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Grafana k6

Results output

End of test

Open source

End of test

When a test finishes, k6 prints a top-level overview of the aggregated results to stdout.

checks.........................: 50.00% ✓ 45       ✗ 45
data_received..................: 1.3 MB 31 kB/s
data_sent......................: 81 kB  2.0 kB/s
group_duration.................: avg=6.45s    min=4.01s    med=6.78s    max=10.15s   p(90)=9.29s    p(95)=9.32s
http_req_blocked...............: avg=57.62ms  min=7µs      med=12.25µs  max=1.35s    p(90)=209.41ms p(95)=763.61ms
http_req_connecting............: avg=20.51ms  min=0s       med=0s       max=1.1s     p(90)=100.76ms p(95)=173.41ms
http_req_duration..............: avg=144.56ms min=104.11ms med=110.47ms max=1.14s    p(90)=203.54ms p(95)=215.95ms
  { expected_response:true }...: avg=144.56ms min=104.11ms med=110.47ms max=1.14s    p(90)=203.54ms p(95)=215.95ms
http_req_failed................: 0.00%  ✓ 0        ✗ 180
http_req_receiving.............: avg=663.96µs min=128.46µs med=759.82µs max=1.66ms   p(90)=1.3ms    p(95)=1.46ms
http_req_sending...............: avg=88.01µs  min=43.07µs  med=78.03µs  max=318.81µs p(90)=133.15µs p(95)=158.3µs
http_req_tls_handshaking.......: avg=29.25ms  min=0s       med=0s       max=458.71ms p(90)=108.31ms p(95)=222.46ms
http_req_waiting...............: avg=143.8ms  min=103.5ms  med=109.5ms  max=1.14s    p(90)=203.19ms p(95)=215.56ms
http_reqs......................: 180    4.36938/s
iteration_duration.............: avg=12.91s   min=12.53s   med=12.77s   max=14.35s   p(90)=13.36s   p(95)=13.37s
iterations.....................: 45     1.092345/s
vus............................: 1      min=1      max=19
vus_max........................: 20     min=20     max=20

Besides this default summary, k6 can output the results in other formats at the end of the test:

On this page	Result format	Read about…
Custom summary	Aggregated	Using the `handleSummary()` to make completely custom reports
CSV	Time-stamped data points	Writing results as a CSV file, and the structure of the data
JSON	Time-stamped data points	Writing results as a JSON file, and the structure of the data

The default summary

The end-of-test summary reports details and aggregated statistics for the primary aspects of the test:

Summary statistics about each built-in and custom metric (e.g. mean, median, p95, etc).
A list of the test’s groups and scenarios
The pass/fail results of the test’s thresholds and checks.

Ramp_Up ✓ [======================================] 00/20 VUs  30s
     █ GET home - https://example.com/

       ✓ status equals 200

     █ Create resource - https://example.com/create

       ✗ status equals 201
        ↳  0% — ✓ 0 / ✗ 45

     checks.........................: 50.00% ✓ 45       ✗ 45
     data_received..................: 1.3 MB 31 kB/s
     data_sent......................: 81 kB  2.0 kB/s
     group_duration.................: avg=6.45s    min=4.01s    med=6.78s    max=10.15s   p(90)=9.29s    p(95)=9.32s
     http_req_blocked...............: avg=57.62ms  min=7µs      med=12.25µs  max=1.35s    p(90)=209.41ms p(95)=763.61ms
     http_req_connecting............: avg=20.51ms  min=0s       med=0s       max=1.1s     p(90)=100.76ms p(95)=173.41ms
   ✗ http_req_duration..............: avg=144.56ms min=104.11ms med=110.47ms max=1.14s    p(90)=203.54ms p(95)=215.95ms
       { expected_response:true }...: avg=144.56ms min=104.11ms med=110.47ms max=1.14s    p(90)=203.54ms p(95)=215.95ms
     http_req_failed................: 0.00%  ✓ 0        ✗ 180
     http_req_receiving.............: avg=663.96µs min=128.46µs med=759.82µs max=1.66ms   p(90)=1.3ms    p(95)=1.46ms
     http_req_sending...............: avg=88.01µs  min=43.07µs  med=78.03µs  max=318.81µs p(90)=133.15µs p(95)=158.3µs
     http_req_tls_handshaking.......: avg=29.25ms  min=0s       med=0s       max=458.71ms p(90)=108.31ms p(95)=222.46ms
     http_req_waiting...............: avg=143.8ms  min=103.5ms  med=109.5ms  max=1.14s    p(90)=203.19ms p(95)=215.56ms
     http_reqs......................: 180    4.36938/s
     iteration_duration.............: avg=12.91s   min=12.53s   med=12.77s   max=14.35s   p(90)=13.36s   p(95)=13.37s
     iterations.....................: 45     1.092345/s
     vus............................: 1      min=1      max=19
     vus_max........................: 20     min=20     max=20

ERRO[0044] some thresholds have failed

Above’s an example of a report that k6 generated after a test run.

It has a scenario, Ramp_Up
The requests are split into two groups:
- GET home, which has a check that responses are 200 (all passed)
- Create resource, which has a check that responses are 201 (all failed)
The test has one threshold, requiring that 95% of requests have a duration under 200ms (failed)

Summary options

k6 provides some options to filter or silence summary output:

The --summary-trend-stats option defines which Trend metric statistics to calculate and show.
The --summary-time-unit option forces k6 to use a fixed-time unit for all time values in the summary.
The --no-summary option completely disables report generation, including --summary-export and handleSummary().