WPE 2.38: Out of memory error while streaming any content with WebInspector open

[janani-balasubramanian-infosys]

In RPi, there is a significant increase in memory consumption of WPEThunder when Webinspector is started along with the streaming of any content. But no crash is seen because there is no limit set for WPEThunder and We were able to stream for more than 1.5 hours. But, the memory max usage rapidly increases. Below are the observations in RPi.

root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.limit_in_bytes
9223372036854771712

root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
531464192
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
544538624
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
550207488
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
561790976
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
584716288
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
620036096
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
635936768
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
646520832
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
655519744
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
695853056
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
702447616
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
711151616
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
721469440
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
737206272
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
835309568
root@raspberrypi4-64-rdk-android-mc:/sys/fs/cgroup/memory# cat memory.max_usage_in_bytes
838696960

Every memory usage values are noted within 1-2 mins.

Scenario to reproduce

1. Start any video streaming app
2. Open WebInspector
3. Play any VOD
4. Notice the memory consumption

[janani-balasubramanian-infosys]

Below is an additional observation made by making the JSC_criticalGCMemoryThreshold=0.10 .

With this change, the playback was running for almost 45 mins. In this, for the first 30 mins the memory increase was stable. But after 30 mins, the memory increase is very fast.

Image tested:

root@raspberrypi4-64-rdk-android-mc:~# cat /version.txt 
imagename:rdk-generic-mediaclient-wpe-image_FBT_TDK_nightly-20240503-dunfell_20240503043146
BRANCH=nightly-20240503-dunfell
YOCTO_VERSION=dunfell
VERSION=nightly-20240503-dunfell.05.03.24
SPIN=0
BUILD_TIME="2024-05-03 04:31:46"
WPE_WEBKIT_VERSION=2.38.4+gitAUTOINC+fc1703ed69-r4
WPEFRAMEWORK-VERSION=R4.2
Generated on Fri May 03  04:31:46 UTC 2024
JENKINS_JOB=0
JENKINS_BUILD_NUMBER=0