code: def fake_json_data():
      return {
          "words": """
              Lorem ipsum dolor sit amet, consectetur adipiscing
              elit. Mauris adipiscing adipiscing placerat.
              Vestibulum augue augue,
              pellentesque quis sollicitudin id, adipiscing.
              """
          * 100,
          "list": list(range(100)) * 500,
          "dict": {str(i): "a" for i in range(50000)},
          "dict2": {i: "a" for i in range(50000)},
          "int": 3000,
          "float": 100.123456,
      }
  
file_path: tensorpack/tests/benchmark-serializer.py
imports: import numpy
  import argparse
  import pyarrow
  from tabulate import tabulate
  import operator
  from tensorpack.utils import logger
  from tensorpack.utils.serialize import MsgpackSerializer, PyarrowSerializer, PickleSerializer, ForkingPickler
  from tensorpack.utils.timer import Timer
label_desc: Use image node_id 4 for calling a global function with example usage: fake_json_data() and returns: dict