Add a few more DTrace probes to the backend.

Robert Lor

1 files changed, 6 insertions, 1 deletions

diff --git a/src/backend/access/transam/subtrans.c b/src/backend/access/transam/subtrans.c
index 7d47f5154ac..67a9518cce7 100644
--- a/src/backend/access/transam/subtrans.c
+++ b/src/backend/access/transam/subtrans.c
@@ -22,7 +22,7 @@
  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/access/transam/subtrans.c,v 1.22 2008/03/26 18:48:59 alvherre Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/subtrans.c,v 1.23 2008/08/01 13:16:08 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -31,6 +31,7 @@
 #include "access/slru.h"
 #include "access/subtrans.h"
 #include "access/transam.h"
+#include "pg_trace.h"
 #include "utils/snapmgr.h"
 
 
@@ -265,7 +266,9 @@ ShutdownSUBTRANS(void)
 	 * This is not actually necessary from a correctness point of view. We do
 	 * it merely as a debugging aid.
 	 */
+	TRACE_POSTGRESQL_SUBTRANS_CHECKPOINT_START(false);
 	SimpleLruFlush(SubTransCtl, false);
+	TRACE_POSTGRESQL_SUBTRANS_CHECKPOINT_DONE(false);
 }
 
 /*
@@ -281,7 +284,9 @@ CheckPointSUBTRANS(void)
 	 * it merely to improve the odds that writing of dirty pages is done by
 	 * the checkpoint process and not by backends.
 	 */
+	TRACE_POSTGRESQL_SUBTRANS_CHECKPOINT_START(true);
 	SimpleLruFlush(SubTransCtl, true);
+	TRACE_POSTGRESQL_SUBTRANS_CHECKPOINT_DONE(true);
 }