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"a web page is slowing down your browser" why?

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I have noticed the the yellow message "a web page is slowing down your browser" What triggers this message in FF.

I have noticed the the yellow message "a web page is slowing down your browser" What triggers this message in FF.
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kj2008 try "about:performance" because even though I think the problem may be re-trannsmission I see it at times that do not seem to be a throughput problem.

kj2008 try "about:performance" because even though I think the problem may be re-trannsmission I see it at times that do not seem to be a throughput problem.
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kj2008 0 rešitev 22 odgovorov

Mace2 - What do you mean?

Mace2 - What do you mean?
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If you run "about:performance" since it happens frequently for you I am hopping the stats might show a performance degradation but I am not sure.

If you run "about:performance" since it happens frequently for you I am hopping the stats might show a performance degradation but I am not sure.
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kj2008 0 rešitev 22 odgovorov

What is about:performance?

What is about:performance?
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cor-el
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This message is probably about the website taking a lot of CPU time, probably on the main processor thread. I don't know which tasks run on the main thread and which run asynchronously on their own thread. I would assume that about:performance (Task Manager) shows that a tab uses a lot of processor time.

This specific message is about the Process hang reporter. When the browser hangs and doesn't return control then this warning bar is displayed

This message is probably about the website taking a lot of CPU time, probably on the main processor thread. I don't know which tasks run on the main thread and which run asynchronously on their own thread. I would assume that about:performance (Task Manager) shows that a tab uses a lot of processor time. This specific message is about the Process hang reporter. When the browser hangs and doesn't return control then this warning bar is displayed * https://dxr.mozilla.org/mozilla-release/source/browser/locales/en-US/chrome/browser/browser.properties *https://dxr.mozilla.org/mozilla-release/source/browser/modules/ProcessHangMonitor.jsm
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I want to automatically stop a non-responsive script without having to do anything. Is this possible?

I want to automatically stop a non-responsive script without having to do anything. Is this possible?
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I have noticed a issue in which if you are watching a Youtube videos that a response via http to a site map2.hwcdn.net which works out to IP (205.185.216.42 causes a large amount of retries to the network causing congestion.

I do not know exactly how the map2.hwcdn.net site gets engaged but even though the network retries are massive causing intermittent play of anything in FF . But FF does not notify that a site is slowing down your browser.

I have noticed a issue in which if you are watching a Youtube videos that a response via http to a site map2.hwcdn.net which works out to IP (205.185.216.42 causes a large amount of retries to the network causing congestion. I do not know exactly how the map2.hwcdn.net site gets engaged but even though the network retries are massive causing intermittent play of anything in FF . But FF does not notify that a site is slowing down your browser.
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