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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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50
src/backend/postmaster/pgstat.c
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@@ -286,6 +286,7 @@ static void pgstat_recv_bgwriter(PgStat_MsgBgWriter *msg, int len);
static void pgstat_recv_funcstat(PgStat_MsgFuncstat *msg, int len);
static void pgstat_recv_funcpurge(PgStat_MsgFuncpurge *msg, int len);
static void pgstat_recv_recoveryconflict(PgStat_MsgRecoveryConflict *msg, int len);
static void pgstat_recv_tempfile(PgStat_MsgTempFile *msg, int len);
/* ------------------------------------------------------------
@@ -1339,6 +1340,29 @@ pgstat_report_recovery_conflict(int reason)
pgstat_send(&msg, sizeof(msg));
}
/* --------
* pgstat_report_tempfile() -
*
* Tell the collector about a temporary file.
* --------
*/
void
pgstat_report_tempfile(size_t filesize)
{
PgStat_MsgTempFile msg;
if (pgStatSock == PGINVALID_SOCKET || !pgstat_track_counts)
return;
pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_TEMPFILE);
msg.m_databaseid = MyDatabaseId;
msg.m_filesize = filesize;
pgstat_send(&msg, sizeof(msg));
}
;
/* ----------
* pgstat_ping() -
*
@@ -3218,6 +3242,10 @@ PgstatCollectorMain(int argc, char *argv[])
pgstat_recv_recoveryconflict((PgStat_MsgRecoveryConflict *) &msg, len);
break;
case PGSTAT_MTYPE_TEMPFILE:
pgstat_recv_tempfile((PgStat_MsgTempFile *) &msg, len);
break;
default:
break;
}
@@ -3299,6 +3327,8 @@ pgstat_get_db_entry(Oid databaseid, bool create)
result->n_conflict_snapshot = 0;
result->n_conflict_bufferpin = 0;
result->n_conflict_startup_deadlock = 0;
result->n_temp_files = 0;
result->n_temp_bytes = 0;
result->stat_reset_timestamp = GetCurrentTimestamp();
@@ -4210,6 +4240,8 @@ pgstat_recv_resetcounter(PgStat_MsgResetcounter *msg, int len)
dbentry->n_tuples_updated = 0;
dbentry->n_tuples_deleted = 0;
dbentry->last_autovac_time = 0;
dbentry->n_temp_bytes = 0;
dbentry->n_temp_files = 0;
dbentry->stat_reset_timestamp = GetCurrentTimestamp();
@@ -4435,6 +4467,24 @@ pgstat_recv_recoveryconflict(PgStat_MsgRecoveryConflict *msg, int len)
}
}
/* ----------
* pgstat_recv_tempfile() -
*
* Process as PGSTAT_MTYPE_TEMPFILE message.
* ----------
*/
static void
pgstat_recv_tempfile(PgStat_MsgTempFile *msg, int len)
{
PgStat_StatDBEntry *dbentry;
dbentry = pgstat_get_db_entry(msg->m_databaseid, true);
dbentry->n_temp_bytes += msg->m_filesize;
dbentry->n_temp_files += 1;
}
/* ----------
* pgstat_recv_funcstat() -
*