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Add a txn_start column to pg_stat_activity. This makes it easier to

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identify long-running transactions. Since we already need to record
the transaction-start time (e.g. for now()), we don't need any
additional system calls to report this information.

Catversion bumped, initdb required.
This commit is contained in:
Neil Conway
2006-12-06 18:06:48 +00:00
parent dd740e1fd0
commit 886a02d1cb
9 changed files with 77 additions and 21 deletions
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6
src/include/pgstat.h
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@ -5,7 +5,7 @@
*
* Copyright (c) 2001-2006, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.50 2006/10/04 00:30:06 momjian Exp $
* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.51 2006/12/06 18:06:47 neilc Exp $
* ----------
*/
#ifndef PGSTAT_H
@ -325,8 +325,9 @@ typedef struct PgBackendStatus
/* The entry is valid iff st_procpid > 0, unused if st_procpid == 0 */
int st_procpid;
/* Times of backend process start and current activity start */
/* Times when current backend, transaction, and activity started */
TimestampTz st_proc_start_timestamp;
TimestampTz st_txn_start_timestamp;
TimestampTz st_activity_start_timestamp;
/* Database OID, owning user's OID, connection client address */
@ -390,6 +391,7 @@ extern void pgstat_report_analyze(Oid tableoid, bool shared,
extern void pgstat_bestart(void);
extern void pgstat_report_activity(const char *what);
extern void pgstat_report_txn_timestamp(TimestampTz tstamp);
extern void pgstat_report_waiting(bool waiting);
extern void pgstat_initstats(PgStat_Info *stats, Relation rel);