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Issue 819732 link

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Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug



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DevTools Heap snapshot does not show Detached DOM tree

Reported by mvishnu0...@gmail.com, Mar 7 2018

Issue description

UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3364.0 Safari/537.36

Steps to reproduce the problem:
1.Take Heap snapshot using chrome canary 67.  

What is the expected behavior?

What went wrong?
chrome canary 67 didn't show Detached DOM tree in V8 heap snapshot for a gmail website.But Detached DOM was seen in V8 heap snapshot of chrome 64.

Did this work before? N/A 

Chrome version: 67.0.3364.0  Channel: canary
OS Version: OS X 10.13.3
Flash Version:
 
Labels: Needs-Triage-M67
Cc: vamshi.kommuri@chromium.org
Labels: Needs-Feedback Triaged-ET
Thanks for filing the issue!

Checked the issue on reported chrome version 67.0.3364.0 using Mac 10.13.1 with the below mentioned steps.
1. Launched Chrome
2. Opened gmail account
3. Devtools->Memory->Heapsnap shot-> Take snapshot
Attaching the screen cast of the same. As mentioned in comment#0 where there is no issue in M64, we even checked on it.

@Reporter: As ET team is not very clear about "Detached DOM tree in V8 heap snapshot", it would be highly helpful if provided with the screenshots of good and bad behaviour, which helps us to triage the issue in a better.
819732.mp4
4.5 MB View Download
Uploading the video of Chrome 65 and Chrome 67's behaviour of heap snapshot. 
Chrome 65 shows Detached DOM tree while chrome 67 doesn't show Detached DOM even though the website contains detached DOMs in it.
Detached DOM.mov
3.7 MB View Download
Project Member

Comment 4 by sheriffbot@chromium.org, Mar 9 2018

Labels: -Needs-Feedback
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

Comment 5 by caseq@chromium.org, Mar 11 2018

Components: -Platform>DevTools Platform>DevTools>Performance
Owner: alph@chromium.org
Status: Assigned (was: Unconfirmed)
This bug also occurs on:


Google Chrome Version 66.0.3359.139 (official Build) (64-Bit) (Windows 10)

Here is a description of the "expected behaviour":

https://developers.google.com/web/tools/chrome-devtools/memory-problems/#discover_detached_dom_tree_memory_leaks_with_heap_snapshots

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