on
and the <code>reviews.default: proxy server</code> service. The second span is a child of the first span and represents the
server-side span of the call. The screenshot shows that the call took 14.60 ms.</p><h2 id=trace-sampling>Trace sampling</h2><p>Istio captures traces at a configurable trace sampling percentage. To learn how to modify the trace sampling percentage,
visit the <a href=/v1.19/docs/tasks/observability/distributed-tracing/mesh-and-proxy-config/#customizing-trace-sampling>Distributed Traci