d by default. This is the default Istio configuration.</li><li><code>v2-sd-full-nullvm_both</code> Export Stackdriver metrics, access logs and edges with telemetry v2 <code>nullvm</code> configured.</li><li><code>v2-sd-nologging-nullvm_both</code> Same as above, but does not export access logs.</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 too