16. Real-time results¶

16.1.1 Thread/Virtual Users metrics¶

Thread metrics are the following:

<rootMetricsPrefix>test.minAT

Min active threads

<rootMetricsPrefix>test.maxAT

Max active threads

<rootMetricsPrefix>test.meanAT

Mean active threads

<rootMetricsPrefix>test.startedT

Started threads

<rootMetricsPrefix>test.endedT

Finished threads

16.1.2 Response times metrics¶

Response related metrics are the following:

<rootMetricsPrefix><samplerName>.ok.count

Number of successful responses for sampler name

<rootMetricsPrefix><samplerName>.h.count

Server hits per seconds, this metric cumulates Sample Result and Sub results (if using Transaction Controller, "Generate parent sampler" should be unchecked)

<rootMetricsPrefix><samplerName>.ok.min

Min response time for successful responses of sampler name

<rootMetricsPrefix><samplerName>.ok.max

Max response time for successful responses of sampler name

<rootMetricsPrefix><samplerName>.ok.avg

Average response time for successful responses of sampler name.

<rootMetricsPrefix><samplerName>.ok.pct<percentileValue>

Percentile computed for successful responses of sampler name. There will be one metric for each calculated value.

<rootMetricsPrefix><samplerName>.ko.count

Number of failed responses for sampler name

<rootMetricsPrefix><samplerName>.ko.min

Min response time for failed responses of sampler name

<rootMetricsPrefix><samplerName>.ko.max

Max response time for failed responses of sampler name

<rootMetricsPrefix><samplerName>.ko.avg

Average response time for failed responses of sampler name.

<rootMetricsPrefix><samplerName>.ko.pct<percentileValue>

Percentile computed for failed responses of sampler name. There will be one metric for each calculated value.

<rootMetricsPrefix><samplerName>.a.count

Number of responses for sampler name (sum of ok.count and ko.count)

<rootMetricsPrefix><samplerName>.a.min

Min response time for responses of sampler name (min of ok.count and ko.count)

<rootMetricsPrefix><samplerName>.a.max

Max response time for responses of sampler name (max of ok.count and ko.count)

<rootMetricsPrefix><samplerName>.a.avg

Average response time for responses of sampler name (avg of ok.count and ko.count)

<rootMetricsPrefix><samplerName>.a.pct<percentileValue>

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)

The default percentiles setting on the Backend Listener is "90;95;99", i.e. the 3 percentiles 90%, 95% and 99%.

The Graphite naming hierarchy uses dot (".") to separate elements. This could be confused with decimal percentile values. JMeter converts any such values, replacing dot (".") with underscore ("-"). For example, "99.9" becomes "99_9"

By default JMeter sends metrics for all samplers accumulated under the samplerName "all". If the Backend Listener samplersList is configured, then JMeter also sends the metrics for the matching sample names unless summaryOnly=true

16.2.1 InfluxDB graphite listener configuration¶

To enable Graphite listener in InfluxDB, edit files /opt/influxdb/shared/config.toml or /usr/local/etc/influxdb.conf, find "[[graphite]]" and set this:

# Configure the graphite api
[[graphite]]
enabled = true
bind-address = ":2003" # If not set, is actually set to bind-address.
database = "jmeter"  # store graphite data in this database
    

16.2.2 InfluxDB database configuration¶

Connect to InfluxDB using influx shell and create two databases:

• grafana : Used by Grafana to store the dashboards we will create
• jmeter : Used by InfluxDB to store the data sent to Graphite Listener as per database="jmeter" config element in influxdb.conf or config.toml

16.2.3 Grafana configuration¶

Installing grafana is just a matter of putting the unzipped bundle behind an Apache HTTP server.
Read documentation for more details. Open config.js file and find datasources element, and edit it like this:

datasources: {
  influxdb: {
    type: 'influxdb',
    url: "http://influx_db_host:8086/db/jmeter",
    username: 'root',
    password: 'root',
  },
  grafana: {
    type: 'influxdb',
    url: "http://influx_db_host:8086/db/grafana",
    username: 'root',
    password: 'root',
    grafanaDB: true
  },
},