Identify bottleneck for fenix

mozilla-mobile / perf-frontend-issues

A repository to hold issues related to front-end mobile application performance.

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Identify bottleneck for fenix #159

Closed MarcLeclair closed 4 years ago

MarcLeclair commented 4 years ago

Identify the bottleneck for Fenix to better understand how our changes impact start up as a whole

MarcLeclair commented 4 years ago

First finding: When hogging CPU from another app, Fenix startup seems to be delayed by ~150% (975ms to 2.5s on G5+)

Action items: Profile with CPU hogged

MarcLeclair commented 4 years ago

Increase CPU usage was found to affect startup, but comparing profile A (no change in cpu usage) to profile B (increased cpu usage) showed that the two profiles were relatively the same in terms of % per method call.