Hello,
When I invoke a service endpoint, is it possible to get a break down of the latencies at different Istio components such as :
Istio Gateway -> Virtual Service -> Destination Rules -> Mixer -> Pilot -> Pod
I know Kiali provided traceability, but if there are metrics available from each of these components for a given service invocation, we would like to plot some graphs on Grafana.
VirtualService and DestinationRule are configuration components that result in config pushed to the proxies. They are not components that exist with in the request path. As a result, they do not have associated latencies.
Pilot is also not on the request path, and so will not have an associated latency.
Gateway --> Pod is essentially all that you will see (unless you have enabled Mixer-based policy checks).
For individual requests, you will want to enable tracing and look at individual distributed traces to see the per-component latency breakdown.
In aggregate, the metrics will show the latency (based on selection by source and destination). These should already be show in the service/workload dashboards provided in the Grafana addon.
Does that make sense?