We are testing a web application with secured access via a custom login. K6, Gafana and Influx db. The error count rises and the response time increases with increased VU as is to be expected. How do we gain insight into the cause and find a resolution is something not clear from the documentation. Metrics being mapped onto actionable causes, For instance we get a bunch of errors like
|INFO signalr/start Status code 400
|INFO Response body null
|INFO Response time 449.2371 ms
|INFO Error code 1400
INFO Status code 500
Error code description states generic error, status code error shows server error. Is there a way to get more verbose results ? Things like user machine running out of TCP slots leading to failed requests is obviously useless in a website test. Can anyone point me to some resource on how to translate metrics or errors into actionable causes, specifically for websites. Focus is on increasing success rates then increasing response times.