The historical metrics view displays all Grey Matter metrics collected for this service. These metrics are automatically collected by the Sidecar deployed with each service, and aggregated mesh-wide by an internal Prometheus server. The views here present the Grey Matter metrics collected by the metrics, but all Envoy metrics are collected as well.
Historical Metrics: Summary
The summary view shows some of the most important metrics collected. Here are things like uptime, service-level latencies, route-level usage, host performance, request and error rates.
Historical Metrics: Routes
The routes view focuses on the route level performance rather than the service as a whole.
Historical Metrics: Instances
The Instances view shows the number of individual instances running for the given service. Each line shows a unique ID for each instance, as well as the time the service has been up. Clicking on the Instance ID will drop you down into the real-time metrics view.