Issue 1176095 in chromium: Freezing Chrome Browser on Android device while using scanning functions

[manwarullah via monorail]

Updates:
Cc: manwa...@chromium.org web-bl...@chromium.org
Labels: TE-NeedsTriageFromMTV

Comment #3 on issue 1176095 by manwa...@chromium.org: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c3

As per C#0,the issue needs to be tested using Bluetooth Devices and we don't have to test this issue from our end.Hence, routing it to MTV for further triaging.
If the device is not available.kindly help in triage further.

Thanks...!!

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[jameshollyer via monorail]

Updates:
Owner: cmum...@chromium.org
Status: Assigned

Comment #4 on issue 1176095 by jamesh...@google.com: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c4

Assigning to Chris to do some memory analysis.

@reporter how many bluetooth do you typically encounter while doing this?

[jakub133 via monorail]

Comment #5 on issue 1176095 by jaku...@gmail.com: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c5

We were doing some test when there was around 40 bluetooth devices that was discovered by tablet and in that case the problem occurs within 2-3minutes.
Also in another location we had around 15-20 bluetooth devices, and it was working for a longer time, but after 30-40 minutes same error occurs.
Only solution was to force close chrome browser and open it again, or wait for a very long period of time

[cmumford via monorail]

Updates:
Status: Started

Comment #6 on issue 1176095 by cmum...@chromium.org: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c6

jakab133@ thx for the feedback. Seeing if I can reproduce.

Alsop, can you navigate to chrome://crashes and report any crash ID's which you think occurred during this scan. This will be helpful if I cannot reproduce myself.

[cmumford via monorail]

Updates:
Cc: cmum...@chromium.org
Labels: Needs-Feedback
Owner: ----
Status: Unconfirmed

Comment #7 on issue 1176095 by cmum...@chromium.org: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c7

jakab133@, I only have a single device for testing: a Pixel 2. I followed the reproduction steps and was unable to get a crash or slowdown. I only have 11 Bluetooth devices in range, so if there is a quadratic implementation somewhere then maybe my test wouldn't hit a problem. Hopefully you can get a crash ID. Also, I put my device into dev-mode and ran the following script to log memory consumption on the device:

#!/bin/sh

while [ 1 ]
do
adb shell vmstat >> vmstat.log
sleep 5
done

Memory consumption is stable. I did several tests over two hours. Can you run the above script and see if your device is consuming an increasing amount of RAM?

I am returning this bug back to unconfirmed, but will respond if you have any feedback.

[jakub133 via monorail]

Comment #8 on issue 1176095 by jaku...@gmail.com: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c8

@cmumford, thank you for your time. Tomorrow I'll be able to check it, and send you crash ID if possible.
I was monitoring ram, cpu usage, and for the whole time CPU usage was around 50-75% and RAM comsumption was around 40-50% ( 1.7GB of out 4GB)

[sheriffbot via monorail]

Updates:
Labels: -Needs-Feedback

Comment #9 on issue 1176095 by sheriffbot: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c9

Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

[jakub133 via monorail]

Comment #11 on issue 1176095 by jaku...@gmail.com: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c11

When there is so many devices, pairing window is being slowing down a lot (maybe it is connected). After closing a window (and processing data) everything start to work until window is opened again). I have send report from send feedback and crash from today.

Uploaded crash ID report: 318d745092781418

Attachments:
freeze_one_1.mp4 2.5 MB

[sheriffbot via monorail]

Updates:
Cc: mattre...@google.com
Labels: -Needs-Feedback

Comment #12 on issue 1176095 by sheriffbot: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c12

Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

[jakub133 via monorail]

Comment #13 on issue 1176095 by jaku...@gmail.com: Freezing Chrome Browser on Android device while using scanning functions
https://bugs.chromium.org/p/chromium/issues/detail?id=1176095#c13

Also adding a small tracefile of chrome://bluetooth-internals (At the beginning the scanning was enablend and disabled after 6-7 seconds of working), then it was disabled are we are still receving advertisement signals even so it is disabled (for around a minute).

Attachments:
trace_beacons_.json.gz 8.4 MB