code: def dump_perf_data(self, signal, estimator):
      logger = tsutil.get_pyaf_logger()
      df = pd.DataFrame()
      df["sig"] = signal.values
      df["est"] = estimator.values
      logger.debug(str(df.head()))
      logger.debug(str(df.tail()))
  
file_path: atspy/atspy/TS/Perf.py
imports: import pandas
  import numpy
  from .None import Utils
label_desc: Use image node_id 5 for calling the cPerf obj's underlying member method code with example usage: obj.dump_perf_data(signal, estimator) without return types