Represents the number of free inodes. Ie. The number of inuse inodes is
(nr_inodes - nr_free_inodes).
-super-nr and super-max
-----------------------
-
-Again, super block structures are allocated by the kernel, but not freed. The
-file super-max contains the maximum number of super block handlers, where
-super-nr shows the number of currently allocated ones.
-
-Every mounted file system needs a super block, so if you plan to mount lots of
-file systems, you may want to increase these numbers.
-
aio-nr and aio-max-nr
---------------------
In the interface directories you'll find the following entries:
-base_reachable_time
--------------------
+base_reachable_time, base_reachable_time_ms
+-------------------------------------------
A base value used for computing the random reachable time value as specified
in RFC2461.
-retrans_time
-------------
+Expression of base_reachable_time, which is deprecated, is in seconds.
+Expression of base_reachable_time_ms is in milliseconds.
+
+retrans_time, retrans_time_ms
+-----------------------------
+
+The time between retransmitted Neighbor Solicitation messages.
+Used for address resolution and to determine if a neighbor is
+unreachable.
-The time, expressed in jiffies (1/100 sec), between retransmitted Neighbor
-Solicitation messages. Used for address resolution and to determine if a
-neighbor is unreachable.
+Expression of retrans_time, which is deprecated, is in 1/100 seconds (for
+IPv4) or in jiffies (for IPv6).
+Expression of retrans_time_ms is in milliseconds.
unres_qlen
----------