1# Copyright 2020 The TensorFlow Authors. All Rights Reserved. 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14# ============================================================================== 15"""Benchmarks for `tf.data.Dataset.prefetch()`.""" 16from tensorflow.python.data.benchmarks import benchmark_base 17from tensorflow.python.data.ops import dataset_ops 18 19 20class PrefetchBenchmark(benchmark_base.DatasetBenchmarkBase): 21 """Benchmarks for `tf.data.Dataset.prefetch()`.""" 22 23 def benchmark_prefetch(self): 24 num_elements = 1000000 25 for prefetch_buffer in [1, 5, 10, 20, 100]: 26 dataset = dataset_ops.Dataset.range(num_elements) 27 dataset = dataset.prefetch(prefetch_buffer) 28 29 self.run_and_report_benchmark( 30 dataset, 31 num_elements=num_elements, 32 extras={ 33 "model_name": "prefetch.benchmark.1", 34 "parameters": "%d" % prefetch_buffer, 35 }, 36 name="prefetch_{}".format(prefetch_buffer)) 37 38 39if __name__ == "__main__": 40 benchmark_base.test.main() 41