class_docstr: An obscure object encompassing timing results recorded by
  :func:`~cupyx.profiler.benchmark`. Simple statistics can be obtained by
  converting an instance of this class to a string.
  
  .. warning::
      This API is currently experimental and subject to change in future
      releases.
code: def __init__(self, name, ts, devices):
      assert ts.ndim == 2
      assert ts.shape[0] == len(devices) + 1
      assert ts.shape[1] > 0
      self.name = name
      self._ts = ts
      self._devices = devices
  
file_path: cupy/cupyx/profiler/_time.py
imports: import math
  import time
  import numpy
  import cupy
  from cupy_backends.cuda.api import runtime
label_desc: Use image node_id 1 to create a new _PerfCaseResult object  with example: obj = _PerfCaseResult(name, ts, devices)