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docs(flaky-tests): document slow test monitor percentile settings and events tab#126

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docs(flaky-tests): document slow test monitor percentile settings and events tab#126
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sam-gutentag/slow-test-monitor-percentile-events

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@samgutentag samgutentag commented May 28, 2026

Summary

  • Adds a Percentile setting to the configuration table, explaining how p50 vs p95 affect detection sensitivity (p50 is stricter -- requires more slow runs; p95 catches sporadic slowness).
  • Updates "How It Works" to say "percentile duration" instead of "average duration", which matches the actual implementation.
  • Notes that the threshold comparison uses >=, consistent with failure rate monitors (trunk-io/trunk2#4030).
  • Documents that slow-test detection evidence now appears in the Events tab on the test details page (trunk-io/trunk2#4024).
  • Adds the 1000-test preview cap to the Window and Sample Size section.

Covers: trunk-io/trunk2#4024 and trunk-io/trunk2#4030, shipped in v189.

Test plan

  • Verify prose renders correctly on Mintlify preview
  • Confirm percentile semantics match the slow-test-monitor-dialog.tsx UI labels
  • Check Events tab behavior matches description

Co-Authored-By: Claude noreply@anthropic.com

Generated by Claude Code

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mintlify Bot commented May 28, 2026 •
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samgutentag commented May 28, 2026 •
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Verification status (2026-05-29): live

Verified: customers can use this. Ready to publish.

  • Flag state: LaunchDarkly not consulted (no feature flag gates these changes).
  • Eng PR: trunk-io/trunk2#4024 (merged 2026-05-27), trunk-io/trunk2#4030 (merged 2026-05-27). Both merge commits intact on main.
  • Flag: none (ungated bug fixes and behavior changes).
  • Signals: both eng PRs merged to main; no feature flags found in PR bodies or diffs; changes are UI corrections and a query-operator fix with no rollout gate.

Mark ready and merge when docs review is complete.

@samgutentag samgutentag marked this pull request as ready for review May 28, 2026 18:14
@samgutentag samgutentag added the ready to merge Verify docs PR: customers can use this. Ready to publish. label May 28, 2026 — with Claude
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samgutentag commented May 31, 2026

Verification status (May 31, 2026): live

Both eng PRs have merged; the slow-test monitor feature is in production.

  • Flag state: not consulted
  • Eng PRs: trunk2#4024 (merged), trunk2#4030 (merged)
  • Flag: none
  • Signals: feature fully shipped; docs are accurate as written

Next action: merge this PR.

Generated by Claude Code

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samgutentag commented Jun 1, 2026 •
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Verification status (2026-06-01): live

Verified: customers can use this. Ready to publish.

  • Flag state: LaunchDarkly not consulted (no feature flag gates these changes; neither eng PR diff references useFeatureFlag/useFlag/LaunchDarkly).
  • Eng PRs: trunk-io/trunk2#4024 (merged 2026-05-27), trunk-io/trunk2#4030 (merged 2026-05-27). Both merge commits confirmed intact on main this sweep. Shipped in v189.
  • Flag: none (ungated UI corrections and a query-operator change).
  • Signals: both eng PRs merged to main, no rollout gate.

Unchanged from prior sweep: still live. PR is currently CONFLICTING (needs rebase); does not affect this verdict.

Generated by Claude Code

@claude @samgutentag
docs(flaky-tests): add percentile explanation and events tab note to …
8a25368 
…slow test monitor

Documents the percentile setting for the slow test monitor (p50 vs p95
semantics), updates detection threshold language to reflect the >= comparison,
adds the 1000-test preview cap, and notes that detection evidence now appears
in the Events tab on the test details page.

Covers trunk-io/trunk2#4024 and trunk-io/trunk2#4030 (shipped in v189).

Co-Authored-By: Claude <noreply@anthropic.com>
@samgutentag samgutentag force-pushed the sam-gutentag/slow-test-monitor-percentile-events branch from e52a769 to 8a25368 Compare June 1, 2026 20:32
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