TLDR, test setup fortio client and server, diff modes, (both/single sidecar), run sequentially; gather metrics from prometheus, render by istio-perf website.
today already under mtls.
runner, https://github.com/istio/tools/blob/master/perf/benchmark/runner/runner.py
benchmark job, https://github.com/istio/tools/blob/master/perf/benchmark/run_benchmark_job.sh