+++ This bug was initially created as a clone of Bug #837668 +++ We need to measure when the app is usable by the user. For that we'll need to send an event (the moment is specific to the app) to |window| that the performance test will be able to receive. The events for implementation are outlined in bug 996038.

FYI, there is already a "startup-path-done" in that one.

Bug 996038 introduces new events outlining the phases of application startup. Each of these 5 events needs to be implemented. "startup-path-done" will be changed to the relevant event outlined in 996038.

Adding to 2.0 sprint4 for discussion during planning

Taking this bug now that I have a good grasp on understanding the new startup perf events from the FM Radio app.

Eli: I flagged you for review on this as well so you can take a quick look to make sure these events look like they're being used properly. The Camera app is a much better example of using these events more effectively since we asynchronously load a fair amount of the application after the critical path is done. Diego: Also take a look to sanity check from the Camera app perspective.

Comment on attachment 8438597 [details] pull-request (master) Looks good on the performance side.

Comment on attachment 8438597 [details] pull-request (master) It looks good Justin

Landed on master: https://github.com/mozilla-b2g/gaia/commit/bfcda8438de817c5df6f096f9f3488adaa7ee452

Justin, just noticed that this one is missing an entry in the whitelist and didn't catch it with my review. Could you submit another patch for the additional whitelist entry? That patch and your existing one will needs to land in 2.0 as it is important for meeting release performance acceptance criteria [1]. https://wiki.mozilla.org/FirefoxOS/Performance/Release_Acceptance

Follow-up bug to update `whitelistedUnifiedApps` list: Bug 1024753 - [Camera] Add Camera app to whitelistedUnifiedApps Hema: Both this bug (Bug 1015385) and the follow-up (Bug 1024753) require v2.0 uplift approval according to Comment 9. Thanks!

Closing this since we have a follow-up bug to update the whitelist: Bug 1024753 - [Camera] Add Camera app to whitelistedUnifiedApps

Comment on attachment 8438597 [details] pull-request (master) See comment 9 for 2.0 approval justification: To measure and meet Release Performance Acceptance Criteria

v2.0: https://github.com/mozilla-b2g/gaia/commit/d6ea7c97416917385d140cd6dea498f50c3cc78b

Restore a line I accidentally clobbered when rebasing: v2.0: https://github.com/mozilla-b2g/gaia/commit/d69cfb4341f2a42c3de576aa099d059cf32d0380