1603470 - Firefox is stuck on quora.com

Status: RESOLVED DUPLICATE of bug 1603483

(Firefox :: Messaging System, defect, P1)

Description

[Sankha Narayan Guria [:sankha]]

In the last few days I have been seeing the browser getting intermittently when browsing the web with a spinning beachball. The rendered area and the browser chrome don't respond to my user interactions. This happened on multiple websites - but happened consistently on Quora, so I took a profile with the Gecko profiler.

The profile can be found at https://perfht.ml/35b1TjP

The majority chunk of the time is spent in ASRouter.jsm so I filed this bug in Messaging System component. Sorry, if there was a better component to file this in, feel free to move it.

Comment 1

[Andrei Oprea [:andreio]]

Hey, thank you for reporting this. It's the correct component.
We would want some more details to help debug this:

Can you please enable the Browser Toolbox (details here https://developer.mozilla.org/en-US/docs/Tools/Browser_Toolbox)
And then run this code snippet and then paste the content in this bug?

Cu.import("resource://activity-stream/lib/ASRouter.jsm");
JSON.stringify(ASRouter.state, null, 2)

The debug information might contain information about the messages you have seen: snippets on the new tab page, messages from firefox etc. If you are not comfortable sharing this information can you please mention the number of items it reports when you evaluate ASRouter.state:

messages: Array(357) 
messageBlockList: Array(6) 

(examples from my personal profile)

Thanks!

Comment 2

[Sankha Narayan Guria [:sankha]]

Attachment: asrouter_state.json

I am attaching the complete ASRouter.state JSON here.

Comment 3

[Tim Spurway [:tspurway]]

:sankha, are you seeing an improvement? We deployed a fix a few days ago.

Comment 4

[Sankha Narayan Guria [:sankha]]

Hi,

Yes, responsiveness on websites are back to normal. Thank you for such a quick fix.

Sorry for getting back so late, the needinfo request got stuck in my bugzilla filter.

Comment 5

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

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

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