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<!DOCTYPE document[
<!ENTITY sect-num '15'>
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<document prev="generating-dashboard.html" next="best-practices.html" id="$Id: realtime-results.xml 1457581 2013-03-17 22:58:08Z sebb $">

<properties>
  <author email="dev@jmeter.apache.org">Apache JMeter developers</author>
  <title>User's Manual: Live Statistics</title>
</properties>

<body>

<section name="&sect-num;. Real-time results" anchor="realtime-results">
<p>Since JMeter 2.13 you can get real-time results sent to a backend through the 
<a href="component_reference.html#Backend_Listener">Backend Listener</a> using potentially any backend (JDBC, JMS, Webservice, &hellip;)
by providing a class which implements <a href="../api/org/apache/jmeter/visualizers/backend/AbstractBackendListenerClient.html" >AbstractBackendListenerClient</a>.<br/>
JMeter ships with:
<ul>
<li>a GraphiteBackendListenerClient which allows you to send metrics to a Graphite Backend.<br/>
This feature provides:
<ul>
<li>Live results</li>
<li>Nice graphs for metrics</li>
<li>Ability to compare 2 or more load tests</li>
<li>Storing monitoring data as long as JMeter results in the same backend</li>
<li>&hellip;</li>
</ul>
</li>
<li>an InfluxDBBackendListenerClient introduced in JMeter 3.2 which allows you to send metrics to an InfluxDB Backend using UDP or HTTP protocols
This feature provides:
<ul>
<li>Live results</li>
<li>Nice graphs for metrics</li>
<li>Ability to compare 2 or more load tests</li>
<li>Ability to add annotations to graphs</li>
<li>Storing monitoring data as long as JMeter results in the same backend</li>
<li>&hellip;</li>
</ul>
</li>
</ul>
In this document we will present the configuration setup to graph and historize the data in different backends:
<ul>
<li>InfluxDB setup for InfluxDBBackendListenerClient</li>
<li>InfluxDB setup for GraphiteBackendListenerClient</li>
<li>Grafana</li>
<li>Graphite</li>
</ul>
</p>
<subsection name="&sect-num;.1 Metrics exposed" anchor="metrics">
    <subsection name="&sect-num;.1.1 Thread/Virtual Users metrics" anchor="metrics-threads">
    <p>
    Thread metrics are the following:
    </p>
    <dl>
      <dt><code>&lt;rootMetricsPrefix&gt;test.minAT</code></dt><dd>Min active threads</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;test.maxAT</code></dt><dd>Max active threads</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;test.meanAT</code></dt><dd>Mean active threads</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;test.startedT</code></dt><dd>Started threads</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;test.endedT</code></dt><dd>Finished threads</dd>
    </dl>
    </subsection>
    <subsection name="&sect-num;.1.2 Response times metrics" anchor="metrics-response-times">
    <p>Response related metrics are the following:</p>
    <dl>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ok.count</code></dt>
      <dd>Number of successful responses for sampler name</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.h.count</code></dt>
      <dd>Server hits per seconds, this metric cumulates Sample Result and Sub results (if using Transaction Controller, "Generate parent sampler" should be unchecked)</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ok.min</code></dt>
      <dd>Min response time for successful responses of sampler name</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ok.max</code></dt>
      <dd>Max response time for successful responses of sampler name</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ok.avg</code></dt>
      <dd>Average response time for successful responses of sampler name.</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ok.pct&lt;percentileValue&gt;</code></dt>
      <dd>Percentile computed for successful responses of sampler name. There will be one metric for each calculated value.</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ko.count</code></dt>
      <dd>Number of failed responses for sampler name</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ko.min</code></dt>
      <dd>Min response time for failed responses of sampler name</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ko.max</code></dt>
      <dd>Max response time for failed responses of sampler name</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ko.avg</code></dt>
      <dd>Average response time for failed responses of sampler name.</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.ko.pct&lt;percentileValue&gt;</code></dt>
      <dd>Percentile computed for failed responses of sampler name. There will be one metric for each calculated value.</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.a.count</code></dt>
      <dd>Number of responses for sampler name (sum of ok.count and ko.count)</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.sb.bytes</code></dt>
      <dd>Sent Bytes</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.rb.bytes</code></dt>
      <dd>Received Bytes</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.a.min</code></dt>
      <dd>Min response time for responses of sampler name (min of ok.count and ko.count)</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.a.max</code></dt>
      <dd>Max response time for responses of sampler name (max of ok.count and ko.count)</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.a.avg</code></dt>
      <dd>Average response time for responses of sampler name (avg of ok.count and ko.count)</dd>
      <dt><code>&lt;rootMetricsPrefix&gt;&lt;samplerName&gt;.a.pct&lt;percentileValue&gt;</code></dt>
      <dd>Percentile computed for responses of sampler name. There will be one metric for each calculated value. (calculated on the totals for OK and failed samples)</dd>
    </dl>
    <p>
    The default <code>percentiles</code> setting on the <complink name="Backend Listener"/> is "90;95;99", 
    i.e. the 3 percentiles 90%, 95% and 99%.
    </p>
    <p>
    The <a href="http://graphite.readthedocs.io/en/latest/feeding-carbon.html#step-1-plan-a-naming-hierarchy">Graphite naming hierarchy</a>
    uses dot (".") to separate elements. This could be confused with decimal percentile values.
    JMeter converts any such values, replacing dot (".") with underscore ("-"). 
    For example, "<code>99.9</code>" becomes "<code>99_9</code>"
    </p>
    <p>
    By default JMeter sends metrics for all samplers accumulated under the samplerName "<code>all</code>".
    If the Backend Listener <code>samplersList</code> is configured, then JMeter also sends the metrics
    for the matching sample names unless <code>summaryOnly=true</code>
    </p>
    </subsection>
</subsection>
<subsection name="&sect-num;.2 JMeter configuration" anchor="jmeter-configuration">
    <p>
    To make JMeter send metrics to backend add a <a href="./component_reference.html#Backend_Listener" >BackendListener</a> using the InfluxDBBackendListenerClient.
    </p>
    <figure width="902" height="341" image="backend_listener.png">InfluxDB configuration</figure>
</subsection>

<subsection name="&sect-num;.3 InfluxDB database configuration" anchor="influxdb_db_configuration">
    <p>Connect to InfluxDB using <a href="https://docs.influxdata.com/influxdb/latest/introduction/getting_started/" >InfluxDB’s Command Line Interface (CLI).</a> and <a href="https://docs.influxdata.com/influxdb/latest/query_language/database_management/" >create JMeter database</a>:
    <ul>
        <li>jmeter : Used by InfluxDB to store the data sent by the Backend Listener</li>
    </ul>
    You can do it too by using the HTTP API.
    </p>

<subsection name="&sect-num;.3.1 InfluxDB setup for InfluxDBBackendListenerClient" anchor="influxdb">
<p>InfluxDB is an open-source, distributed, time-series database that allows to 
easily store metrics.
Installation and configuration is very easy, read this for more details <a href="https://docs.influxdata.com/influxdb/latest/introduction/installation/" target="_blank" >InfluxDB documentation</a>.<br/>
InfluxDB data can be easily viewed in a browser through <a href="http://grafana.org/"  target="_blank">Grafana</a>.
</p>
</subsection>
</subsection>
    
<subsection name="&sect-num;.4 Grafana configuration" anchor="grafana_configuration">
    <p>
    Installing grafana<br/>
    Read <a href="http://docs.grafana.org/" target="_blank">documentation</a> for more details.
    Add the <a href="http://docs.grafana.org/features/datasources/influxdb/" target="_blank">datasource</a><br/>
    </p>
    Here is the kind of dashboard that you could obtain:
    <figure width="1265" height="581" image="grafana_dashboard.png">Grafana dashboard</figure> 
</subsection>

<subsection name="&sect-num;.5 Graphite" anchor="graphite">
<p>HELP WELCOME for this section, see <a href="../building.html" >Contributing documentation</a></p>
</subsection>


</section>

</body>
</document>
