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Track temporary file count and size in pg_stat_database

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Add counters for number and size of temporary files used
for spill-to-disk queries for each database to the
pg_stat_database view.

Tomas Vondra, review by Magnus Hagander
This commit is contained in:
Magnus Hagander
2012-01-26 14:41:19 +01:00
parent 9d35116611
commit bc3347484a
9 changed files with 150 additions and 25 deletions
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19
src/include/pgstat.h
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@ -47,7 +47,8 @@ typedef enum StatMsgType
PGSTAT_MTYPE_BGWRITER,
PGSTAT_MTYPE_FUNCSTAT,
PGSTAT_MTYPE_FUNCPURGE,
PGSTAT_MTYPE_RECOVERYCONFLICT
PGSTAT_MTYPE_RECOVERYCONFLICT,
PGSTAT_MTYPE_TEMPFILE
} StatMsgType;
/* ----------
@ -376,6 +377,18 @@ typedef struct PgStat_MsgRecoveryConflict
int m_reason;
} PgStat_MsgRecoveryConflict;
/* ----------
* PgStat_MsgTempFile Sent by the backend upon creating a temp file
* ----------
*/
typedef struct PgStat_MsgTempFile
{
PgStat_MsgHdr m_hdr;
Oid m_databaseid;
size_t m_filesize;
} PgStat_MsgTempFile;
/* ----------
* PgStat_FunctionCounts The actual per-function counts kept by a backend
*
@ -507,6 +520,9 @@ typedef struct PgStat_StatDBEntry
PgStat_Counter n_conflict_snapshot;
PgStat_Counter n_conflict_bufferpin;
PgStat_Counter n_conflict_startup_deadlock;
PgStat_Counter n_temp_files;
PgStat_Counter n_temp_bytes;
TimestampTz stat_reset_timestamp;
@ -735,6 +751,7 @@ extern void pgstat_initialize(void);
extern void pgstat_bestart(void);
extern void pgstat_report_activity(BackendState state, const char *cmd_str);
extern void pgstat_report_tempfile(size_t filesize);
extern void pgstat_report_appname(const char *appname);
extern void pgstat_report_xact_timestamp(TimestampTz tstamp);
extern void pgstat_report_waiting(bool waiting);