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Standalone tool for checking kernel timestamping support on Arista switches by sending real TWAMP probes and verifying which timestamp types are actually delivered (SO_TIMESTAMPNS, SO_TIMESTAMPING RX/TX software/hardware/sched). Also reports RTT statistics comparing userspace vs kernel timestamp sources.
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bgm-malbeclabs
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Mar 27, 2026
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Summary of Changes
twamp-debugCLI tool for diagnosing kernel timestamping support on Arista switchesDiff Breakdown
Single-file diagnostic tool, no tests or scaffolding.
Key files (click to expand)
tools/twamp/cmd/twamp-debug/main.go— standalone debug tool: capability probing via real sends, multi-source RTT comparison, statisticsTesting Verification
chi-dn-dzd1, verified against live TWAMP reflector on172.16.0.3:862oversw1_11_2