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| <div class="section" id="module-apache_beam.tools.teststream_microbenchmark"> |
| <span id="apache-beam-tools-teststream-microbenchmark-module"></span><h1>apache_beam.tools.teststream_microbenchmark module<a class="headerlink" href="#module-apache_beam.tools.teststream_microbenchmark" title="Permalink to this headline">¶</a></h1> |
| <p>A microbenchmark for measuring changes in the performance of TestStream |
| running locally. |
| This microbenchmark attempts to measure the overhead of the main data paths |
| for the TestStream. Specifically new elements, watermark changes and processing |
| time advances.</p> |
| <p>This runs a series of N parallel pipelines with M parallel stages each. Each |
| stage does the following:</p> |
| <ol class="arabic simple"> |
| <li>Put all the PCollection elements in a window</li> |
| <li>Wait until the watermark advances past the end of the window.</li> |
| <li>When the watermark passes, change the key and output all the elements</li> |
| <li>Go back to #1 until all elements in the stream have been consumed.</li> |
| </ol> |
| <p>This executes the same codepaths that are run on the Fn API (and Dataflow) |
| workers, but is generally easier to run (locally) and more stable.</p> |
| <p>Run as</p> |
| <blockquote> |
| <div>python -m apache_beam.tools.teststream_microbenchmark</div></blockquote> |
| <dl class="class"> |
| <dt id="apache_beam.tools.teststream_microbenchmark.RekeyElements"> |
| <em class="property">class </em><code class="descclassname">apache_beam.tools.teststream_microbenchmark.</code><code class="descname">RekeyElements</code><span class="sig-paren">(</span><em>*unused_args</em>, <em>**unused_kwargs</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/tools/teststream_microbenchmark.html#RekeyElements"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.tools.teststream_microbenchmark.RekeyElements" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <a class="reference internal" href="apache_beam.transforms.core.html#apache_beam.transforms.core.DoFn" title="apache_beam.transforms.core.DoFn"><code class="xref py py-class docutils literal notranslate"><span class="pre">apache_beam.transforms.core.DoFn</span></code></a></p> |
| <dl class="method"> |
| <dt id="apache_beam.tools.teststream_microbenchmark.RekeyElements.process"> |
| <code class="descname">process</code><span class="sig-paren">(</span><em>element</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/tools/teststream_microbenchmark.html#RekeyElements.process"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.tools.teststream_microbenchmark.RekeyElements.process" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| </dd></dl> |
| |
| <dl class="function"> |
| <dt id="apache_beam.tools.teststream_microbenchmark.run_single_pipeline"> |
| <code class="descclassname">apache_beam.tools.teststream_microbenchmark.</code><code class="descname">run_single_pipeline</code><span class="sig-paren">(</span><em>size</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/tools/teststream_microbenchmark.html#run_single_pipeline"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.tools.teststream_microbenchmark.run_single_pipeline" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="function"> |
| <dt id="apache_beam.tools.teststream_microbenchmark.run_benchmark"> |
| <code class="descclassname">apache_beam.tools.teststream_microbenchmark.</code><code class="descname">run_benchmark</code><span class="sig-paren">(</span><em>starting_point=1</em>, <em>num_runs=10</em>, <em>num_elements_step=300</em>, <em>verbose=True</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/tools/teststream_microbenchmark.html#run_benchmark"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.tools.teststream_microbenchmark.run_benchmark" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
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