Thank you! I will try this php api.
can you say me in what unit these data? These are the data of the api of rrddata:
array (
'diskread' => 866.13333333333298,
'netin' => 595.68253009259297,
'disk' => 0,
'cpu' => 0.054978348011310497,
'time' => 1473465600,
'netout' =>...