Chrome has something similar behind an experimental pref (hit shift 6 times), "Display Input Events on Timeline". May or may not make it to release in this form. Not an intent to implement, but a bug tracking discussions on exploring if we want something similar. Chrome Screenshot: http://i.imgur.com/rUhlF6T.png This one’s pretty cool. It adds another row to the timeline overview (top row in picture), with yellow notches for input events. The interesting stuff is, these markers become purple if they cause a layout. As for the darker orange marker in the that row, I’m not sure why that is — possibly because there’s GC during that event, possibly because it’s huge, or possibly because this is the most “costly function”. (Looking at a few other profiles, it seems that this is when a GC occurs inside of an input event… MAYBE)
Triaging. Filter on ADRENOCORTICOTROPIC (yes).
Priority: -- → P3
Version: 37 Branch → unspecified
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