Improve Live Debugger benchmark comment guidance

[watson]

Summary

• explain the Tiny and Hot benchmark workloads and how they relate to real applications
• link the workload documentation from the PR benchmark summary
• prioritize benchmark results while moving supporting metadata below the table
• keep raw samples folded on successful runs and highlight them when failures occur

Testing

• yarn test:unit packages/tests/src/bench/liveDebuggerRuntime/reporter/benchReporter.test.ts --runInBand
• yarn lint packages/tests/src/bench/liveDebuggerRuntime/reporter/benchReporter.ts packages/tests/src/bench/liveDebuggerRuntime/reporter/benchReporter.test.ts
• yarn workspace @dd/tests typecheck
• yarn cli integrity

[github-actions]

Live Debugger Runtime Benchmark

SDK-loaded dormant-probe runtime overhead, measured against an uninstrumented bundle in the same browser session.

Browser	Workload	Quality	Per-call overhead upper
chrome	Hot	clean	<= 4.39 ns
chrome	Tiny	clean	<= 0.36 ns
firefox	Hot	clean	<= 10.01 ns
firefox	Tiny	clean	<= 0.36 ns
safari	Hot	clean	<= 5.33 ns
safari	Tiny	clean	<= 0.98 ns

What do the Tiny and Hot workloads represent?

Browser Debugger SDK: 7.12.0 · built 2026-09-03 · S3 ETag 59df9831

Full diagnostics

browser  workload  quality  per-call overhead upper  overhead upper          95% CI        A/A diag        block CI  acf(1)   baseline  instrumented                         samples
-------  --------  -------  -----------------------  --------------  --------------  --------------  --------------  ------  ---------  ------------  ------------------------------
chrome   Hot       clean                 <= 4.39 ns        <= 7.90%   4.33..4.38 ns  -0.00..0.02 ns   4.32..4.39 ns   -0.04  50.658 ms     54.627 ms   102 (trim 20%, outliers 2.9%)
chrome   Tiny      clean                 <= 0.36 ns        <= 4.37%   0.34..0.36 ns  -0.01..0.03 ns   0.34..0.36 ns   -0.20  53.698 ms     55.973 ms  102 (trim 20%, outliers 11.8%)
firefox  Hot       clean                <= 10.01 ns       <= 36.51%  9.99..10.01 ns  -0.00..0.01 ns  9.99..10.01 ns    0.05  40.530 ms     55.320 ms   102 (trim 20%, outliers 7.8%)
firefox  Tiny      clean                 <= 0.36 ns        <= 2.32%   0.35..0.36 ns  -0.00..0.00 ns   0.35..0.36 ns    0.03  53.220 ms     54.440 ms   102 (trim 20%, outliers 6.9%)
safari   Hot       clean                 <= 5.33 ns       <= 19.64%   5.31..5.33 ns  -0.01..0.00 ns   5.32..5.33 ns    0.03  46.310 ms     55.400 ms   102 (trim 20%, outliers 3.9%)
safari   Tiny      clean                 <= 0.98 ns       <= 23.17%   0.78..0.92 ns  -0.00..0.00 ns   0.65..0.98 ns    0.63  46.400 ms     56.510 ms   102 (trim 20%, outliers 2.0%)

Raw samples are in the live-debugger-runtime-bench-results artifact.