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Add pg_stat_reset_shared('bgwriter') to reset the cluster-wide shared

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statistics of the bgwriter.

Greg Smith
This commit is contained in:
Magnus Hagander
2010-01-19 14:11:32 +00:00
parent 4f15699d70
commit 7e40cdc075
6 changed files with 111 additions and 7 deletions
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21
src/include/pgstat.h
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@ -5,7 +5,7 @@
*
* Copyright (c) 2001-2010, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.86 2010/01/02 16:58:00 momjian Exp $
* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.87 2010/01/19 14:11:31 mha Exp $
* ----------
*/
#ifndef PGSTAT_H
@ -38,6 +38,7 @@ typedef enum StatMsgType
PGSTAT_MTYPE_TABPURGE,
PGSTAT_MTYPE_DROPDB,
PGSTAT_MTYPE_RESETCOUNTER,
PGSTAT_MTYPE_RESETSHAREDCOUNTER,
PGSTAT_MTYPE_AUTOVAC_START,
PGSTAT_MTYPE_VACUUM,
PGSTAT_MTYPE_ANALYZE,
@ -93,6 +94,12 @@ typedef struct PgStat_TableCounts
PgStat_Counter t_blocks_hit;
} PgStat_TableCounts;
/* Possible targets for resetting cluster-wide shared values */
typedef enum PgStat_Shared_Reset_Target
{
RESET_BGWRITER
} PgStat_Shared_Reset_Target;
/* ------------------------------------------------------------
* Structures kept in backend local memory while accumulating counts
@ -260,6 +267,16 @@ typedef struct PgStat_MsgResetcounter
Oid m_databaseid;
} PgStat_MsgResetcounter;
/* ----------
* PgStat_MsgResetsharedcounter Sent by the backend to tell the collector
* to reset a shared counter
* ----------
*/
typedef struct PgStat_MsgResetsharedcounter
{
PgStat_MsgHdr m_hdr;
PgStat_Shared_Reset_Target m_resettarget;
} PgStat_MsgResetsharedcounter;
/* ----------
* PgStat_MsgAutovacStart Sent by the autovacuum daemon to signal
@ -414,6 +431,7 @@ typedef union PgStat_Msg
PgStat_MsgTabpurge msg_tabpurge;
PgStat_MsgDropdb msg_dropdb;
PgStat_MsgResetcounter msg_resetcounter;
PgStat_MsgResetsharedcounter msg_resetsharedcounter;
PgStat_MsgAutovacStart msg_autovacuum;
PgStat_MsgVacuum msg_vacuum;
PgStat_MsgAnalyze msg_analyze;
@ -635,6 +653,7 @@ extern void pgstat_drop_database(Oid databaseid);
extern void pgstat_clear_snapshot(void);
extern void pgstat_reset_counters(void);
extern void pgstat_reset_shared_counters(const char *);
extern void pgstat_report_autovac(Oid dboid);
extern void pgstat_report_vacuum(Oid tableoid, bool shared, bool adopt_counts,