Why tuning

If it takes interest and momentum to push a new technology, then what is needed to get this technology go to live production is hard working. Including Cloud Native and Istio.
In pre-launch performance testing, Istio out-of-box provided observability, operational convenience, and also introduced pain: Increased service latency. How to minimize latency has become a critical task.

My Scenario:

• SERVICE-A invoke SERVICE-B
• Latency of Service-A, which was previously 9ms at P50, is now 14ms at P50.

Bottleneck Analysis

There are two paths under my feet: