See bug 1344302 comment 1.

Leaving this in the Photon backlog (for bug 1344302), but I'm not sure if this got markef qf:- because it's not really all that important? Or just isn't platform work? If it's not notable, we should maybe just close it?

I talked to Naveed about this. Apparently, qf- means "Triaged. Not a Quantum Flow bug. We don't care about this from a performance perspective for the 57 effort." So it sounds like we should close this out - though I want to make sure we're clear on why. This view of the profile that ehsan is referring to is, I believe, illustrative: https://perf-html.io/public/008281d4c8917aa11d4b7d59f97b2fcee471be7d/calltree/?callTreeFilters=postfixjs-Rl&range=3.5175_13.8879&thread=0 123ms over the course of a 14s profile isn't huge, but it's also not great for what should be a really cheap operation. Was this qf-'d in triage for a reason we're not seeing here?

Uh, whoops, didn't mean to close this as INVALID.

I see FX_TAB_ANIM_ANY_FRAME_INTERVAL_MS for instance doesn't have alert_emails set. Is anyone actively keeping track of these probes? Looks like they're more than four years old -- what's their track record of catching regressions?

Good question. digitarald, do you know if anybody is paying attention to that probe?

I looked at FX_TAB_ANIM_ANY_FRAME_INTERVAL_MS and found it only focused on the easiest path (1/2 tabs), not measuring perceived performance. Given that all animations should be on the compositor in the future, I don't see the need for having this. Marking qf:p3 as it impacts performance and is a low hanging fruit.

I also checked that tart doesn't depend on this code.

Comment on attachment 8858650 [details] Bug 1345315 - Remove obsolete tab animation telemetry. https://reviewboard.mozilla.org/r/130624/#review133940 Yeah, as the new Photon tab animation is going to be on the GPU, I don't see this being very useful anymore. Thanks dao!

We're sorry, Autoland could not rebase your commits for you automatically. Please manually rebase your commits and try again. hg error in cmd: hg rebase -s 48dafd25edaf -d 4e489e84adfd: rebasing 390561:48dafd25edaf "Bug 1345315 - Remove obsolete tab animation telemetry. r=mconley" (tip) merging browser/base/content/tabbrowser.xml merging toolkit/components/telemetry/Histograms.json warning: conflicts while merging browser/base/content/tabbrowser.xml! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue)

Pushed by dgottwald@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/1685702d2d6a Remove obsolete tab animation telemetry. r=mconley