Measure execution time of the callback function.
Measure execution time of the callback function.

Currently it is around 2 milliseconds.

nianxing/oru_walk_module,nianxing/oru_walk_module,shehzi001/oru_walk_module,asherikov/oru_walk_module,asherikov/oru_walk_module,asherikov/oru_walk_module,shehzi001/oru_walk_module,shehzi001/oru_walk_module,nianxing/oru_walk_module,asherikov/oru_walk_module,nianxing/oru_walk_module,shehzi001/oru_walk_module