diff --git a/include/haproxy/server-t.h b/include/haproxy/server-t.h
index 4b26e43..de4a2d5 100644
--- a/include/haproxy/server-t.h
+++ b/include/haproxy/server-t.h
@@ -222,7 +222,7 @@
 	struct be_counters counters;		/* statistics counters */
 
 	struct eb_root pendconns;		/* pending connections */
-	struct mt_list actconns;		/* active connections (used by "shutdown server sessions") */
+	struct mt_list actconns[MAX_THREADS];	/* active connections (used by "shutdown server sessions") */
 	struct mt_list *idle_conns;		/* shareable idle connections*/
 	struct mt_list *safe_conns;		/* safe idle connections */
 	struct list *available_conns;           /* Connection in used, but with still new streams available */
diff --git a/include/haproxy/stream.h b/include/haproxy/stream.h
index 8500fb6..735ef70 100644
--- a/include/haproxy/stream.h
+++ b/include/haproxy/stream.h
@@ -343,7 +343,13 @@
 
 static inline void stream_add_srv_conn(struct stream *sess, struct server *srv)
 {
-	MT_LIST_ADD(&srv->actconns, &sess->by_srv);
+	/* note: this inserts in reverse order but we do not care, it's only
+	 * used for massive kills (i.e. almost never). MT_LIST_ADD() is a bit
+	 * faster than MT_LIST_ADDQ under contention due to a faster recovery
+	 * from a conflict with an adjacent MT_LIST_DEL, and using it improves
+	 * the performance by about 3% on 32-cores.
+	 */
+	MT_LIST_ADD(&srv->actconns[tid], &sess->by_srv);
 	HA_ATOMIC_STORE(&sess->srv_conn, srv);
 }
 
diff --git a/src/hlua.c b/src/hlua.c
index 8dd2f31..8244593 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -8750,7 +8750,8 @@
 	socket_tcp.next = NULL;
 	socket_tcp.proxy = &socket_proxy;
 	socket_tcp.obj_type = OBJ_TYPE_SERVER;
-	MT_LIST_INIT(&socket_tcp.actconns);
+	for (i = 0; i < MAX_THREADS; i++)
+		MT_LIST_INIT(&socket_tcp.actconns[i]);
 	socket_tcp.pendconns = EB_ROOT;
 	socket_tcp.idle_conns = NULL;
 	socket_tcp.safe_conns = NULL;
@@ -8795,7 +8796,8 @@
 	socket_ssl.next = NULL;
 	socket_ssl.proxy = &socket_proxy;
 	socket_ssl.obj_type = OBJ_TYPE_SERVER;
-	MT_LIST_INIT(&socket_ssl.actconns);
+	for (i = 0; i < MAX_THREADS; i++)
+		MT_LIST_INIT(&socket_ssl.actconns[i]);
 	socket_ssl.pendconns = EB_ROOT;
 	socket_ssl.idle_conns = NULL;
 	socket_ssl.safe_conns = NULL;
diff --git a/src/server.c b/src/server.c
index 13eb676..c01c948 100644
--- a/src/server.c
+++ b/src/server.c
@@ -865,10 +865,12 @@
 {
 	struct stream *stream;
 	struct mt_list *elt1, elt2;
+	int thr;
 
-	mt_list_for_each_entry_safe(stream, &srv->actconns, by_srv, elt1, elt2)
-		if (stream->srv_conn == srv)
-			stream_shutdown(stream, why);
+	for (thr = 0; thr < global.nbthread; thr++)
+		mt_list_for_each_entry_safe(stream, &srv->actconns[thr], by_srv, elt1, elt2)
+			if (stream->srv_conn == srv)
+				stream_shutdown(stream, why);
 }
 
 /* Shutdown all connections of all backup servers of a proxy. The caller must
@@ -1718,6 +1720,7 @@
 struct server *new_server(struct proxy *proxy)
 {
 	struct server *srv;
+	int i;
 
 	srv = calloc(1, sizeof *srv);
 	if (!srv)
@@ -1725,7 +1728,8 @@
 
 	srv->obj_type = OBJ_TYPE_SERVER;
 	srv->proxy = proxy;
-	MT_LIST_INIT(&srv->actconns);
+	for (i = 0; i < MAX_THREADS; i++)
+		MT_LIST_INIT(&srv->actconns[i]);
 	srv->pendconns = EB_ROOT;
 
 	srv->next_state = SRV_ST_RUNNING; /* early server setup */