Venkat Matta

it's all about the Performance Testing

Taurus Reporting

Reporting & Results Processing

Reporting functionality in Taurus is delegated to special modules category. There is special internal facility that reads results from executors, aggregates them and feeds to configured reporters. Reporters are specified as list under top-level config key reporting, by default it is configured with two reporters:

---
reporting:
- final_stats
- console

The example above uses a shorthand form for specifying reporters. Full form is using dictionaries and allows specifying some additional settings for reporters:

---
reporting:
- module: final_stats
- module: console

Possible reporting modules are listed below.

Post-Test Summary

This is the simplest reporter that just prints few basic KPIs in the console log after test execution, for example:

18:04:24 INFO: Samples count: 367, 8.17% failures
18:04:24 INFO: Average times: total 0.385, latency 0.115, connect 0.000
18:04:24 INFO: Percentile   0.0%: 0.125
18:04:24 INFO: Percentile  50.0%: 0.130
18:04:24 INFO: Percentile  90.0%: 1.168
18:04:24 INFO: Percentile  95.0%: 1.946
18:04:24 INFO: Percentile  99.0%: 2.131
18:04:24 INFO: Percentile  99.9%: 3.641
18:04:24 INFO: Percentile 100.0%: 3.641

This reporter is enabled by default. To enable it manually, use following config, some additional options are available:

---
reporting:
- module: final_stats
  summary: true  # overall samples count and percent of failures
  percentiles: true  # display average times and percentiles
  failed-labels: false  # provides list of sample labels with failures
  test-duration: true  # provides test duration
  dump-xml: filename to export data in XML format
  dump-csv: filename to export data in CSV format

Dump Summary for Jenkins Plot Plugin

Two options dump-csv and dump-xml allows to export final cumulative stats into files that can be used byJenkins Plot Plugin to plot historical data inside Jenkins. Prefer CSV as it is much easier to use with Plot Plugin. XML format also can be used with other tools to automate results processing.

Field names with explanations:

  • label – is the sample group for which this CSV line presents the stats. Empty label means total of all labels
  • concurrency – average number of Virtual Users
  • throughput – total count of all samples
  • succ – total count of not-failed samples
  • fail – total count of saved samples
  • `avg_rt` – average response time
  • `stdev_rt` – standard deviation of response time
  • `avg_ct` – average connect time if present
  • `avg_lt` – average latency if present
  • `rc_200` – counts for specific response codes
  • perc0.0 .. perc100.0 – percentile levels for response time, 0 is also minimum response time, 100 is maximum

Console Screen

This reporter shows fullscreen dashboard with some KPIs and even ASCII-art graphs like this:

Console Screen

This reporter is enabled by default. To enable it manually, use following config:

---
reporting:
- console

There is module settings for Console Screen, containing option disable. It allows easy disabling fullscreen display by using command-line switch -o:

bzt config.yml -o modules.console.disable=true

On Windows, Console Screen is shown in separate window and users may change font size by holding Ctrl key and using mouse wheel. Two additional options are dummy-cols and dummy-rows, they affect the size of dummy screen that is used for non-tty output.

BlazeMeter.com Reporting Service

Like it always happens with tools that focused on executing tests, they are unable to provide sufficient reporting functionality. As professional user, you need some centralized storage to be able to access test results in convenient and interactive way, compare different executions, see trends over time and collaborate with your colleagues. BlazeMeter.com offers such service, it has both commercial and free of charge versions.

BlazeMeter Report

Anonymous Usage

The simplest way to get a taste of BlazeMeter reporting is to use -report command-line switch. This will enable result feeding to service without any other settings required. You will receive the link for your report in the console text, and the link will be automatically opened in your default browser, see browser-openoption for more tuning.

The official policy for BlazeMeter reports uploaded from Taurus, is that anonymous reports are kept for 7 days and if you’re using your own account, then reports are kept according to the retention policy of your account. For details see BlazeMeter service website.

Personalized Usage

If you want the results to be stored in your existing BlazeMeter account, you’ll need to specify the reporting settings in your configuration file. Get the API token from BlazeMeter.com (find it under your Settings => API Key) and put it into token option:

---
modules:
  blazemeter:
    token: TDknBxu0hmVnJ7NqtG2F

It is highly recommended to place the token setting in your personal per-user config ~/.bzt-rc to prevent it from being logged and collected in artifacts.

Now you can use -report command-line switch, or you can set BlazeMeter reporting as part of your config, the test option specifies test name to use, project names group of tests:

---
reporting:
- module: blazemeter
  report-name: Jenkins Build 1
  test: Taurus Demo
  project: Taurus Tests Group

Advanced settings:

---
modules:
  blazemeter:
    address: https://a.blazemeter.com  # reporting service address
    data-address: https://data.blazemeter.com  # data service address
    browser-open: start  # auto-open the report in browser, 
                         # can be "start", "end", "both", "none"
    send-interval: 30s   # send data each n-th second
    timeout: 5s  # connect and request timeout for BlazeMeter API
    artifact-upload-size-limit: 5  # limit max size of file (in megabytes) 
                                   # that goes into zip for artifact upload, 10 by default
 
    # following instructions will have effect when no per-reporter settings
    report-name: My Next Test  # if you will use value 'ask', it will ask it from command line
    test: Taurus Test
    project: My Local Tests

Note how easy is to set report settings from command line, i.e. from inside Jenkins build step:

bzt mytest.yml -o modules.blazemeter.report-name="Jenkins Build ${BUILD_NUMBER}"

JUnit XML Reporter

This reporter provides test results in JUnit xml format parsable by Jenkins JUnit Plugin. Reporter has two options:

  • filename (full path to report file, optional. By default xunit.xml in artifacts dir)
  • data-source (which data source to use: sample-labels or pass-fail)

If sample-labels used as source data, report will contain urls with test errors. If pass-fail used as source data, report will contain Pass/Fail criterias information.

Sample configuration:

---
reporting:
- module: junit-xml
  filename: /path_to_file/file.xml
  data-source: pass-fail

Results Reading and Aggregating Facility

Aggregating facility module is set through general settings, by default it is:

---
settings:
  aggregator: consolidator

The consolidator has several settings:

---
modules:
  consolidator:
    generalize-labels: false  # replace digits and UUID sequences 
                              # with N and U to decrease label count
    ignore-labels: # sample labels from this list 
                   # will be ignored by results reader
      - ignore
    buffer-seconds: 2  # this buffer is used to wait 
                       # for complete data within a second
    percentiles:  # percentile levels to track, 
                  # 0 also means min, 100 also means max 
    - 0.0
    - 50.0
    - 90.0
    - 95.0
    - 99.0
    - 99.9
    - 100.0

Note that increasing buffer-seconds might sometimes make results aggregation more robust, by price of delaying analysis.

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This entry was posted on March 22, 2016 by in Taurus.
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