581178 - Opening many tabs at once completely hangs the browser

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[juan becerra [:juanb]]

While testing Fx4b2, when I tried opening the default news feed (BBC latest headlines) all in tabs, my browser quickly stops responding, and my machine eventually beachballs for a few seconds. The tabs never finish loading. The sad plugin face shows in places where Flash should show, and I have to kill the browser.

I can see a similar thing on XP. Both the firefox and the plugin-container process take up a lot of CPU and memory, and it stops responding. Eventually I get a dialog:

"Script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: http://node1.bbcimg.co.uk/glow/glow/1.7.3/core/core.js:19"

But it still doesn't respond.

Comment 1

[Dietrich Ayala (:dietrich)]

Does this happen when opening other Livemarks or bookmark folders of similar size? or is it specific to the BBC feed?

Also, your bug summary does not match your description in comment #0, updating.

Comment 2

[(no longer active)]

This works for me (well, we're opening 70+ tabs at the same time, it takes some time!).

This bug report would have been much more useful with the actual URLs.

Comment 3

[Johnathan Nightingale [:johnath]]

Covered in triage - we think this is expected (though disappointing) behaviour - asking the browser to open a ton of stuff at once will be slow until E10s.