I am part of data products team from DPE . I have some queries regarding SLOs and related metrics and labels

• Could someone please help me to understand in case a service is not routed via istio what are good prometheus metrics or labels to calculate latency ? I can get the service availability for AQS 2.0 Device Analytics using http_requests_total metrics . Any information on latency or sample query would be helpful .

• Also is there a difference between these two istio latency metrics that other services are generating?

istio_sli_latency_request_duration_milliseconds_bucket:increase5m
istio_sli_latency_request_duration_milliseconds_count:increase5m
Any documentation for these istio metrics which is available?