Performance test of Keycloak as Identity broker

Is there a way to test Keycloak performance if I have a flow where user on first login is redirected to other connected IdP?

For example, I setup “Login with Google”, or another instance of Keycloak, also known as Identity brokering?

I’m only aware of GitHub - keycloak/keycloak-benchmark: Keycloak Benchmark · GitHub, but this does not take into account external IdPs.

Think we found a way with Apache Jmeter and saving session details in variables to run the test across mentioned authentication flow.