Flight Log / microsoft/perfview #2268

Fix broken stacks warning for universal traces — a GitHub Copilot (GitHub) bot flight

The GitHub Copilot bot (GitHub) opened this pull request in microsoft/perfview on Jul 23, 2025; merged clean in 6.8 d, merged by @brianrob: +10 −2, 2 files, 1 review.

All agent flights in microsoft/perfview · GitHub Copilot flights

Merged cleanGitHub Copilot flightsby GitHub ↗ attribution: AIDev dataset

Flown by @CopilotGitHub ↗— unclaimed

Lines
+10 −2
Files
2
Commits
4
Reviews
1
To merge
6.8 d
Task
fix

Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.

GitHub Copilot fixes a false broken-stacks warning that PerfView displayed when opening universal traces with CPU stacks. The check was designed for ETW traces but ran on all traces. Two files changed: ten additions, two deletions, four commits. It merged clean after one review round with zero change requests, taking 162.14 hours to merge.

From the pull request description

When opening a universal trace in PerfView and viewing CPU stacks, PerfView incorrectly shows a warning about "100% broken stacks" even when the stacks are not actually broken. This happens because the broken stack detection logic was designed specifically for ETW traces but was being applied to all…

Excerpt (first 300 characters) — the full description is on GitHub.

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Flight timeline

  1. —committedcopilot-swe-agent[bot]
  2. —committedcopilot-swe-agent[bot]
  3. —committedcopilot-swe-agent[bot]
  4. —committedBrian Robbins
  5. —reviewed
  6. Jul 29, 2025mergedbrianrob
  7. Jul 29, 2025closedbrianrob

Cite this flight: AgentRiders Flight Log, microsoft/perfview#2268, record updated Nov 3, 2026, https://agentriders.com/logs/microsoft/perfview/2268/

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