diff --git a/contrib/dblink/dblink.c b/contrib/dblink/dblink.c
index 41e1f6c91d6..195b278f559 100644
--- a/contrib/dblink/dblink.c
+++ b/contrib/dblink/dblink.c
@@ -130,6 +130,10 @@ static void restoreLocalGucs(int nestlevel);
static remoteConn *pconn = NULL;
static HTAB *remoteConnHash = NULL;
+/* custom wait event values, retrieved from shared memory */
+static uint32 dblink_we_connect = 0;
+static uint32 dblink_we_get_conn = 0;
+
/*
* Following is list that holds multiple remote connections.
* Calling convention of each dblink function changes to accept
@@ -202,8 +206,12 @@ dblink_get_conn(char *conname_or_str,
connstr = conname_or_str;
dblink_connstr_check(connstr);
+ /* first time, allocate or get the custom wait event */
+ if (dblink_we_get_conn == 0)
+ dblink_we_get_conn = WaitEventExtensionNew("DblinkGetConnect");
+
/* OK to make connection */
- conn = libpqsrv_connect(connstr, WAIT_EVENT_EXTENSION);
+ conn = libpqsrv_connect(connstr, dblink_we_get_conn);
if (PQstatus(conn) == CONNECTION_BAD)
{
@@ -292,8 +300,12 @@ dblink_connect(PG_FUNCTION_ARGS)
/* check password in connection string if not superuser */
dblink_connstr_check(connstr);
+ /* first time, allocate or get the custom wait event */
+ if (dblink_we_connect == 0)
+ dblink_we_connect = WaitEventExtensionNew("DblinkConnect");
+
/* OK to make connection */
- conn = libpqsrv_connect(connstr, WAIT_EVENT_EXTENSION);
+ conn = libpqsrv_connect(connstr, dblink_we_connect);
if (PQstatus(conn) == CONNECTION_BAD)
{
diff --git a/doc/src/sgml/dblink.sgml b/doc/src/sgml/dblink.sgml
index 7d25f24f490..e8de5a65cb6 100644
--- a/doc/src/sgml/dblink.sgml
+++ b/doc/src/sgml/dblink.sgml
@@ -13,6 +13,32 @@
session.
+
+ dblink can report the following wait events under the wait
+ event type Extension.
+
+
+
+
+ DblinkConnect
+
+
+ Waiting to establish a connection to a remote server.
+
+
+
+
+
+ DblinkGetConnect
+
+
+ Waiting to establish a connection to a remote server when it could not
+ be found in the list of already-opened connections.
+
+
+
+
+
See also , which provides roughly the same
functionality using a more modern and standards-compliant infrastructure.