1127757 - [Flame][Loop]When you invoke the loop call function, the CPU usage reaches 40%.

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Gaia::Loop, defect)

Description

[Lance（leave from Mozilla）]

Attachment: Flame_21_system-info.txt

[1.Description]:
According to 1104151, this bug is filed.
[Flame 2.1 & 2.2][Market Custom Framework]When you use Loop to make a video call, the CPU usage reaches 40%.

Found time:
Flame 2.1: 3:16
Flame 2.2: 3:13

See attachment:
Flame 2.1: Flame_21_system-info.txt and logcat_316.txt
Flame 2.2: Flame_22_system-info.txt and logcat_313.txt

[2.Testing Steps]: 
1. Use USB to connect device with PC .
2. Launch Loop client app and establish video call between Flame
3. During video call, use "adb shell top -m 5" to check CPU usage.

[3.Expected Result]: 
3.When you use Loop call, the CPU usage should be rational.

[4.Actual Result]: 
3.The CPU usage reaches 40%.

[5.Reproduction build]: 
Flame 2.1 version:
Gaia-Rev        9df43e6e696da43b6a1433283dc5b155987747bc
Gecko-Rev       https://hg.mozilla.org/releases/mozilla-b2g34_v2_1/rev/095a46f32cd4
Build-ID        20150129003733
Version         34.0
Device-Name     flame
FW-Release      4.4.2
FW-Incremental  eng.cltbld.20150129.041104
FW-Date         Thu Jan 29 04:11:14 EST 2015
Bootloader      L1TC000118D0

Flame 2.2 version:
Gaia-Rev        6e494f1d2676d231abba7dcc2e2822d1170d2d02
Gecko-Rev       https://hg.mozilla.org/releases/mozilla-b2g37_v2_2/rev/5e6fac01a72f
Build-ID        20150129003432
Version         37.0a2
Device-Name     flame
FW-Release      4.4.2
FW-Incremental  eng.cltbld.20150129.042943
FW-Date         Thu Jan 29 04:29:53 EST 2015
Bootloader      L1TC000118D0

[6.Reproduction Frequency]: 
Always Recurrence,5/5

[7.TCID]: 
Free Test

Comment 1

[Lance（leave from Mozilla）]

Attachment: Flame_22_system-info.txt

Comment 2

[Lance（leave from Mozilla）]

Attachment: logcat_313.txt

Comment 3

[Lance（leave from Mozilla）]

Attachment: logcat_316.txt

Comment 4

[Maria Angeles Oteo (:oteo)]

Oscar, can you have a look at it?

Comment 5

[Oscar Patiño González]

My first tests done on v2.1 and v2.2 verify that Hello on mobile is consuming that 40% cpu usage. Checking the different threads I couldn't see anything out of place: video encoding and decoding thread are at a low cpu usage and it seems that main Hello thread keeps relatively low 4%.
I will try to dive into looking for performance issues capturing some profiles and viewing them in Cleopatra tool.

Comment 6

[Maria Angeles Oteo (:oteo)]

[Tracking Requested - why for this release]:

Comment 7

[BMO Automation]

Firefox OS is not being worked on