K6 to influxdb with lesser http_req_duration data

Grafana k6 OSS Support
13

HI @dan_nm ,

This might actually be a Windows + go problem as explained in this comment the gist of which is that windows time is in general not a very high resolution or at least not as high resolution as it is used by go.

I don’t think we can do much really and the workarounds are:

  1. introduce a tag to make certain you are not sending metrics with same time and tag set (what you’ve done)
  2. aggregating metrics in k6 so that this basically isn’t a problem - we plan on doing this but unlikely to happen soon (1-2 releases)
  3. Try telegraf for aggregating metrics … .although my experience is spotty. So far the best I have managed to do is statsd input (which aggregates quite well) + influxdb output (in my case influxdbv2, but that really isn’t necessary AFAIK). Here is influxdbv1->influxdbv2 setup with some aggregation that isn’t great (as noted in the comment).
  4. I wonder if influxdbv2 hasn’t fixed it and trying GitHub - li-zhixin/xk6-influxdbv2: A k6 extension output to influxdb. would help :man_shrugging:
  5. Don’t use windows for running your load tests :wink:
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