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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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33
src/backend/utils/adt/pgstatfuncs.c
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@ -79,6 +79,8 @@ extern Datum pg_stat_get_db_conflict_bufferpin(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_conflict_startup_deadlock(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_conflict_all(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_stat_reset_time(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_temp_files(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_temp_bytes(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_bgwriter_timed_checkpoints(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_bgwriter_requested_checkpoints(PG_FUNCTION_ARGS);
@ -1213,6 +1215,37 @@ pg_stat_get_db_stat_reset_time(PG_FUNCTION_ARGS)
PG_RETURN_TIMESTAMPTZ(result);
}
Datum
pg_stat_get_db_temp_files(PG_FUNCTION_ARGS)
{
Oid dbid = PG_GETARG_OID(0);
int64 result;
PgStat_StatDBEntry *dbentry;
if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
result = 0;
else
result = dbentry->n_temp_files;
PG_RETURN_INT64(result);
}
Datum
pg_stat_get_db_temp_bytes(PG_FUNCTION_ARGS)
{
Oid dbid = PG_GETARG_OID(0);
int64 result;
PgStat_StatDBEntry *dbentry;
if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
result = 0;
else
result = dbentry->n_temp_bytes;
PG_RETURN_INT64(result);
}
Datum
pg_stat_get_db_conflict_tablespace(PG_FUNCTION_ARGS)
{