diff --git a/sys/kern/subr_param.c b/sys/kern/subr_param.c
index c56ab86325f6..ed0437f89ea7 100644
--- a/sys/kern/subr_param.c
+++ b/sys/kern/subr_param.c
@@ -100,29 +100,30 @@ u_long	dflssiz;			/* initial stack size limit */
 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, hz, CTLFLAG_RDTUN, &hz, 0,
+    "Number of clock ticks per 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");
+    "Number of buffers in the buffer cache");
 SYSCTL_INT(_kern, OID_AUTO, nswbuf, CTLFLAG_RDTUN, &nswbuf, 0,
     "Number of swap buffers");
 SYSCTL_LONG(_kern, OID_AUTO, maxswzone, CTLFLAG_RDTUN, &maxswzone, 0,
-    "max swmeta KVA storage");
+    "Maximum memory for swap metadata");
 SYSCTL_LONG(_kern, OID_AUTO, maxbcache, CTLFLAG_RDTUN, &maxbcache, 0,
-    "max buffer cache KVA storage");
+    "Maximum value of vfs.maxbufspace");
 SYSCTL_ULONG(_kern, OID_AUTO, maxtsiz, CTLFLAG_RDTUN, &maxtsiz, 0,
-    "max text size");
+    "Maximum text size");
 SYSCTL_ULONG(_kern, OID_AUTO, dfldsiz, CTLFLAG_RDTUN, &dfldsiz, 0,
-    "initial data size limit");
+    "Initial data size limit");
 SYSCTL_ULONG(_kern, OID_AUTO, maxdsiz, CTLFLAG_RDTUN, &maxdsiz, 0,
-    "max data size");
+    "Maximum data size");
 SYSCTL_ULONG(_kern, OID_AUTO, dflssiz, CTLFLAG_RDTUN, &dflssiz, 0,
-    "initial stack size limit");
+    "Initial stack size limit");
 SYSCTL_ULONG(_kern, OID_AUTO, maxssiz, CTLFLAG_RDTUN, &maxssiz, 0,
-    "max stack size");
+    "Maximum stack size");
 SYSCTL_ULONG(_kern, OID_AUTO, sgrowsiz, CTLFLAG_RDTUN, &sgrowsiz, 0,
-    "amount to grow stack");
+    "Amount to grow stack on a stack fault");
 SYSCTL_PROC(_kern, OID_AUTO, vm_guest, CTLFLAG_RD | CTLTYPE_STRING,
     NULL, 0, sysctl_kern_vm_guest, "A",
     "Virtual machine detected? (none|generic|xen)");
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c
index 7597a39ec5d7..0715e9125d18 100644
--- a/sys/kern/vfs_bio.c
+++ b/sys/kern/vfs_bio.c
@@ -125,10 +125,10 @@ static long bufspace;
 #if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \
     defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7)
 SYSCTL_PROC(_vfs, OID_AUTO, bufspace, CTLTYPE_LONG|CTLFLAG_MPSAFE|CTLFLAG_RD,
-    &bufspace, 0, sysctl_bufspace, "L", "KVA memory used for bufs");
+    &bufspace, 0, sysctl_bufspace, "L", "Virtual memory used for buffers");
 #else
 SYSCTL_LONG(_vfs, OID_AUTO, bufspace, CTLFLAG_RD, &bufspace, 0,
-    "KVA memory used for bufs");
+    "Virtual memory used for buffers");
 #endif
 static long maxbufspace;
 SYSCTL_LONG(_vfs, OID_AUTO, maxbufspace, CTLFLAG_RD, &maxbufspace, 0,