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<title>Benchmarking — CodeIgniter 4.1.1 documentation</title>
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<li class="toctree-l1"><a class="reference internal" href="../intro/index.html">Welcome to CodeIgniter4</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../concepts/index.html">CodeIgniter4 Overview</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../concepts/http.html">Working With HTTP Requests</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../concepts/security.html">Security Guidelines</a></li>
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</ul>
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<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../general/configuration.html">Configuration</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helper Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Global Functions and Constants</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/logging.html">Logging Information</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Web Page Caching</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/ajax.html">AJAX Requests</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/modules.html">Code Modules</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../incoming/index.html">Controllers and Routing</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/controllers.html">Controllers</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/routing.html">URI Routing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/filters.html">Controller Filters</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/message.html">HTTP Messages</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/request.html">Request Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/incomingrequest.html">IncomingRequest Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/content_negotiation.html">Content Negotiation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/methodspoofing.html">HTTP Method Spoofing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/restful.html">RESTful Resource Handling</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../outgoing/index.html">Building Responses</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/views.html">Views</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/view_cells.html">View Cells</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/view_renderer.html">View Renderer</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/view_layouts.html">View Layouts</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/view_parser.html">View Parser</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/table.html">HTML Table Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/response.html">HTTP Responses</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/api_responses.html">API Response Trait</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/localization.html">Localization</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Working With Databases</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/events.html">Database Events</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../models/index.html">Modeling Data</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../models/model.html">Using CodeIgniter's Model</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../models/entities.html">Using Entity Classes</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../dbmgmt/index.html">Managing Databases</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../dbmgmt/forge.html">Database Manipulation with Database Forge</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dbmgmt/migration.html">Database Migrations</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dbmgmt/seeds.html">Database Seeding</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Library Reference</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/cookies.html">Cookies</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/curlrequest.html">CURLRequest Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Service</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/files.html">Working with Files</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/honeypot.html">Honeypot Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/images.html">Image Manipulation Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/throttler.html">Throttler</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/time.html">Times and Dates</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/uploaded_files.html">Working with Uploaded Files</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">Working with URIs</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/validation.html">Validation</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/filesystem_helper.html">Filesystem Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/test_helper.html">Test Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
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</ul>
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</li>
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</ul>
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<ul class="current">
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<li class="toctree-l1 current"><a class="reference internal" href="index.html">Testing</a><ul class="current">
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<li class="toctree-l2"><a class="reference internal" href="overview.html">Getting Started</a></li>
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<li class="toctree-l2"><a class="reference internal" href="database.html">Database</a></li>
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<li class="toctree-l2"><a class="reference internal" href="fabricator.html">Generating Data</a></li>
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<li class="toctree-l2"><a class="reference internal" href="controllers.html">Controller Testing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="feature.html">HTTP Testing</a></li>
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<li class="toctree-l2 current"><a class="current reference internal" href="#">Benchmarking</a></li>
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<li class="toctree-l2"><a class="reference internal" href="debugging.html">Debugging Your Application</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../cli/index.html">Command Line Usage</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli.html">Running via the Command Line</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli_commands.html">Custom CLI Commands</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli_generators.html">CLI Generators</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli_library.html">CLI Library</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli_request.html">CLIRequest Class</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../extending/index.html">Extending CodeIgniter</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../extending/core_classes.html">Creating Core System Classes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/common.html">Replacing Common Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/events.html">Events</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/basecontroller.html">Extending the Controller</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/authentication.html">Authentication</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/contributing.html">Contributing to CodeIgniter</a></li>
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</ul>
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</li>
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</ul>
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</div>
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<li><a href="../index.html" class="icon icon-home"></a> »</li>
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<li><a href="index.html">Testing</a> »</li>
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<li>Benchmarking</li>
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<li class="wy-breadcrumbs-aside">
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</li>
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</ul>
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|
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<hr/>
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</div>
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
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<div itemprop="articleBody">
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|
||
<div class="section" id="benchmarking">
|
||
<h1>Benchmarking<a class="headerlink" href="#benchmarking" title="Permalink to this headline">¶</a></h1>
|
||
<p>CodeIgniter provides two separate tools to help you benchmark your code and test different options:
|
||
the Timer and the Iterator. The Timer allows you to easily calculate the time between two points in the
|
||
execution of your script. The Iterator allows you to set up several variations and runs those tests, recording
|
||
performance and memory statistics to help you decide which version is the best.</p>
|
||
<p>The Timer class is always active, being started from the moment the framework is invoked until right before
|
||
sending the output to the user, enabling a very accurate timing of the entire system execution.</p>
|
||
<div class="contents local topic" id="contents">
|
||
<ul class="simple">
|
||
<li><p><a class="reference internal" href="#using-the-timer" id="id1">Using the Timer</a></p>
|
||
<ul>
|
||
<li><p><a class="reference internal" href="#viewing-your-benchmark-points" id="id2">Viewing Your Benchmark Points</a></p></li>
|
||
<li><p><a class="reference internal" href="#displaying-execution-time" id="id3">Displaying Execution Time</a></p></li>
|
||
</ul>
|
||
</li>
|
||
<li><p><a class="reference internal" href="#using-the-iterator" id="id4">Using the Iterator</a></p>
|
||
<ul>
|
||
<li><p><a class="reference internal" href="#creating-tasks-to-run" id="id5">Creating Tasks To Run</a></p></li>
|
||
<li><p><a class="reference internal" href="#running-the-tasks" id="id6">Running the Tasks</a></p></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="using-the-timer">
|
||
<h2><a class="toc-backref" href="#id1">Using the Timer</a><a class="headerlink" href="#using-the-timer" title="Permalink to this headline">¶</a></h2>
|
||
<p>With the Timer, you can measure the time between two moments in the execution of your application. This makes
|
||
it simple to measure the performance of different aspects of your application. All measurement is done using
|
||
the <code class="docutils literal notranslate"><span class="pre">start()</span></code> and <code class="docutils literal notranslate"><span class="pre">stop()</span></code> methods.</p>
|
||
<p>The <code class="docutils literal notranslate"><span class="pre">start()</span></code> methods takes a single parameter: the name of this timer. You can use any string as the name
|
||
of the timer. It is only used for you to reference later to know which measurement is which:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$benchmark</span> <span class="o">=</span> <span class="nx">\Config\Services</span><span class="o">::</span><span class="na">timer</span><span class="p">();</span>
|
||
<span class="nv">$benchmark</span><span class="o">-></span><span class="na">start</span><span class="p">(</span><span class="s1">'render view'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The <code class="docutils literal notranslate"><span class="pre">stop()</span></code> method takes the name of the timer that you want to stop as the only parameter, also:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$benchmark</span><span class="o">-></span><span class="na">stop</span><span class="p">(</span><span class="s1">'render view'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The name is not case-sensitive, but otherwise must match the name you gave it when you started the timer.</p>
|
||
<p>Alternatively, you can use the <a class="reference internal" href="../general/common_functions.html"><span class="doc">global function</span></a> <code class="docutils literal notranslate"><span class="pre">timer()</span></code> to start
|
||
and stop timers:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="c1">// Start the timer</span>
|
||
<span class="nx">timer</span><span class="p">(</span><span class="s1">'render view'</span><span class="p">);</span>
|
||
<span class="c1">// Stop a running timer,</span>
|
||
<span class="c1">// if one of this name has been started</span>
|
||
<span class="nx">timer</span><span class="p">(</span><span class="s1">'render view'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="section" id="viewing-your-benchmark-points">
|
||
<h3><a class="toc-backref" href="#id2">Viewing Your Benchmark Points</a><a class="headerlink" href="#viewing-your-benchmark-points" title="Permalink to this headline">¶</a></h3>
|
||
<p>When your application runs, all of the timers that you have set are collected by the Timer class. It does
|
||
not automatically display them, though. You can retrieve all of your timers by calling the <code class="docutils literal notranslate"><span class="pre">getTimers()</span></code> method.
|
||
This returns an array of benchmark information, including start, end, and duration:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$timers</span> <span class="o">=</span> <span class="nv">$benchmark</span><span class="o">-></span><span class="na">getTimers</span><span class="p">();</span>
|
||
|
||
<span class="c1">// Timers =</span>
|
||
<span class="p">[</span>
|
||
<span class="s1">'render view'</span> <span class="o">=></span> <span class="p">[</span>
|
||
<span class="s1">'start'</span> <span class="o">=></span> <span class="mi">1234567890</span><span class="p">,</span>
|
||
<span class="s1">'end'</span> <span class="o">=></span> <span class="mi">1345678920</span><span class="p">,</span>
|
||
<span class="s1">'duration'</span> <span class="o">=></span> <span class="mf">15.4315</span> <span class="c1">// number of seconds</span>
|
||
<span class="p">]</span>
|
||
<span class="p">]</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You can change the precision of the calculated duration by passing in the number of decimal places you want to be shown as
|
||
the only parameter. The default value is 4 numbers behind the decimal point:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$timers</span> <span class="o">=</span> <span class="nv">$benchmark</span><span class="o">-></span><span class="na">getTimers</span><span class="p">(</span><span class="mi">6</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The timers are automatically displayed in the <a class="reference internal" href="debugging.html"><span class="doc">Debub Toolbar</span></a>.</p>
|
||
</div>
|
||
<div class="section" id="displaying-execution-time">
|
||
<h3><a class="toc-backref" href="#id3">Displaying Execution Time</a><a class="headerlink" href="#displaying-execution-time" title="Permalink to this headline">¶</a></h3>
|
||
<p>While the <code class="docutils literal notranslate"><span class="pre">getTimers()</span></code> method will give you the raw data for all of the timers in your project, you can retrieve
|
||
the duration of a single timer, in seconds, with the <cite>getElapsedTime()</cite> method. The first parameter is the name of
|
||
the timer to display. The second is the number of decimal places to display. This defaults to 4:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nx">timer</span><span class="p">()</span><span class="o">-></span><span class="na">getElapsedTime</span><span class="p">(</span><span class="s1">'render view'</span><span class="p">);</span>
|
||
<span class="c1">// Displays: 0.0234</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="using-the-iterator">
|
||
<h2><a class="toc-backref" href="#id4">Using the Iterator</a><a class="headerlink" href="#using-the-iterator" title="Permalink to this headline">¶</a></h2>
|
||
<p>The Iterator is a simple tool that is designed to allow you to try out multiple variations on a solution to
|
||
see the speed differences and different memory usage patterns. You can add any number of “tasks” for it to
|
||
run and the class will run the task hundreds or thousands of times to get a clearer picture of performance.
|
||
The results can then be retrieved and used by your script, or displayed as an HTML table.</p>
|
||
<div class="section" id="creating-tasks-to-run">
|
||
<h3><a class="toc-backref" href="#id5">Creating Tasks To Run</a><a class="headerlink" href="#creating-tasks-to-run" title="Permalink to this headline">¶</a></h3>
|
||
<p>Tasks are defined within Closures. Any output the task creates will be discarded automatically. They are
|
||
added to the Iterator class through the <cite>add()</cite> method. The first parameter is a name you want to refer to
|
||
this test by. The second parameter is the Closure, itself:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$iterator</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">\CodeIgniter\Benchmark\Iterator</span><span class="p">();</span>
|
||
|
||
<span class="c1">// Add a new task</span>
|
||
<span class="nv">$iterator</span><span class="o">-></span><span class="na">add</span><span class="p">(</span><span class="s1">'single_concat'</span><span class="p">,</span> <span class="k">function</span><span class="p">()</span>
|
||
<span class="p">{</span>
|
||
<span class="nv">$str</span> <span class="o">=</span> <span class="s1">'Some basic'</span><span class="o">.</span><span class="s1">'little'</span><span class="o">.</span><span class="s1">'string concatenation test.'</span><span class="p">;</span>
|
||
<span class="p">}</span>
|
||
<span class="p">);</span>
|
||
|
||
<span class="c1">// Add another task</span>
|
||
<span class="nv">$iterator</span><span class="o">-></span><span class="na">add</span><span class="p">(</span><span class="s1">'double'</span><span class="p">,</span> <span class="k">function</span><span class="p">(</span><span class="nv">$a</span><span class="o">=</span><span class="s1">'little'</span><span class="p">)</span>
|
||
<span class="p">{</span>
|
||
<span class="nv">$str</span> <span class="o">=</span> <span class="s2">"Some basic </span><span class="si">{</span><span class="nv">$little</span><span class="si">}</span><span class="s2"> string test."</span><span class="p">;</span>
|
||
<span class="p">}</span>
|
||
<span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="running-the-tasks">
|
||
<h3><a class="toc-backref" href="#id6">Running the Tasks</a><a class="headerlink" href="#running-the-tasks" title="Permalink to this headline">¶</a></h3>
|
||
<p>Once you’ve added the tasks to run, you can use the <code class="docutils literal notranslate"><span class="pre">run()</span></code> method to loop over the tasks many times.
|
||
By default, it will run each task 1000 times. This is probably sufficient for most simple tests. If you need
|
||
to run the tests more times than that, you can pass the number as the first parameter:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="c1">// Run the tests 3000 times.</span>
|
||
<span class="nv">$iterator</span><span class="o">-></span><span class="na">run</span><span class="p">(</span><span class="mi">3000</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Once it has run, it will return an HTML table with the results of the test. If you don’t want the results
|
||
displayed, you can pass in <cite>false</cite> as the second parameter:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="c1">// Don't display the results.</span>
|
||
<span class="nv">$iterator</span><span class="o">-></span><span class="na">run</span><span class="p">(</span><span class="mi">1000</span><span class="p">,</span> <span class="k">false</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
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</div>
|
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© Copyright 2019-2021 CodeIgniter Foundation.
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Last updated on Feb 22, 2021.
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