/blog/2019/egress-performance/./cpu_usage3.png title="CPU usage normalized by TPS"><img class=element-to-stretch src=/v1.1/blog/2019/egress-performance/./cpu_usage3.png alt="CPU usage normalized by TPS"></a></div><figcaption>CPU usage normalized by TPS</figcaption></figure><p>In terms of CPU consumption per transaction, Istio has used significantly more CPU only in the egress gateway + SNI proxy case.</p><h2 id=conclusion>Conclusion</h2><p>In this investigation, we tried different options to access an exter