<li>A cache for CSS Parsing of URLs has been introduced in this version, it is enabled by default. It is controlled by property <code>css.parser.cache.size</code>. It can be disabled by setting its value to <code>0</code>. See <bugzilla>59885</bugzilla></li>
<li>ThroughputController defaults have changed. Now defaults are Percent Executions which is global and no more per user. See <bugzilla>60023</bugzilla></li>
<li>Since version 3.1, HTML report ignores empty <code>Transaction Controller</code> (possibly generated by <code>If Controller</code> or <code>Throughput Controller</code>) when computing metrics. This provides more accurate metrics</li>
<li>Since version 3.1, Summariser ignores SampleResults generated by <code>Transaction Controller</code> when computing the live statistics, see <bugzilla>60109</bugzilla></li>
<li>Since version 3.1, when using Stripped modes (by default <code>StrippedBatch</code> is used), response will be stripped also for failing SampleResults, you can revert this to previous behaviour by setting <code>sample_sender_strip_also_on_error=false</code> in <code>user.properties</code>, see <bugzilla>60137</bugzilla></li>
<li>Since version 3.1, <code>jmeter.save.saveservice.connect_time</code> property value is <code>true</code>, meaning CSV file for results will contain an additional column containing connection time, see <bugzilla>60106</bugzilla></li>
<li>Since version 3.1, Random Timer subclasses (Gaussian Random Timer, Uniform Random Timer and Poisson Random Timer) implement interface <code><ahref="./api/org/apache/jmeter/timers/ModifiableTimer.html">org.apache.jmeter.timers.ModifiableTimer</a></code></li>
<li>Since version 3.1, if you don't select any language in JSR223 Test Elements, Apache Groovy language will be used. See <bugzilla>59945</bugzilla></li>
<li>Since version 3.1, CSV DataSet now trims variable names to avoid issues due to spaces between variables names when configuring CSV DataSet. This should not have any impact for you unless you use space at the begining or end of your variable names. See <bugzilla>60221</bugzilla></li>
<li>Since version 3.1, HTTP Request is able when using HttpClient4 (default) implementation to handle responses bigger than <code>2147483647</code>. To allow this 2 properties have been introduced:
<ul>
<li><code>httpsampler.max_bytes_to_store_per_request</code> (defaults to 10MB)will control what is held in memory, by default JMeter will only keep in memory the first 10MB of a response. If you have responses larger than this value and use assertions that are after the first 10MB, then you must increase this value</li>
<li><code>httpsampler.max_buffer_size</code> will control the buffer used to read the data. Previously JMeter used a buffer equal to Content-Length header which could lead to failures and make JMeter less resistant to faulty applications, but note this may impact response times and give slightly different results
than previous versions if your application returned a Content-Length header higher than current default value (65KB) </li>
<li><bug>60224</bug>Deprecate <code><ahref="./usermanual/component_reference.html#Monitor_Results_(DEPRECATED)">Monitor Results</a></code> listener. It will be dropped in next version</li>
<li><bug>60225</bug>Drop deprecated <code>__jexl</code> function, jexl support in BSF and dependency on <code>commons-jexl-1.1.jar</code> This function can be easily replaced with <code><ahref="./usermanual/functions.html#__jexl3">__jexl3</a></code> function</li>
<li><bug>60268</bug>Drop org.apache.jmeter.gui.action.Analyze and deprecate org.apache.jmeter.reporters.FileReporter (will be removed in next version)</li>
<li><bug>59882</bug>Reduce memory allocations for better throughput. Contributed by Benoit Wiart (b.wiart at ubik-ingenierie.com) through <pr>217</pr> and <pr>228</pr></li>
<li><bug>59885</bug>Optimize css parsing for embedded resources download by introducing a cache. Contributed by Benoit Wiart (b.wiart at ubik-ingenierie.com) through <pr>219</pr></li>
<li><bug>60229</bug>Add a new metric : sent_bytes. Implemented by Philippe Mouawad (p.mouawad at ubik-ingenierie.com) and contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><pr>211</pr>Differentiate the timing for JDBC Sampler. Use latency and connect time. Contributed by Thomas Peyrard (thomas.peyrard at murex.com)</li>
<li><bug>60023</bug>ThroughputController : Make "Percent Executions" and global the default values. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><bug>59975</bug>View Results Tree : Text renderer annoyingly scrolls down when content is bulky. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><bug>60267</bug>UX : In View Results Tree it should be possible to close the Configure popup by typing escape. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><pr>212</pr>Allow multiple selection and delete in HTTP Authorization Manager. Based on a patch by Benoit Wiart (b.wiart at ubik-ingenierie.com)</li>
<li><bug>59816</bug><pr>213</pr>Allow multiple selection and delete in HTTP Header Manager. Based on a patch by Benoit Wiart (b.wiart at ubik-ingenierie.com)</li>
<li><bug>59963</bug>New function <code>__RandomFromMultipleVars</code>: Ability to compute a random value from values of one or more variables. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><bug>60065</bug>Report / Dashboard : Improve Dashboard Error Summary by adding response message to "Type of error". Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><bug>60287</bug>Report / Dashboard : Have a new Top5 Errors by sampler table in Dashboard. Implemented by Philippe Mouawad (p.mouawad at ubik-ingenierie.com) and contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><bug>59924</bug>The log level of <em>XXX</em> package is set to <code>DEBUG</code> if <code>log_level.<em>XXXX</em></code> property value contains spaces, same for <code>__log</code> function</li>
<li><bug>60085</bug>Remove cache for prepared statements, as it didn't work with the current JDBC pool implementation and current JDBC drivers should support caching of prepared statements themselves.</li>
<li><bug>60266</bug>Usability/ UX : It should not be possible to close/exit/Revert/Load/Load a recent project or create from template a JMeter plan or open a new one if a test is running</li>
<li><bug>57305</bug>Remove dependency of <code>ProxyControl</code> on <code>GuiPackage</code>. Based on patches by jarek102 at gmail.com and Wyatt Epp (wyatt.epp at gmail.com)</li>
<li><bug>58888</bug>HTTP(S) Test Script Recorder (ProxyControl) does not add TestElement's returned by <code>SamplerCreator#createChildren()</code></li>
<li><bug>60278</bug>Since 2.13 (and <bug>57514</bug>), Aggregate Graph, Summary Report and Aggregate Report lost precision in the Error, Rate and Bandwidth values saved in the saved file csv</li>
<li><bug>59964</bug>JSR223 Test Element : Cache compiled script if available is not correctly reset. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><bug>60049</bug>When using Timers with high delays or Constant Throughput Timer with low throughput, Scheduler may take a lot of time to exit, same for Shutdown test </li>
<li><bug>60089</bug>Report / Dashboard : Bytes throughput Over Time has reversed Sent and Received bytes. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li><bug>60125</bug>Report / Dashboard : Dashboard cannot be generated if the default delimiter is <code>\t</code>. Based on a report from Tamas Szabadi (tamas.szabadi at rightside.co)</li>
<li><bug>60295</bug>JSON Extractor doesn't index array elements when only one element is found. Based on a patch by Roberto Braga (roberto.braga at sociale.it)</li>
The fix is to run JMeter as Administrator, it will create the registry key for you, then you can restart JMeter as a normal user and you won't have the warning anymore.
</li>
<li>
With Oracle Java 7 and Mac Book Pro Retina Display, the JMeter GUI may look blurry.
