CPU usage about cpppo HOT 3 OPEN

import cpppo
import threading
from cpppo.server.enip import poll
from cpppo.server.enip.get_attribute import proxy as device # ControlLogix
import time
params = ["AI_XAxis[0].Status.rActualPosition","AI_YAxis[0].Status.rActualPosition","AI_ZAxis[0].Status.rActualPosition",
                    "AI_XAxis[1].Status.rActualPosition","AI_YAxis[1].Status.rActualPosition","AI_ZAxis[1].Status.rActualPosition"]

def failure( exc ):
    failure.string.append( str(exc) )
failure.string		= [] # [ <exc>, ... ]

def process( par, val ):
    process.values[par]	= val
process.done		= False
process.values		= {} # { <parameter>: <value>, ... }

poller			= threading.Thread(
    target=poll.poll, kwargs={
        'proxy_class':  device,
        'address':      ("192.168.60.30", 44818),
        'cycle':        0.1,
        'timeout':      0.5,
        'process':      process,
        'failure':      failure,
        'params':       params,
        'pass_thru':    True
    })
poller.start()
try:
    while True:
        while process.values:
            print("X: ", process.values.pop("AI_XAxis[0].Status.rActualPosition", "???"))
            print("Y: ", process.values.pop("AI_YAxis[0].Status.rActualPosition", "???"))
            print("Z: ", process.values.pop("AI_ZAxis[0].Status.rActualPosition", "???"))
            print("X2: ", process.values.pop("AI_XAxis[1].Status.rActualPosition", "???"))
            print("Y2: ", process.values.pop("AI_YAxis[1].Status.rActualPosition", "???"))
            print("Z2: ", process.values.pop("AI_ZAxis[1].Status.rActualPosition", "???"))
            #par,val		= process.values.popitem()
            #print( "%s: %16s == %r" % ( time.ctime(), par, val ))
        while failure.string:
            exc		= failure.string.pop( 0 )
            print( "%s: %s" %( time.ctime(), exc ))
        time.sleep( 0.1 )
finally:
    process.done		= True
    poller.join()