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| <div class="section"> |
| <h1 id="hints"> |
| 22. Hints and Tips<a class="sectionlink" href="#hints" title="Link to here">¶</a> |
| </h1> |
| |
| <p> |
| This section is a collection of various hints and tips that have been suggested by various questions on the JMeter User list. |
| If you don't find what you are looking for here, please check the <a href="https://cwiki.apache.org/confluence/display/JMETER/Home">JMeter Wiki</a>. |
| Also, try search the JMeter User list; someone may well have already provided a solution. |
| |
| </p> |
| |
| <div class="subsection"> |
| <h2 id="variable_and_threads"> |
| 22.1 Passing variables between threads<a class="sectionlink" href="#variable_and_threads" title="Link to here">¶</a> |
| </h2> |
| |
| <p> |
| JMeter variables have thread scope. This is deliberate, so that threads can act independently. |
| However sometimes there is a need to pass variables between different threads, in the same or different Thread Groups. |
| </p> |
| |
| <p> |
| One way to do this is to use a property instead. |
| Properties are shared between all JMeter threads, so if one thread <a href="functions.html#__setProperty">sets a property</a>, |
| another thread can <a href="functions.html#__P">read</a> the updated value. |
| |
| </p> |
| |
| <p> |
| If there is a lot of information that needs to be passed between threads, then consider using a file. |
| For example you could use the <a href="component_reference.html#Save_Responses_to_a_file">Save Responses to a file</a> |
| listener or perhaps a BeanShell PostProcessor in one thread, and read the file using the HTTP Sampler "<span class="code">file:</span>" protocol, |
| and extract the information using a PostProcessor or BeanShell element. |
| |
| </p> |
| |
| <p> |
| If you can derive the data before starting the test, then it may well be better to store it in a file, |
| read it using CSV Dataset. |
| </p> |
| |
| </div> |
| |
| <div class="subsection"> |
| <h2 id="debug_logging"> |
| 22.2 Enabling Debug logging<a class="sectionlink" href="#debug_logging" title="Link to here">¶</a> |
| </h2> |
| |
| <p> |
| Most test elements include debug logging. If running a test plan from the GUI, |
| select the test element and use the Help Menu to enable or disable logging. |
| The Help Menu also has an option to display the GUI and test element class names. |
| You can use these to determine the correct property setting to change the logging level. |
| </p> |
| |
| <p> |
| It is sometimes very useful to see Log messages to debug dynamic scripting languages like BeanShell or |
| Apache Groovy used in JMeter. |
| You can view log messages directly in JMeter GUI, to do so:</p> |
| |
| <ul> |
| |
| <li> |
| use menu <span class="menuchoice"><span class="guimenuitem">Options</span> → <span class="guimenuitem">Log Viewer</span></span>, |
| a log console will appear at the bottom of the interface |
| </li> |
| |
| <li>Or click on the Warning icon in the upper right corner of GUI</li> |
| |
| </ul> |
| By default this log console is disabled, you can enable it by changing in <span class="code">jmeter.properties</span>: |
| |
| <pre class="source">jmeter.loggerpanel.display=true</pre> |
| To avoid using too much memory, this components limits the number of characters used by this panel: |
| |
| |
| <pre class="source">jmeter.loggerpanel.maxlength=80000</pre> |
| |
| </div> |
| |
| <div class="subsection"> |
| <h2 id="searching"> |
| 22.3 Searching<a class="sectionlink" href="#searching" title="Link to here">¶</a> |
| </h2> |
| |
| <p> |
| It is sometimes hard to find in a Test Plan tree and elements using a variable or containing a certain URL or parameter. |
| A new feature is now available since 2.6, you can access it in Menu Search. |
| It provides search with following options: |
| </p> |
| |
| <dl> |
| |
| <dt> |
| <span class="code">Case sensitive</span> |
| </dt> |
| <dd>Makes search case sensitive</dd> |
| |
| <dt> |
| <span class="code">Regular exp.</span> |
| </dt> |
| <dd> |
| Is text to search a regexp, if so Regexp will be searched in Tree of components, example "<span class="code">\btest\b</span>" |
| will match any component that contains test in searchable elements of the component |
| </dd> |
| |
| </dl> |
| |
| <figure> |
| <a href="../images/screenshots/searching/raw-search.png"><img src="../images/screenshots/searching/raw-search.png" width="768" height="339" alt="Figure 1 - Search raw text in TreeView"></a> |
| <figcaption>Figure 1 - Search raw text in TreeView</figcaption> |
| </figure> |
| |
| <figure> |
| <a href="../images/screenshots/searching/raw-search-result.png"><img src="../images/screenshots/searching/raw-search-result.png" width="767" height="316" alt="Figure 2 - Result in TreeView"></a> |
| <figcaption>Figure 2 - Result in TreeView</figcaption> |
| </figure> |
| |
| <figure> |
| <a href="../images/screenshots/searching/regexp-search.png"><img src="../images/screenshots/searching/regexp-search.png" width="772" height="319" alt="Figure 3 - Search Regexp in TreeView (in this example we search whole word)"></a> |
| <figcaption>Figure 3 - Search Regexp in TreeView (in this example we search whole word)</figcaption> |
| </figure> |
| |
| <figure> |
| <a href="../images/screenshots/searching/regexp-search-result.png"><img src="../images/screenshots/searching/regexp-search-result.png" width="771" height="302" alt="Figure 4 - Result in TreeView"></a> |
| <figcaption>Figure 4 - Result in TreeView</figcaption> |
| </figure> |
| |
| </div> |
| |
| <div class="subsection"> |
| <h2 id="hidpi"> |
| 22.4 JMeter and a HiDPI screen<a class="sectionlink" href="#hidpi" title="Link to here">¶</a> |
| </h2> |
| |
| <div class="description"> |
| |
| <p> |
| With <b>Java version 9 and up</b>, the HiDPI (High Dot Per Inch) screens are supported. |
| |
| </p> |
| |
| <p> |
| You can define the Java property <b>sun.java2d.uiScale</b> to change the scale of JMeter. |
| The value can be an integer or percentage value. |
| |
| </p> |
| |
| <p>For example, on Linux, with x2 factor (200%):</p> |
| |
| <pre class="source"> |
| $ export JVM_ARGS="-Dsun.java2d.uiScale=200%" |
| $ ./bin/jmeter</pre> |
| |
| <p> |
| With <b>Java version 8</b>, the HiDPI (High Dot Per Inch) screens aren't supported in the Swing API. |
| You can improve the JMeter's display on HiDPI screen by changing some properties: |
| </p> |
| |
| <dl> |
| |
| <dt> |
| <span class="code">jmeter.hidpi.mode</span> |
| </dt> |
| |
| <dd> |
| set to <span class="code">true</span> to activate a '<em>pseudo</em>'-hidpi mode allowing to increase size of some UI elements |
| </dd> |
| |
| <dt> |
| <span class="code">jmeter.hidpi.scale.factor</span> |
| </dt> |
| |
| <dd> |
| set to <span class="code">2.0</span> to scale the size of some UI elements |
| </dd> |
| |
| <dt> |
| <span class="code">jmeter.toolbar.icons.size</span> |
| </dt> |
| |
| <dd> |
| with these values: <span class="code">22x22</span> (default size), <span class="code">32x32</span> or <span class="code">48x48</span> (Suggested value for HiDPI) |
| </dd> |
| |
| <dt> |
| <span class="code">jmeter.tree.icons.size</span> |
| </dt> |
| |
| <dd> |
| with these values: <span class="code">19x19</span> (default size), <span class="code">24x24</span>, <span class="code">32x32</span> (Suggested value for HiDPI) or <span class="code">48x48</span> |
| </dd> |
| |
| </dl> |
| |
| <p>Additionally you can increase the font size of the text areas in some elements like JSR223 sampler by changing theses properties:</p> |
| |
| <dl> |
| |
| <dt> |
| <span class="code">jsyntaxtextarea.font.family</span> |
| </dt> |
| |
| <dd> |
| set to <span class="code">Hack</span> to activate and to change the font and their size |
| </dd> |
| |
| <dt> |
| <span class="code">jsyntaxtextarea.font.size</span> |
| </dt> |
| |
| <dd> |
| set to a greater value, like <span class="code">28</span> (Suggested value for HiDPI) |
| </dd> |
| |
| </dl> |
| |
| <div class="clear"></div> |
| <div class="note"> |
| This is not a full HiDPI support and only affects |
| |
| <ul> |
| |
| <li>JMeter tree nodes</li> |
| |
| <li>Icons in the toolbar</li> |
| |
| <li>Tables content</li> |
| |
| <li>Font size into text areas</li> |
| |
| </ul> |
| |
| </div> |
| <div class="clear"></div> |
| |
| </div> |
| |
| </div> |
| |
| <div class="subsection"> |
| <h2 id="autosave"> |
| 22.5 Autosave process configuration<a class="sectionlink" href="#autosave" title="Link to here">¶</a> |
| </h2> |
| |
| <div class="description"> |
| |
| <p> |
| Since JMeter 3.0, JMeter automatically saves up to ten backups of every saved jmx files. When enabled, just before the jmx file is saved, |
| it will be backed up to the <span class="code">${JMETER_HOME}/backups</span> subfolder. Backup files are named after the saved jmx file and assigned a |
| version number that is automatically incremented, ex: <span class="code">test-plan-000001.jmx</span>, <span class="code">test-plan-000002.jmx</span>, <span class="code">test-plan-000003.jmx</span>, etc. |
| To control auto-backup, add the following properties to <span class="code">user.properties</span>. |
| </p> |
| |
| <dl> |
| |
| <dt> |
| <span class="code">backup_on_save</span> |
| </dt> |
| |
| <dd> |
| To enable/disable auto-backup, set the following property to <span class="code">true</span>/<span class="code">false</span> (default is <span class="code">true</span>): |
| |
| <pre class="source">jmeter.gui.action.save.backup_on_save=false</pre> |
| |
| </dd> |
| |
| <dt> |
| <span class="code">backup_directory</span> |
| </dt> |
| |
| <dd> |
| The backup directory can also be set to a different location. Setting the <span class="code">jmeter.gui.action.save.backup_directory</span> property |
| to the path of the desired directory |
| will cause backup files to be stored inside instead of the <span class="code">${JMETER_HOME}/backups</span> folder. If the specified directory does not exist |
| it will be created. Leaving this property unset will cause the <span class="code">${JMETER_HOME}/backups</span> folder to be used. |
| |
| <pre class="source">jmeter.gui.action.save.backup_directory=/path/to/backups/dir</pre> |
| |
| </dd> |
| |
| <dt> |
| <span class="code">keep_backup_max_hours</span> |
| </dt> |
| |
| <dd> |
| You can also configure the maximum time (in hours) that backup files should be preserved since the most recent save time. |
| By default a zero expiration time is set which instructs JMeter to preserve backup files for ever. |
| Use the following property to control max preservation time: |
| |
| <pre class="source">jmeter.gui.action.save.keep_backup_max_hours=0</pre> |
| |
| </dd> |
| |
| <dt> |
| <span class="code">keep_backup_max_count</span> |
| </dt> |
| |
| <dd> |
| You can set the maximum number of backup files that should be preserved. By default <span class="code">10</span> backups will be kept. |
| Setting this to zero will cause the backups to never being deleted (unless <span class="code">keep_backup_max_hours</span> is set to a non null value) |
| Maximum backup files selection is processed <em>after</em> time expiration selection, so even if you set one year as the expiry time, |
| only the <span class="code">keep_backup_max_count</span> most recent backups files will be kept. |
| |
| <pre class="source">jmeter.gui.action.save.keep_backup_max_count=10</pre> |
| |
| </dd> |
| |
| </dl> |
| |
| </div> |
| |
| </div> |
| |
| <div class="subsection"> |
| <h2 id="component_hotkeys"> |
| 22.5 Adding Elements with Hotkeys<a class="sectionlink" href="#component_hotkeys" title="Link to here">¶</a> |
| </h2> |
| |
| <p> |
| When you do intense scripting with JMeter, there is a way to add elements to test plan quickly |
| with keyboard shortcuts. Default bindings are: |
| </p> |
| |
| <dl> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">0</span></span> |
| |
| </dt> |
| |
| <dd>Thread Group</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">1</span></span> |
| |
| </dt> |
| |
| <dd>HTTP Request</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">2</span></span> |
| |
| </dt> |
| |
| <dd>Regular Expression Extractor</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">3</span></span> |
| |
| </dt> |
| |
| <dd>Response Assertion</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">4</span></span> |
| |
| </dt> |
| |
| <dd>Constant Timer</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">5</span></span> |
| |
| </dt> |
| |
| <dd>Test Action</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">6</span></span> |
| |
| </dt> |
| |
| <dd>JSR223 PostProcessor</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">7</span></span> |
| |
| </dt> |
| |
| <dd>JSR223 PreProcessor</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">8</span></span> |
| |
| </dt> |
| |
| <dd>Debug Sampler</dd> |
| |
| <dt> |
| <span class="keycombo"><span class="keysym">Ctrl</span> + <span class="keysym">9</span></span> |
| |
| </dt> |
| |
| <dd>View Results Tree</dd> |
| |
| </dl> |
| |
| <div class="clear"></div> |
| <div class="note">The binding above are made for Windows QWERTY keyboards. For other platforms and keyboards ensure you adapt those values.</div> |
| <div class="clear"></div> |
| |
| <p> |
| To change these binding, please find "<span class="code">gui.quick_*</span>" properties within <span class="code">jmeter.properties</span> file as example, |
| it is recommended to put overrides for them into <span class="code">user.properties</span> file. |
| |
| </p> |
| |
| </div> |
| |
| <div class="subsection"> |
| <h2 id="browser_renderer_view_results_tree"> |
| 22.6 Browser renderer is not displaying in View Results Tree<a class="sectionlink" href="#browser_renderer_view_results_tree" title="Link to here">¶</a> |
| </h2> |
| |
| <p> |
| If you're using OpenJDK or Oracle Java version higher than 8, you'll notice that Browser Renderer is not displayed. |
| This is because JavaFX is not embedded. |
| In order to have this element you need to follow the below procedure. |
| </p> |
| |
| <ul> |
| |
| <li> |
| Follow this <a href="https://openjfx.io/openjfx-docs/">documentation</a> to install Java FX for your OS and Java version. |
| <br> |
| If you don't want to read it, here are the necessary steps: |
| |
| <ul> |
| |
| <li> |
| Go to <a href="https://gluonhq.com/products/javafx/">Gluon website</a> and download the runtime for your Java version and OS |
| </li> |
| |
| <li>Unzip it</li> |
| |
| <li> |
| Then configure a variable pointing to lib folder: |
| <br> |
| Linux/MacOSX: |
| <br> |
| |
| <pre class="source">export PATH_TO_FX=path/to/javafx-sdk-XX/lib</pre> |
| Windows: |
| <br> |
| |
| <pre class="source">set PATH_TO_FX=path/to/javafx-sdk-XX/lib</pre> |
| |
| </li> |
| |
| </ul> |
| |
| </li> |
| |
| <li> |
| Then open bin/jmeter file for Linux/MacOSX, bin/jmeter.bat for Windows, find JAVA9_OPTS variable and add: |
| <br> |
| Linux/MacOSX: |
| <br> |
| |
| <pre class="source">--module-path $PATH_TO_FX --add-modules javafx.web,javafx.swing</pre> |
| Windows: |
| <br> |
| |
| <pre class="source">--module-path %PATH_TO_FX% --add-modules javafx.web,javafx.swing</pre> |
| |
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