Michael Comella

@ionutbedregeanu Which device did you run on? On fenix on a Moto G5, we see a typical range of about 20ms and, since runs aren't usually on the extremes, the...

The Firefox Profiler can capture start up from the time Gecko starts and onward: see [these instructions](https://profiler.firefox.com/docs/#/./guide-startup-shutdown?id=firefox-for-android). Since the regression comes from a GeckoView upgrade, there is a good chance...

@ionutbedregeanu Our nightly runs only test cold start ups but this profile doesn't appear to be of a cold start up. In that case, you'd see the main thread maxed...

> Unfortunately I don't have a device with an android version < 11 and I can't set the permissions to [capture the profile using the Debug API](https://wiki.mozilla.org/Performance/Fenix/Debug_API#Usage_for_start_up) You don't need...

I find the Profiler Compare View to be complex to navigate and I've only rarely found it more intuitive than by comparing two profiles by switching quickly between each profile...

@Mugurell From your previous comment https://github.com/mozilla-mobile/focus-android/issues/6923#issuecomment-1209002708, we can conclude the regression occurred due to a GV update. As you point out, the easiest way to find the root cause of...

Triage: jonalmeida suggested we landed the Sentry SDK on that day so that's probably what changed.

Triage: Jonalmeida said they'd do a manual bisection.

We're seeing a trend upwards in both VIEW and MAIN: it's unclear if it's related to Sentry or another regression. Since there's no clear point of "regression", I'm going to...

If you wanted to continue debugging, you can take a profile before the change and after the change and compare to see what's different. Since the Firefox Profiler doesn't start...