admin-guide/device-mapper/statistics.rst

6 regions of a DM device.	 If no regions are defined no statistics are
8 devices are currently supported.
14 The I/O statistics counters for each step-sized area of a region are
16 Documentation/admin-guide/iostats.rst).  But two extra counters (12 and 13) are
22 The reported times are in milliseconds and the granularity depends on
24 reported times are in nanoseconds.
65 	  The following optional arguments are supported:
70 		used, the resulting times are in nanoseconds instead of
71 		milliseconds.  Precise timestamps are a little bit slower
75 		numbers n1, n2, etc are times that represent the boundaries
77 		times are in milliseconds, otherwise they are in
122 	  are returned.
123 	  If it is not specified, all regions are returned.
129 	The strings "precise_timestamps" and "histogram" are printed only
140 	  If omitted, all lines are returned.
144 	  If omitted, all lines are returned.
184 	  If omitted, all lines are printed and then cleared.
188 	  If omitted, all lines are printed and then cleared.