_tuples_fetched</function>(<type>oid</type>)</literal></entry>
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<entry><type>bigint</type></entry>
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<entry>
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Number of tuples fetched for database
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</entry>
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</row>
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<row>
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<entry><literal><function>pg_stat_get_db_tuples_inserted</function>(<type>oid</type>)</literal></entry>
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<entry><type>bigint</type></entry>
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<entry>
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Number of tuples inserted in database
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</entry>
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</row>
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<row>
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<entry><literal><function>pg_stat_get_db_tuples_updated</function>(<type>oid</type>)</literal></entry>
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<entry><type>bigint</type></entry>
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<entry>
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Number of tuples updated in database
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</entry>
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</row>
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<row>
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<entry><literal><function>pg_stat_get_db_tuples_deleted</function>(<type>oid</type>)</literal></entry>
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<entry><type>bigint</type></entry>
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<entry>
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Number of tuples deleted in database
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</entry>
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</row>
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<row>
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<entry><literal><function>pg_stat_get_numscans</function>(<type>oid</type>)</literal></entry>
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<entry><type>bigint</type></entry>
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@ -3,7 +3,7 @@
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*
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* Copyright (c) 1996-2007, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.35 2007/01/05 22:19:25 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.36 2007/03/16 17:57:36 mha Exp $
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*/
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CREATE VIEW pg_roles AS
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@ -357,5 +357,10 @@ CREATE VIEW pg_stat_database AS
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pg_stat_get_db_xact_rollback(D.oid) AS xact_rollback,
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pg_stat_get_db_blocks_fetched(D.oid) -
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pg_stat_get_db_blocks_hit(D.oid) AS blks_read,
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pg_stat_get_db_blocks_hit(D.oid) AS blks_hit
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pg_stat_get_db_blocks_hit(D.oid) AS blks_hit,
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pg_stat_get_db_tuples_returned(D.oid) AS tup_returned,
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pg_stat_get_db_tuples_fetched(D.oid) AS tup_fetched,
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pg_stat_get_db_tuples_inserted(D.oid) AS tup_inserted,
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pg_stat_get_db_tuples_updated(D.oid) AS tup_updated,
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pg_stat_get_db_tuples_deleted(D.oid) AS tup_deleted
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FROM pg_database D;
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@ -13,7 +13,7 @@
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*
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* Copyright (c) 2001-2007, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.148 2007/03/01 20:06:56 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.149 2007/03/16 17:57:36 mha Exp $
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* ----------
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*/
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#include "postgres.h"
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@ -1970,6 +1970,11 @@ pgstat_get_db_entry(Oid databaseid, bool create)
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result->n_xact_rollback = 0;
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result->n_blocks_fetched = 0;
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result->n_blocks_hit = 0;
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result->n_tuples_returned = 0;
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result->n_tuples_fetched = 0;
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result->n_tuples_inserted = 0;
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result->n_tuples_updated = 0;
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result->n_tuples_deleted = 0;
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result->last_autovac_time = 0;
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memset(&hash_ctl, 0, sizeof(hash_ctl));
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@ -2413,6 +2418,15 @@ pgstat_recv_tabstat(PgStat_MsgTabstat *msg, int len)
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tabentry->blocks_hit += tabmsg[i].t_blocks_hit;
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}
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/*
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* Add table stats to the database entry.
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*/
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dbentry->n_tuples_returned += tabmsg[i].t_tuples_returned;
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dbentry->n_tuples_fetched += tabmsg[i].t_tuples_fetched;
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dbentry->n_tuples_inserted += tabmsg[i].t_tuples_inserted;
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dbentry->n_tuples_updated += tabmsg[i].t_tuples_updated;
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dbentry->n_tuples_deleted += tabmsg[i].t_tuples_deleted;
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/*
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* And add the block IO to the database entry.
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*/
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.39 2007/02/27 23:48:08 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.40 2007/03/16 17:57:36 mha Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -55,6 +55,11 @@ extern Datum pg_stat_get_db_xact_commit(PG_FUNCTION_ARGS);
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extern Datum pg_stat_get_db_xact_rollback(PG_FUNCTION_ARGS);
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extern Datum pg_stat_get_db_blocks_fetched(PG_FUNCTION_ARGS);
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extern Datum pg_stat_get_db_blocks_hit(PG_FUNCTION_ARGS);
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extern Datum pg_stat_get_db_tuples_returned(PG_FUNCTION_ARGS);
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extern Datum pg_stat_get_db_tuples_fetched(PG_FUNCTION_ARGS);
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extern Datum pg_stat_get_db_tuples_inserted(PG_FUNCTION_ARGS);
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extern Datum pg_stat_get_db_tuples_updated(PG_FUNCTION_ARGS);
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extern Datum pg_stat_get_db_tuples_deleted(PG_FUNCTION_ARGS);
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extern Datum pg_stat_clear_snapshot(PG_FUNCTION_ARGS);
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extern Datum pg_stat_reset(PG_FUNCTION_ARGS);
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@ -672,6 +677,86 @@ pg_stat_get_db_blocks_hit(PG_FUNCTION_ARGS)
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}
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Datum
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pg_stat_get_db_tuples_returned(PG_FUNCTION_ARGS)
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{
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Oid dbid = PG_GETARG_OID(0);
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int64 result;
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PgStat_StatDBEntry *dbentry;
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if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
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result = 0;
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else
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result = (int64) (dbentry->n_tuples_returned);
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PG_RETURN_INT64(result);
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}
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Datum
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pg_stat_get_db_tuples_fetched(PG_FUNCTION_ARGS)
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{
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Oid dbid = PG_GETARG_OID(0);
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int64 result;
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PgStat_StatDBEntry *dbentry;
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if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
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result = 0;
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else
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result = (int64) (dbentry->n_tuples_fetched);
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PG_RETURN_INT64(result);
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}
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Datum
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pg_stat_get_db_tuples_inserted(PG_FUNCTION_ARGS)
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{
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Oid dbid = PG_GETARG_OID(0);
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int64 result;
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PgStat_StatDBEntry *dbentry;
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if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
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result = 0;
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else
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result = (int64) (dbentry->n_tuples_inserted);
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PG_RETURN_INT64(result);
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}
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Datum
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pg_stat_get_db_tuples_updated(PG_FUNCTION_ARGS)
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{
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Oid dbid = PG_GETARG_OID(0);
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int64 result;
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PgStat_StatDBEntry *dbentry;
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if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
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result = 0;
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else
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result = (int64) (dbentry->n_tuples_updated);
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PG_RETURN_INT64(result);
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}
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Datum
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pg_stat_get_db_tuples_deleted(PG_FUNCTION_ARGS)
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{
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Oid dbid = PG_GETARG_OID(0);
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int64 result;
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PgStat_StatDBEntry *dbentry;
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if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
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result = 0;
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else
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result = (int64) (dbentry->n_tuples_deleted);
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PG_RETURN_INT64(result);
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}
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/* Discard the active statistics snapshot */
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Datum
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pg_stat_clear_snapshot(PG_FUNCTION_ARGS)
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@ -37,7 +37,7 @@
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* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.389 2007/03/02 00:48:44 tgl Exp $
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* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.390 2007/03/16 17:57:36 mha Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -53,6 +53,6 @@
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*/
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/* yyyymmddN */
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#define CATALOG_VERSION_NO 200703011
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#define CATALOG_VERSION_NO 200703161
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#endif
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.447 2007/03/03 19:52:46 momjian Exp $
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* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.448 2007/03/16 17:57:36 mha Exp $
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*
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* NOTES
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* The script catalog/genbki.sh reads this file and generates .bki
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@ -2974,6 +2974,16 @@ DATA(insert OID = 1944 ( pg_stat_get_db_blocks_fetched PGNSP PGUID 12 1 0 f f t
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DESCR("Statistics: Blocks fetched for database");
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DATA(insert OID = 1945 ( pg_stat_get_db_blocks_hit PGNSP PGUID 12 1 0 f f t f s 1 20 "26" _null_ _null_ _null_ pg_stat_get_db_blocks_hit - _null_ ));
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DESCR("Statistics: Blocks found in cache for database");
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DATA(insert OID = 2758 ( pg_stat_get_db_tuples_returned PGNSP PGUID 12 1 0 f f t f s 1 20 "26" _null_ _null_ _null_ pg_stat_get_db_tuples_returned - _null_ ));
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DESCR("Statistics: Tuples returned for database");
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DATA(insert OID = 2759 ( pg_stat_get_db_tuples_fetched PGNSP PGUID 12 1 0 f f t f s 1 20 "26" _null_ _null_ _null_ pg_stat_get_db_tuples_fetched - _null_ ));
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DESCR("Statistics: Tuples fetched for database");
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DATA(insert OID = 2760 ( pg_stat_get_db_tuples_inserted PGNSP PGUID 12 1 0 f f t f s 1 20 "26" _null_ _null_ _null_ pg_stat_get_db_tuples_inserted - _null_ ));
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DESCR("Statistics: Tuples inserted in database");
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DATA(insert OID = 2761 ( pg_stat_get_db_tuples_updated PGNSP PGUID 12 1 0 f f t f s 1 20 "26" _null_ _null_ _null_ pg_stat_get_db_tuples_updated - _null_ ));
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DESCR("Statistics: Tuples updated in database");
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DATA(insert OID = 2762 ( pg_stat_get_db_tuples_deleted PGNSP PGUID 12 1 0 f f t f s 1 20 "26" _null_ _null_ _null_ pg_stat_get_db_tuples_deleted - _null_ ));
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DESCR("Statistics: Tuples deleted in database");
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DATA(insert OID = 2230 ( pg_stat_clear_snapshot PGNSP PGUID 12 1 0 f f f f v 0 2278 "" _null_ _null_ _null_ pg_stat_clear_snapshot - _null_ ));
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DESCR("Statistics: Discard current transaction's statistics snapshot");
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DATA(insert OID = 2274 ( pg_stat_reset PGNSP PGUID 12 1 0 f f f f v 0 2278 "" _null_ _null_ _null_ pg_stat_reset - _null_ ));
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@ -5,7 +5,7 @@
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*
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* Copyright (c) 2001-2007, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.54 2007/02/09 16:12:19 tgl Exp $
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* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.55 2007/03/16 17:57:36 mha Exp $
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* ----------
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*/
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#ifndef PGSTAT_H
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@ -251,6 +251,11 @@ typedef struct PgStat_StatDBEntry
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PgStat_Counter n_xact_rollback;
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PgStat_Counter n_blocks_fetched;
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PgStat_Counter n_blocks_hit;
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PgStat_Counter n_tuples_returned;
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PgStat_Counter n_tuples_fetched;
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PgStat_Counter n_tuples_inserted;
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PgStat_Counter n_tuples_updated;
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PgStat_Counter n_tuples_deleted;
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TimestampTz last_autovac_time;
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/*
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@ -1292,7 +1292,7 @@ SELECT viewname, definition FROM pg_views WHERE schemaname <> 'information_schem
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pg_stat_activity | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid, pg_stat_get_backend_userid(s.backendid) AS usesysid, u.rolname AS usename, pg_stat_get_backend_activity(s.backendid) AS current_query, pg_stat_get_backend_waiting(s.backendid) AS waiting, pg_stat_get_backend_txn_start(s.backendid) AS txn_start, pg_stat_get_backend_activity_start(s.backendid) AS query_start, pg_stat_get_backend_start(s.backendid) AS backend_start, pg_stat_get_backend_client_addr(s.backendid) AS client_addr, pg_stat_get_backend_client_port(s.backendid) AS client_port FROM pg_database d, (SELECT pg_stat_get_backend_idset() AS backendid) s, pg_authid u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND (pg_stat_get_backend_userid(s.backendid) = u.oid));
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pg_stat_all_indexes | SELECT c.oid AS relid, i.oid AS indexrelid, n.nspname AS schemaname, c.relname, i.relname AS indexrelname, pg_stat_get_numscans(i.oid) AS idx_scan, pg_stat_get_tuples_returned(i.oid) AS idx_tup_read, pg_stat_get_tuples_fetched(i.oid) AS idx_tup_fetch FROM (((pg_class c JOIN pg_index x ON ((c.oid = x.indrelid))) JOIN pg_class i ON ((i.oid = x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind = ANY (ARRAY['r'::"char", 't'::"char"]));
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pg_stat_all_tables | SELECT c.oid AS relid, n.nspname AS schemaname, c.relname, pg_stat_get_numscans(c.oid) AS seq_scan, pg_stat_get_tuples_returned(c.oid) AS seq_tup_read, (sum(pg_stat_get_numscans(i.indexrelid)))::bigint AS idx_scan, ((sum(pg_stat_get_tuples_fetched(i.indexrelid)))::bigint + pg_stat_get_tuples_fetched(c.oid)) AS idx_tup_fetch, pg_stat_get_tuples_inserted(c.oid) AS n_tup_ins, pg_stat_get_tuples_updated(c.oid) AS n_tup_upd, pg_stat_get_tuples_deleted(c.oid) AS n_tup_del, pg_stat_get_live_tuples(c.oid) AS n_live_tup, pg_stat_get_dead_tuples(c.oid) AS n_dead_tup, pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum, pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum, pg_stat_get_last_analyze_time(c.oid) AS last_analyze, pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze FROM ((pg_class c LEFT JOIN pg_index i ON ((c.oid = i.indrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind = ANY (ARRAY['r'::"char", 't'::"char"])) GROUP BY c.oid, n.nspname, c.relname;
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pg_stat_database | SELECT d.oid AS datid, d.datname, pg_stat_get_db_numbackends(d.oid) AS numbackends, pg_stat_get_db_xact_commit(d.oid) AS xact_commit, pg_stat_get_db_xact_rollback(d.oid) AS xact_rollback, (pg_stat_get_db_blocks_fetched(d.oid) - pg_stat_get_db_blocks_hit(d.oid)) AS blks_read, pg_stat_get_db_blocks_hit(d.oid) AS blks_hit FROM pg_database d;
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pg_stat_database | SELECT d.oid AS datid, d.datname, pg_stat_get_db_numbackends(d.oid) AS numbackends, pg_stat_get_db_xact_commit(d.oid) AS xact_commit, pg_stat_get_db_xact_rollback(d.oid) AS xact_rollback, (pg_stat_get_db_blocks_fetched(d.oid) - pg_stat_get_db_blocks_hit(d.oid)) AS blks_read, pg_stat_get_db_blocks_hit(d.oid) AS blks_hit, pg_stat_get_db_tuples_returned(d.oid) AS tup_returned, pg_stat_get_db_tuples_fetched(d.oid) AS tup_fetched, pg_stat_get_db_tuples_inserted(d.oid) AS tup_inserted, pg_stat_get_db_tuples_updated(d.oid) AS tup_updated, pg_stat_get_db_tuples_deleted(d.oid) AS tup_deleted FROM pg_database d;
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pg_stat_sys_indexes | SELECT pg_stat_all_indexes.relid, pg_stat_all_indexes.indexrelid, pg_stat_all_indexes.schemaname, pg_stat_all_indexes.relname, pg_stat_all_indexes.indexrelname, pg_stat_all_indexes.idx_scan, pg_stat_all_indexes.idx_tup_read, pg_stat_all_indexes.idx_tup_fetch FROM pg_stat_all_indexes WHERE (pg_stat_all_indexes.schemaname = ANY (ARRAY['pg_catalog'::"name", 'pg_toast'::"name", 'information_schema'::"name"]));
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pg_stat_sys_tables | SELECT pg_stat_all_tables.relid, pg_stat_all_tables.schemaname, pg_stat_all_tables.relname, pg_stat_all_tables.seq_scan, pg_stat_all_tables.seq_tup_read, pg_stat_all_tables.idx_scan, pg_stat_all_tables.idx_tup_fetch, pg_stat_all_tables.n_tup_ins, pg_stat_all_tables.n_tup_upd, pg_stat_all_tables.n_tup_del, pg_stat_all_tables.n_live_tup, pg_stat_all_tables.n_dead_tup, pg_stat_all_tables.last_vacuum, pg_stat_all_tables.last_autovacuum, pg_stat_all_tables.last_analyze, pg_stat_all_tables.last_autoanalyze FROM pg_stat_all_tables WHERE (pg_stat_all_tables.schemaname = ANY (ARRAY['pg_catalog'::"name", 'pg_toast'::"name", 'information_schema'::"name"]));
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pg_stat_user_indexes | SELECT pg_stat_all_indexes.relid, pg_stat_all_indexes.indexrelid, pg_stat_all_indexes.schemaname, pg_stat_all_indexes.relname, pg_stat_all_indexes.indexrelname, pg_stat_all_indexes.idx_scan, pg_stat_all_indexes.idx_tup_read, pg_stat_all_indexes.idx_tup_fetch FROM pg_stat_all_indexes WHERE (pg_stat_all_indexes.schemaname <> ALL (ARRAY['pg_catalog'::"name", 'pg_toast'::"name", 'information_schema'::"name"]));
|
||||
|
||||
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