Perform a selftest. This mode performs a sanity check of ``stats`` module.
+Descriptions of fields
+======================
+
+.. describe:: chit
+
+ cap hit rate
+
+.. describe:: rlat
+
+ read latency
+
+.. describe:: wlat
+
+ write latency
+
+.. describe:: mlat
+
+ metadata latency
+
+.. describe:: dlease
+
+ dentry lease rate
+
+.. describe:: ofiles
+
+ number of opened files
+
+.. describe:: oicaps
+
+ number of pinned caps
+
+.. describe:: oinodes
+
+ number of opened inodes
+
+
Availability
============