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hassy | 3 years ago

Yes indeed but wrk2 or Vegeta is still better for this particular use case (unless k6 has support for setting a constant RPS rate, afaik it does not), as otherwise the overhead of establishing a new TCP connection for a single HTTP request will dominate the benchmark.

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imiric|3 years ago

> unless k6 has support for setting a constant RPS rate, afaik it does not

Yes it can, via the `constant-arrival-rate` executor[1].

> the overhead of establishing a new TCP connection for a single HTTP request will dominate the benchmark

By default, k6 will reuse TCP connections, and you have to explicitly disable it[2].

I'm not saying that wrk2 or Vegeta wouldn't be a good fit for this test, but k6 is also capable of it, with some minor configuration changes.

[1]: https://k6.io/docs/using-k6/scenarios/executors/constant-arr...

[2]: https://k6.io/docs/using-k6/k6-options/reference#no-connecti...