1603656 - Task Manager(about:performance) doesn't display some pages

Status: RESOLVED WONTFIX

(Toolkit :: Performance Monitoring, defect, P5)

Description

[garywill]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0

Steps to reproduce:

Open about:performance
Open https://world.taobao.com/
Click some good. It open a new tab for the good.

Actual results:

The task manager(about:performance) displays the good's page only for a few seconds, then it disappear from the list.

You can click more goods in the taobao home page, then close some page or close the home page, and find out more odd behavior in the task manager list.

I did some debug in aboutPerformance.js.
tabFinder is fine. I guess problem is on State's buffer.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The priority flag is not set for this bug.
:tarek, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 3

[madwi]

i don't know if it's related, but i have problems when my firefox is running for a long time.
I have undreds of tabs open and the about:performance page is randomly showing only my plugins, then a few seconds later, also show my tabs, then again only my plugins etc...

Comment 4

[garywill]

ChromeUtils.requestPerformanceMetrics() didn't return correct content.

A quick test seemed that 78 beta has fixed

Comment 5

[garywill]

(In reply to garywill from comment #4)
On 78.1.0 still see some missed tab. This bug is not fixed yet.

Comment 6

[Florian Quèze [:florian]]

Mass closing about:performance bugs as about:performance has been removed in bug 1836191 in favor of about:processes which displays more accurate data. If this bug still applies to about:processes, feel free to reopen and change the summary.