Agent TODO

[gnurizen]

A list of short term things todo, in priority order:

• Get CUDA mock tests working in CI and/or get usdt tests to cover arm bracket syntax
• Deflake and speed up node tests
• PC sampling data collection
• PC sampling symbolification work if any
• PC sampling debuginfo/symbol artifact uploading
• Trim Distro QEMU tests down to the bare minimum
• Fix golabels differences with upstream
• Custom labels emergent issues
• Add sampling/probabilistic knob to control overhead
• Fix node tests so builds are green, fork "latest" test into separate task
• Upstream stuff, node custom labels and usdt stuff probably most important
• Integrate gpu-metrics-agent with parca-agent

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These are unordered, let's discuss the importance as a team

• Unwind past runtime.morestack in Go #3123
• Clean up logging -- especially things like time="2025-12-14T13:49:59-07:00" level=error msg="Failed to load /home/brennan/go_test/go_test (0x87d1220a8ee6d467): symbol hash not present" . Anything logged as error should be a real problem.
• Collaborate with upstream V8 to fix their broken symbol reporting code (so that we can stop doing custom work on each v8 version)
• Set up alerts for aborted frames in our own infrastructure
• Agent not reporting correct sampling rate under load #3125