1367655 - [Input Latency] GSearch - Select First Cat Image

Status: RESOLVED WORKSFORME

(Core :: General, defect)

Description

[Walter Chen[:ypwalter][:wachen]]

STR:
1. Open images.google.com with searching for “cats”. Wait for the results to be loaded
2. Click on the first cats image in the search results

Reports: https://goo.gl/O8NGb6
Notes: https://docs.google.com/spreadsheets/d/1MsTK1FW88wuLd25A18HG2KqpjYJnvrxGM9a6MeZp35w/edit#gid=256706414

Firefox Profile and Chrome Tracing will be attached in the following.

Comment 1

[Walter Chen[:ypwalter][:wachen]]

Firefox Profile https://perfht.ml/2qmxtFZ
Chrome Tracing https://goo.gl/W5CMbY

Comment 2

[MarkYen]

Short Gecko Profile(cover only Input Lantency action):
https://perfht.ml/2qMYBy0

Comment 3

[Kan-Ru Chen [:kanru] (UTC+9)]

I'm closing this one since Firefox is already faster than or on par with Chrome in this case.

Comment 4

[Randell Jesup [:jesup] (needinfo me)]

This one (though we're as good or better than chrome, mostly) has one "interesting" bit:
https://perf-html.io/public/69f88e5a6c6ef339dfaa0442932e075f690f1bea/calltree/?implementation=js&range=1.4816_2.4332~1.7767_2.1714&thread=0
shows we're doing an update check in the middle of this.  Also interesting is the amount of time on MainThread all the cert checks take.  Thank you, NSS.

Ehsan: thoughts?  are there problems with how we're checking for addons, or how we're gathering these profiles?  And should we file a bug on NSS and update manager/etc to see if we can move some of this stuff off mainthread?  (or is there one?)

Comment 5

[(no longer active)]

Great find!  Filed bug 1373408 about the scheduling of this event.  Hopefully follow-up bugs will be filed from there...