How to detect reason for browser freeze?

Asked Sep 20 '17 at 09:26

Active Apr 15 '21 at 06:16

Viewed 2,096 times

in our team we developed a fairly large AngularJS app. A couple of days ago, we have the problem, that the browser/tab freezes on a specific action.

I sadly can't post any code, because it first a closed source project and second I have no clue what part could possibly be responsible for the freeze.

So my general question is: How can I detect the reason for a browser freeze?

Is there any loop that does not exit?
Are there suddenly too many DOM elements?

I don't even know where to start searching.

If someone needs more information that are not code relevant (I am sorry about that, but I am not allowed to share code here), then please tell me.

edited Apr 15 '21 at 06:16

asked Sep 20 '17 at 09:26

scipper

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check any backend process may be running..! – jose Sep 20 '17 at 09:28
Did you check for console errors and network tab for delayed response or pending status? – Sajal Sep 20 '17 at 09:29
Do this happen for every browser or a specific browser – Thusitha Sep 20 '17 at 09:29
@Sajal yes I did. No errors, no pending request. The interessting part is, that the console (Chrome v60 Console) seemingly is not dead. – scipper Sep 20 '17 at 09:30
At what action? – Sep 20 '17 at 09:30
You can run a audit to see where the bottleneck is. read more about audits here. https://developers.google.com/web/tools/chrome-devtools/evaluate-performance/ – Thusitha Sep 20 '17 at 09:32
@peter well, to sum it up: make several API calls. This works fine for a random number of time, everytime the same action. And sporadically it causes the browser to freeze. – scipper Sep 20 '17 at 09:32
@Thusitha I will give it a try. – scipper Sep 20 '17 at 09:32
Are you dealing with large base64 image files in the api call? – Thusitha Sep 20 '17 at 09:32
Check for infinite loops... – Cerbrus Sep 20 '17 at 09:34
No images. Just Json reponse with a max size of 7KB and a max amount of calls per action of 51. – scipper Sep 20 '17 at 09:34
@Cerbrus yes, good approach. But if a process runs fine for several time, and sporadically breaks, where to start searching? – scipper Sep 20 '17 at 09:35
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Check here. https://stackoverflow.com/questions/7289937/how-can-you-debug-javascript-which-hangs-the-browser – Thusitha Sep 20 '17 at 09:37
@Thusitha with console.log's before and after I was able to find the villain. Thanks for the idea! – scipper Sep 20 '17 at 10:53

How to detect reason for browser freeze?

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