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<h1>Source code for apache_beam.tools.sideinput_microbenchmark</h1><div class="highlight"><pre>
<span></span><span class="c1"># Licensed to the Apache Software Foundation (ASF) under one or more</span>
<span class="c1"># contributor license agreements. See the NOTICE file distributed with</span>
<span class="c1"># this work for additional information regarding copyright ownership.</span>
<span class="c1"># The ASF licenses this file to You under the Apache License, Version 2.0</span>
<span class="c1"># (the &quot;License&quot;); you may not use this file except in compliance with</span>
<span class="c1"># the License. You may obtain a copy of the License at</span>
<span class="c1">#</span>
<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="c1">#</span>
<span class="c1"># Unless required by applicable law or agreed to in writing, software</span>
<span class="c1"># distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span>
<span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="c1"># See the License for the specific language governing permissions and</span>
<span class="c1"># limitations under the License.</span>
<span class="c1">#</span>
<span class="sd">&quot;&quot;&quot;A microbenchmark for measuring performance of Side Inputs iterable.</span>
<span class="sd">Runs side input iterable that fetches from multiple FakeSources, and</span>
<span class="sd">measures the time to fetch all elements from all sources.</span>
<span class="sd">Run as</span>
<span class="sd"> python -m apache_beam.tools.sideinput_microbenchmark</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">absolute_import</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">division</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">print_function</span>
<span class="kn">import</span> <span class="nn">time</span>
<span class="kn">from</span> <span class="nn">builtins</span> <span class="k">import</span> <span class="nb">range</span>
<span class="kn">from</span> <span class="nn">apache_beam.runners.worker</span> <span class="k">import</span> <span class="n">opcounters</span>
<span class="kn">from</span> <span class="nn">apache_beam.runners.worker</span> <span class="k">import</span> <span class="n">sideinputs</span>
<span class="kn">from</span> <span class="nn">apache_beam.runners.worker</span> <span class="k">import</span> <span class="n">statesampler</span>
<span class="kn">from</span> <span class="nn">apache_beam.runners.worker.sideinputs_test</span> <span class="k">import</span> <span class="n">FakeSource</span>
<span class="kn">from</span> <span class="nn">apache_beam.tools</span> <span class="k">import</span> <span class="n">utils</span>
<span class="kn">from</span> <span class="nn">apache_beam.utils.counters</span> <span class="k">import</span> <span class="n">CounterFactory</span>
<div class="viewcode-block" id="long_generator"><a class="viewcode-back" href="../../../apache_beam.tools.sideinput_microbenchmark.html#apache_beam.tools.sideinput_microbenchmark.long_generator">[docs]</a><span class="k">def</span> <span class="nf">long_generator</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">elements</span><span class="p">):</span>
<span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">elements</span><span class="p">):</span>
<span class="k">yield</span> <span class="n">value</span></div>
<div class="viewcode-block" id="run_benchmark"><a class="viewcode-back" href="../../../apache_beam.tools.sideinput_microbenchmark.html#apache_beam.tools.sideinput_microbenchmark.run_benchmark">[docs]</a><span class="k">def</span> <span class="nf">run_benchmark</span><span class="p">(</span><span class="n">num_runs</span><span class="o">=</span><span class="mi">50</span><span class="p">,</span> <span class="n">input_per_source</span><span class="o">=</span><span class="mi">4000</span><span class="p">,</span> <span class="n">num_sources</span><span class="o">=</span><span class="mi">4</span><span class="p">):</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Number of runs:&quot;</span><span class="p">,</span> <span class="n">num_runs</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Input size:&quot;</span><span class="p">,</span> <span class="n">num_sources</span> <span class="o">*</span> <span class="n">input_per_source</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Sources:&quot;</span><span class="p">,</span> <span class="n">num_sources</span><span class="p">)</span>
<span class="n">times</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">num_runs</span><span class="p">):</span>
<span class="n">counter_factory</span> <span class="o">=</span> <span class="n">CounterFactory</span><span class="p">()</span>
<span class="n">state_sampler</span> <span class="o">=</span> <span class="n">statesampler</span><span class="o">.</span><span class="n">StateSampler</span><span class="p">(</span><span class="s1">&#39;basic&#39;</span><span class="p">,</span> <span class="n">counter_factory</span><span class="p">)</span>
<span class="n">state_sampler</span><span class="o">.</span><span class="n">start</span><span class="p">()</span>
<span class="k">with</span> <span class="n">state_sampler</span><span class="o">.</span><span class="n">scoped_state</span><span class="p">(</span><span class="s1">&#39;step1&#39;</span><span class="p">,</span> <span class="s1">&#39;state&#39;</span><span class="p">):</span>
<span class="n">si_counter</span> <span class="o">=</span> <span class="n">opcounters</span><span class="o">.</span><span class="n">SideInputReadCounter</span><span class="p">(</span>
<span class="n">counter_factory</span><span class="p">,</span> <span class="n">state_sampler</span><span class="p">,</span> <span class="s1">&#39;step1&#39;</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">si_counter</span> <span class="o">=</span> <span class="n">opcounters</span><span class="o">.</span><span class="n">NoOpTransformIOCounter</span><span class="p">()</span>
<span class="n">sources</span> <span class="o">=</span> <span class="p">[</span>
<span class="n">FakeSource</span><span class="p">(</span><span class="n">long_generator</span><span class="p">(</span><span class="n">i</span><span class="p">,</span> <span class="n">input_per_source</span><span class="p">))</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">num_sources</span><span class="p">)]</span>
<span class="n">iterator_fn</span> <span class="o">=</span> <span class="n">sideinputs</span><span class="o">.</span><span class="n">get_iterator_fn_for_sources</span><span class="p">(</span>
<span class="n">sources</span><span class="p">,</span> <span class="n">read_counter</span><span class="o">=</span><span class="n">si_counter</span><span class="p">)</span>
<span class="n">start</span> <span class="o">=</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span>
<span class="nb">list</span><span class="p">(</span><span class="n">iterator_fn</span><span class="p">())</span>
<span class="n">time_cost</span> <span class="o">=</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span> <span class="o">-</span> <span class="n">start</span>
<span class="n">times</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">time_cost</span><span class="p">)</span>
<span class="n">state_sampler</span><span class="o">.</span><span class="n">stop</span><span class="p">()</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Runtimes:&quot;</span><span class="p">,</span> <span class="n">times</span><span class="p">)</span>
<span class="n">avg_runtime</span> <span class="o">=</span> <span class="nb">sum</span><span class="p">(</span><span class="n">times</span><span class="p">)</span> <span class="o">/</span> <span class="nb">len</span><span class="p">(</span><span class="n">times</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Average runtime:&quot;</span><span class="p">,</span> <span class="n">avg_runtime</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;Time per element:&quot;</span><span class="p">,</span> <span class="n">avg_runtime</span> <span class="o">/</span> <span class="p">(</span><span class="n">input_per_source</span> <span class="o">*</span>
<span class="n">num_sources</span><span class="p">))</span></div>
<span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s1">&#39;__main__&#39;</span><span class="p">:</span>
<span class="n">utils</span><span class="o">.</span><span class="n">check_compiled</span><span class="p">(</span>
<span class="s1">&#39;apache_beam.runners.worker.opcounters&#39;</span><span class="p">)</span>
<span class="n">run_benchmark</span><span class="p">()</span>
</pre></div>
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