gNMI Telemetry Performance under Dynamic Control Plane Churn

[rohit-rp]

System Test Plan see for more info: b/540867580

• Objective: Verify that gNMI state streaming (specifically interface counters and AFT states) remains stable and within latency SLOs while the device is actively processing high-rate routing/gRIBI updates.
  • Interfaces Used: gNMI, gRIBI
  • Expected Outcome Summary:
    • Establish active gNMI subscriptions for interface counters and generate high-rate traffic
    • Simultaneously, inject a continuous stream of gRIBI route modifications (churn).
    • We monitor the gNMI stream and expect the device to continue streaming interface counters at the configured interval without packet drops, session disconnects, or latency spikes exceeding defined maximum
  • Success Metrics:
    • Subscription Stability: The gNMI session does not disconnect or report sync loss during control plane churn.
    • On-time Delivery: 100% of telemetry updates are received within the configured interval (no starvation).
    • Data Accuracy: Interface counters match the actual traffic volume sent by the ATE

[OpenConfigBot]

Pull Request Functional Test Report for #5985 / 95c69ce

Virtual Devices

Device	Test	Test Documentation	Job	Raw Log
Arista cEOS		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn	98f67b96	Log
Cisco 8000E		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn	4669cc93	Log
Cisco XRd		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn	f3c717c7	Log
Juniper ncPTX		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn	53ec55a6	Log
Nokia SR Linux		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn	2f50a206	Log
Openconfig Lemming		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn	d2f7f8b1	Log

Hardware Devices

Device	Test	Test Documentation	Raw Log
Arista		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn
Cisco		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn
Juniper		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn
Nokia		gNMI-1.30: gNMI Telemetry Performance under Dynamic Control Plane Churn

Help

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new system test plan, gNMI-1.30, designed to verify that gNMI state streaming remains stable and within latency SLOs while the device is actively processing high-rate routing/gRIBI updates. It includes test documentation, metadata, and updates to the test registry.

Highlights

• New Test Case: Added a new system test plan 'gNMI-1.30' to verify gNMI telemetry performance under dynamic control plane churn.
• Test Documentation: Created a detailed README outlining the test environment, procedures, and pass/fail criteria for baseline, scaled, and negative test scenarios.
• Test Registry: Registered the new test case in the global test registry.

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[gemini-code-assist]

Code Review

This pull request introduces a new test plan, gNMI-1.30, designed to verify gNMI telemetry performance under dynamic control plane churn. It adds the test README, metadata, and registers the test in testregistry.textproto. The feedback suggests replacing the placeholder 'FFF' in the required DUT platform section of the README with a valid platform value.