1072750 - [Perf][Usage app][Cost Contorl] Performance regression for Cost Control App

Status: RESOLVED DUPLICATE of bug 1072621

(Firefox OS Graveyard :: Gaia::Cost Control, defect)

Description

[Shing Lyu [:shinglyu]]

Attachment: Datazilla Report

#Summary: Performance regression found in the Cost Control App since Sep 20. 

Datazilla Report: http://mzl.la/1DwXSU3

# Environment
  * Firefox OS 2.1
  * Flame 319mb

See also the "Depends on" bugs for possible cause of this issue.

Comment 1

[Shing Lyu [:shinglyu]]

More details:

# Steps
  * See Datazilla: http://mzl.la/1DwXSU3
  
  * Last good build:
    Gaia Revision: 689c4ad4d8c3e4aa
    Gecko Revision: 2c6e3261c47b
  
  * First bad build:
    Gaia Revision: 05f7d41f53339f9b
    Gecko Revision: 2c6e3261c47b

# Expected
  Startup time remains steady.

# Actual
  Startup time jumps from 2530ms to 2776ms.

# Reproduction Frequency

Comment 2

[Shing Lyu [:shinglyu]]

My initial guess is that this is related to Bug 1068454.  After the Cost Control App opens, the UI loads in the following order: 

Bottom half: No data used message -> "Mobile usage" and "Wi-Fi usage" text -> figure in the upper half -> No data used message is replaced with a list of per-app usage.

I guess the b2gperf tools wait until the per-app usage list, but if no mobile data were used, the UI is considered loaded when the no data used message is present. 

But I dont' know why this happens a few days after the Gaia reversion 728132e3 landed. I looked into 689c4ad4 and 05f7d41f but found no clue.

Comment 3

[Marcelino Veiga Tuimil [:sonmarce]]

Would this bug be a duplicate of bug 1072621?