diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4
index 8d2a947c9679..d29bcdda78a0 100644
--- a/share/man/man4/ddb.4
+++ b/share/man/man4/ddb.4
@@ -60,7 +60,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 16, 2015
+.Dd November 5, 2015
 .Dt DDB 4
 .Os
 .Sh NAME
@@ -560,8 +560,8 @@ The same as "show pcpu", but for every CPU present in the system.
 .Pp
 .It Ic show Cm allrman
 Show information related with resource management, including
-interrupt request lines, DMA request lines, I/O ports and I/O memory
-addresses.
+interrupt request lines, DMA request lines, I/O ports, I/O memory
+addresses, and Resource IDs.
 .\"
 .Pp
 .It Ic show Cm apic
diff --git a/sys/kern/subr_rman.c b/sys/kern/subr_rman.c
index 61e951f4e5d7..310bd5e521ec 100644
--- a/sys/kern/subr_rman.c
+++ b/sys/kern/subr_rman.c
@@ -1051,7 +1051,8 @@ dump_rman(struct rman *rm)
 				devname = "nomatch";
 		} else
 			devname = NULL;
-		db_printf("    0x%lx-0x%lx ", r->r_start, r->r_end);
+		db_printf("    0x%lx-0x%lx (RID=%d) ",
+		    r->r_start, r->r_end, r->r_rid);
 		if (devname != NULL)
 			db_printf("(%s)\n", devname);
 		else