time.perf_counter()

import time
def procedure():
   time.sleep(2.5)

# measure process time
t0 = time.perf_counter()
procedure()
print (time.perf_counter() - t0, "seconds process time")

# measure wall time
t0 = time.time()
procedure()
print (time.time() - t0, "seconds wall time")

2.500478400001157 seconds process time
2.5105583667755127 seconds wall time