[apmbench] Add trace only benchmarks (backport #15434) #15602
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* Add BenchmarkTracesAgentNodeJS * Add more agents * Update comment * Exclude BenchmarkTraces* from scheduled runs to avoid skewing nightly results * Use loadgen.NewEventHandler (cherry picked from commit 9ad3be4)
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carsonip
approved these changes
Feb 7, 2025
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Motivation/summary
Existing benchmarks are a mix of logs, metrics and traces (sampled and unsampled transactions). Using these benchmarks will introduce noise in benchmark results to assess TBS performance. It will create strange results where the slower the disk, the higher the throughput, because traces ingestion slows and ingestion of other events speeds up to take up the CPU time spared by slow disk, making benchmark results very hard to interpret.
Create a special benchmark with only sampled traces to accurately benchmark traces. Benchmark files are obtained by e.g.
grep -E '^{"span|^{"transaction|^{"meta' apm-nodejs-3.29.0.ndjson > apm-nodejs-traces-3.29.0.ndjsonWe may want to revert this in the future to add these files to upstream apm-perf and bump apm-server to use upstream apm-perf e.g. #15379 . It is currently using a very old apm-perf.
Checklist
For functional changes, consider:
How to test these changes
Related issues
Useful to benchmark #15235 and related TBS optimizations
This is an automatic backport of pull request #15434 done by [Mergify](https://mergify.com).