More efficient lock/unlock operation in locking

Currently on concurrent locking we sleep(1) and retry until given retries reached.

(times for hosts example)
With sleep(1):
Total Delta: 19.2853975296
Total Time: 11.1652331352

With sleep(0.5):
Total Delta: 12.0467472076
Total Time: 6.78053498268

With sleep(0.1):
Total Delta: 5.13619017601
Total Time: 2.99174499512

With sleep(0.05):
Total Delta: 4.25722360611
Total Time: 2.56225085258

Also in more concurrent environment the difference would be even higher.

It's clearly visible that smarter locking wait is needed.