 server sidecars are present with telemetry configured by default. This is the default Istio configuration.</li></ul><h3 id=benchmarking-tools>Benchmarking tools</h3><p>Istio uses the following tools for benchmarking</p><ul><li><a href=https://fortio.org/><code>fortio.org</code></a> - a constant throughput load testing tool.</li><li><a href=https://github.com/envoyproxy/nighthawk><code>nighthawk</code></a> - a load testing tool based on Envoy.</li><li><a href=https://github.com/istio/tools/tree/release-1.20