def __init__(self, logger):
self.logger = logger
self.trackers = dict()
self.interval = settings['perf_ticker_interval']
self.mark_24_hours = time.time()
self.mark_footprint = time.time()
self.footprint = FootprintCalculator()
self.timer = RepeatTimer(self.interval,
self._run_tick_thread,
daemonic=True)
