Open Bug 1572253 Opened 3 months ago Updated 2 months ago

Console messages are slow to reflow

Categories

(Core :: Layout, defect, P3)

defect

Tracking

()

People

(Reporter: Harald, Unassigned, NeedInfo)

References

(Blocks 2 open bugs)

Details

Follow up from bug 1571644, see STR for the scenario.

:dholbert recommended to file a bug to investigate the reflow performance for Console in https://bugzilla.mozilla.org/show_bug.cgi?id=1571644#c4

Dan's profile: https://perfht.ml/2TkBrze , reflows taking 100-200ms

Note that the reflow on hover was fixed in Bug 1571349

The issue can be still triggered by simple switching away and back to the Console

  1. open a first tab on https://sugared-oil.glitch.me/ (this page contains ~2000 CSS warnings, CSS warnings seem much heavier to render than normal messages)
  2. Switch to Debugger and back to Console …

AR: 500ms+ reflow delay

https://perfht.ml/2M98B3Q

The priority flag is not set for this bug.
:pbro, could you have a look please?

For more information, please visit auto_nag documentation.

Flags: needinfo?(pbrosset)

moving to layout as people in the team might have a better idea what's happening and if this can be fixed

Component: General → Layout
Flags: needinfo?(pbrosset)
Product: DevTools → Core
Priority: -- → P3
See Also: → 1580862
See Also: → 1571286

Yeah, I'll try. Toggling needinfo to hopefully remind myself.

Flags: needinfo?(dholbert)
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