# Which environment variable can be set to enable detailed gRPC timing histograms (metrics) in Argo CD?

Argo CD, Hard (Expert), Performance & Scaling. https://k8wiz.com/uquiz/which-environment-variable-can-be-set-to-enable-detailed-grpc-timing-histograms-metrics-in-argo-cd

- A. ARGOCD_ENABLE_GRPC_TIME_HISTOGRAM
- B. ARGOCD_ENABLE_METRICS
- C. ARGOCD_DEBUG_TIMING
- D. ARGOCD_GIT_POLL_INTERVAL

**Answer:** ARGOCD_ENABLE_GRPC_TIME_HISTOGRAM

**Explanation:** Setting `ARGOCD_ENABLE_GRPC_TIME_HISTOGRAM=true` enables collection of gRPC call duration metrics in Argo CD.