2074802 - 3.17 - 3.02% damp simple.inspector.open.DAMP + 1 more (Windows) regression on Wed September 16 2026

Status: RESOLVED INVALID

(DevTools :: Shared Components, defect)

Description

[Performance Sheriff Bot]

Perfherder has detected a devtools performance regression from push c71933f567ad4fef90722dc49539a89924333b36. As author of one of the patches included in that push, we need your help to address this regression.

Please acknowledge, and begin investigating this alert within 3 business days, or the patch(es) may be backed out in accordance with our regression policy.

Regression	Test	Platform	Options	Absolute values [old vs new]
3%	damp simple.inspector.open.DAMP (doc)	windows11-64-24h2-shippable	e10s fission stylo webrender	164.64 ms -> 169.86 ms
3%	damp cold.inspector.open.DAMP (doc)	windows11-64-24h2-shippable	e10s fission stylo webrender	241.33 ms -> 248.61 ms

Support & Actionable Steps

For questions, please contact [e-mail]. You can also find help on Slack (#perf-help) or Matrix (#perftest).

Action guide details:

• See the guide to handling regression bugs for investigation steps.
• Review the alert summary for affected tests, graphs, and comparisons.
• Check the PerfCompare results.
• Tests on Try: Run all tests using ./mach try perf --alert 52937 (See documentation link for details).
• Test locally: To run the tests locally use ./mach perftest 52937
• Profiling jobs: Trigger jobs from Treeherder job view or request them from [e-mail].

Comment 1

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 1860733

Comment 2

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 1860733

Comment 3

[Denis Palmeiro [:denispal]]

I don't see any real regression here when looking at the graphs.