Shako Ho Reporter
	Description • 8 years ago

Do the running time analyze for changing the font to bold
 179  100%  |- Startup::XRE_Main/
 60   33.5% |  |- nsRefreshDriver::Tick/
 35   19.6% |  |  |- PreShell::Paint/
 16   8.9%  |  |  |- PreShell::Flush (Flush_Style)/
  0    0%   |  |  |- so on/
 43    24%  |  |- Timer::Fire/
 16   8.9%  |  |- nsViewManager:DispatchEvent/
 16   8.9%  |  |  |- EventDispatcher::Dispatch/

	Jet Villegas (inactive)
	Comment 1 • 7 years ago

We're flushing Layout & painting between ticks to render the on-screen text to/from boldface. That takes some time to do vs. nothing to render.

See also bug 1271544 comment 2.

	Daniel Holbert [:dholbert]
	Comment 2 • 7 years ago

Per comment 1, it sounds like this is expected behavior. [qf-] but please renominate if I'm misunderstanding.

	Daniel Holbert [:dholbert]
	Comment 3 • 7 years ago

Resolving as INVALID, since the problem described is not a bug.

(When text is restyled to bold, it makes sense that the next refresh driver tick would take more than the baseline amount of time, and that it'd spend some time flushing the style-change & repainting.)

	(no longer active)
	Comment 4 • 7 years ago

Same comment as bug 1271544.  Please test with paintflashing turned on.