1948021 - 29 - 2.32% damp custom.netmonitor.close.DAMP / netmonitor-metrics + 5 more (Linux, OSX, Windows) regression on Fri February 7 2025

Status: RESOLVED WONTFIX

(DevTools :: Netmonitor, defect)

Description

[Treeherder Bug Filer]

Perfherder has detected a devtools performance regression from push e9742b2e36d928f3a76c3ff215b4dda8b3ca1e12. As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

Ratio	Test	Platform	Options	Absolute values (old vs new)
29%	damp custom.netmonitor.close.DAMP	macosx1470-64-shippable	e10s fission stylo webrender	20.41 -> 26.32
5%	damp custom.netmonitor.bigdatarequests.requestsFinished.DAMP	windows11-64-shippable-qr	e10s fission stylo webrender	1,081.21 -> 1,138.43
5%	damp custom.netmonitor.manyrequests.requestsFinished.DAMP	macosx1470-64-shippable	e10s fission stylo webrender	2,483.51 -> 2,596.92
4%	damp custom.netmonitor.bigdatarequests.navigate.DAMP	windows11-64-shippable-qr	e10s fission stylo webrender	980.31 -> 1,019.08
3%	damp custom.netmonitor.manyrequests.requestsFinished.DAMP	linux1804-64-shippable-qr	e10s fission stylo webrender	2,899.47 -> 2,991.00
3%	damp custom.netmonitor.manyrequests.requestsFinished.DAMP	windows11-64-shippable-qr	e10s fission stylo webrender	1,285.13 -> 1,324.55
2%	netmonitor-metrics	linux1804-64-qr		3,503,377.00 -> 3,584,483.00

Improvements:

Ratio	Test	Platform	Options	Absolute values (old vs new)
3%	damp simple.netmonitor.close.DAMP	windows11-64-shippable-qr	e10s fission stylo webrender	4.49 -> 4.34
3%	netmonitor-metrics	linux1804-64-qr		3,614,661.46 -> 3,523,653.50

Details of the alert can be found in the alert summary, including links to graphs and comparisons for each of the affected tests. Please follow our guide to handling regression bugs and let us know your plans within 3 business days, or the patch(es) may be backed out in accordance with our regression policy.

If you need the profiling jobs you can trigger them yourself from treeherder job view or ask a sheriff to do that for you.

You can run all of these tests on try with ./mach try perf --alert 43788

The following documentation link provides more information about this command.

For more information on performance sheriffing please see our FAQ.

If you have any questions, please do not hesitate to reach out to [e-mail].

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1849920

Comment 2

[Julian Descottes [:jdescottes]]

Overall the regression is not too surprising, there is slightly more complexity to display the requests list, but I will still try to see if one patch in particular is responsible for the regression.

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

It has been over 7 days with no activity on this performance regression.

:jdescottes, since you are the author of the regressor, bug 1849920, which triggered this performance alert, could you please provide a progress update?

If this regression is something that fixes a bug, changes the baseline of the regression metrics, or otherwise will not be fixed, please consider closing it as WONTFIX. See this documentation for more information on how to handle regressions.

For additional information/help, please needinfo the performance sheriff who filed this alert (they can be found in comment #0), or reach out in #perftest, or #perfsheriffs on Element.

For more information, please visit BugBot documentation.

Comment 4

[Julian Descottes [:jdescottes]]

Ok well I'm closing as WONTFIX and filing another bug to investigate.