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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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5
src/backend/access/transam/xact.c
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@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.229 2006/11/23 01:14:59 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.230 2006/12/06 18:06:47 neilc Exp $
*
*-------------------------------------------------------------------------
*/
@ -1416,6 +1416,7 @@ StartTransaction(void)
* GetCurrentTimestamp() call (which'd be expensive anyway).
*/
xactStartTimestamp = stmtStartTimestamp;
pgstat_report_txn_timestamp(xactStartTimestamp);
/*
* initialize current transaction state fields
@ -1628,6 +1629,7 @@ CommitTransaction(void)
/* smgrcommit already done */
AtEOXact_Files();
pgstat_count_xact_commit();
pgstat_report_txn_timestamp(0);
CurrentResourceOwner = NULL;
ResourceOwnerDelete(TopTransactionResourceOwner);
@ -1994,6 +1996,7 @@ AbortTransaction(void)
smgrabort();
AtEOXact_Files();
pgstat_count_xact_rollback();
pgstat_report_txn_timestamp(0);
/*
* State remains TRANS_ABORT until CleanupTransaction().