[Optimization] Improve traceroute_packetin_with_vrf_selection_test run time - #5806
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Summary of ChangesHello, 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 optimizes the execution time of the traceroute_packetin_with_vrf_selection_test by transitioning from static wait times to event-driven telemetry monitoring. By leveraging gnmi.Watch on OTG counters, the test suite now concludes immediately upon reaching the required packet threshold, significantly reducing idle time. Additionally, the refactoring removes unnecessary configuration and protocol initialization steps, resulting in a cleaner and more efficient test setup. Highlights
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Pull Request Functional Test Report for #5806 / 2511050Virtual Devices
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Code Review
This pull request refactors the traceroute packet-in tests to eliminate static sleeps by implementing real-time state detection via gnmi.Watch and .Await(t). It replaces duration-based traffic generation with a target packet count mechanism and removes redundant OTG configuration and protocol start steps. The review feedback recommends removing a redundant StartProtocols call in testTraffic to prevent protocol session flaps, and using t.Fatalf instead of t.Errorf when traffic fails to reach the target to fail fast.
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Code Review
This pull request refactors the traceroute packet-in tests to eliminate static sleeps, aligning with the repository style guide. Specifically, it replaces static time.Sleep calls with otgutils.WaitForARP for neighbor resolution and utilizes gnmi.Watch with .Await to dynamically wait for traffic flows to reach target packet counts. Redundant configuration pushes and protocol starts have also been cleaned up. I have no additional feedback to provide as these changes perfectly follow the performance and execution optimization guidelines.
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… telemetry watch to reduce test execution time Refactor traffic waiting logic in to use on OTG telemetry counters instead of a fixed . This allows test cases to finish dynamically as soon as the target packet count (500 packets) is transmitted, significantly reducing total test execution time. In addition, cleaned up redundant , , and calls in and , ensuring OTG configuration and capture state are pushed once in after all flows are attached. - Replaced fixed sleep with on with an loop. - Cleaned up redundant OTG config push and protocol start calls.
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traceroute_packetin_with_vrf_selection_test: Replace fixed sleep with telemetry watch to reduce test execution time
Refactor traffic waiting logic in to use on OTG telemetry counters instead of a fixed . This allows test cases to finish dynamically as soon as the target packet count (500 packets) is transmitted, significantly reducing total test execution time. In addition, cleaned up redundant , , and calls in and , ensuring OTG configuration and capture state are pushed once in after all flows are attached.