How to interpret k6's test results?
How to interpret k6's test results?
The official documentation does explain a bit on the different types of metrics reported by k6 and how to interpret them.
But having read them both, I still am not able to put two and two together. So let me be very specific, is the following correct?
The http_req_duration metric is the sum of:
- http_req_blocked: Time in the DNS lookup, connection, and TLS handshake phases.
- http_req_sending: Time to send the request.
- http_req_waiting: Time waiting for the server to process the request.
- http_req_receiving: Time to receive the response.
For example, if you have:
http_req_blocked: 20mshttp_req_sending: 10mshttp_req_waiting: 250mshttp_req_receiving: 20ms
The total http_req_duration would be 300ms.
If so, why it's not matching my following k6 test result, if not, then what's the correct way to interpret k6's test results, including http_req_blocked, http_req_connecting, http_req_duration, http_req_waiting and http_req_waiting?
The docs on built-in metrics are quite clear what value the http_req_duration Trend metric tracks:
Total time for the request. It’s equal to
http_req_sending+http_req_waiting+http_req_receiving(i.e. how long did the remote server take to process the request and respond, without the initial DNS lookup/connection times).
It does not include the timings from http_req_blocked.
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