diff --git a/sys/kern/subr_param.c b/sys/kern/subr_param.c
index f45a64dbd6fa..717ffed1d532 100644
--- a/sys/kern/subr_param.c
+++ b/sys/kern/subr_param.c
@@ -101,6 +101,12 @@ u_long	maxssiz;			/* max stack size */
 u_long	sgrowsiz;			/* amount to grow stack */
 
 SYSCTL_INT(_kern, OID_AUTO, hz, CTLFLAG_RDTUN, &hz, 0, "ticks/second");
+SYSCTL_INT(_kern, OID_AUTO, ncallout, CTLFLAG_RDTUN, &ncallout, 0,
+    "Number of pre-allocated timer events");
+SYSCTL_INT(_kern, OID_AUTO, nbuf, CTLFLAG_RDTUN, &nbuf, 0,
+    "Number of buffer-cache I/O buffers");
+SYSCTL_INT(_kern, OID_AUTO, nswbuf, CTLFLAG_RDTUN, &nswbuf, 0,
+    "Number of swap buffers");
 SYSCTL_INT(_kern, OID_AUTO, maxswzone, CTLFLAG_RDTUN, &maxswzone, 0,
     "max swmeta KVA storage");
 SYSCTL_INT(_kern, OID_AUTO, maxbcache, CTLFLAG_RDTUN, &maxbcache, 0,