message: [tf.data] Fix autotune benchmark.
diff: @@ -41,9 +41,9 @@ class AutotuneBenchmark(benchmark_base.DatasetBenchmarkBase):
  if autotune_buffers else "parallelism_only")
  wall_time = self.run_and_report_benchmark(
  dataset=dataset,
  - num_elements=1,
  + num_elements=benchmark_iters,
  warmup=True,
  - iters=benchmark_iters,
  + iters=1,
  name=benchmark_label + (autotune_string if autotune else ""))
  return wall_time
  