NTP (probably doodle) taking 30% CPU without any interaction |
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Issue descriptionVersion: M54beta OS: 10.11.x - Open an new tab. - Observe renderer for NTP taking 30% CPU Tab sitting still takes 30% of my CPU. I'm not doing anything, there is not even a flashing cursor anywhere. There is a hispanic heritage doodle, that's probably what's churning. Trace attached. The larger question is how can we prevent doodles which are outside our control from taking over the user's machine?
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Sep 25 2016
If this happens again, can you also grab a JavaScript trace?
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Sep 26 2016
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Sep 27 2016
I did the default trace, which is "javascript and rendering". What should I have done differently? FWIW, the doodle has changed, so reproducing this seems unlikely. Can we find a way to force a build to show a specific doodle?
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Sep 27 2016
> I did the default trace, which is "javascript and rendering". What should I have done differently? There is chrome://tracing which shows everything the browser is doing. There is also JavaScript tracing (View -> Developer -> Developer Tools, click Timeline tab, click the dark gray circle at the left to start recording) which shows what the JavaScript code is doing. The JavaScript tracing makes it easy to see that the page is firing a timer every ms, etc. > FWIW, the doodle has changed, so reproducing this seems unlikely. Can we find a way to force a build to show a specific doodle? Old doodles are here: https://www.google.com/doodles/. Which one was it?
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Sep 27 2016
Could this be Issue 650428? pinkerton@, please see if you still get 30% even without Doodle. You can get rid of Doodle by installing a theme with dark background. But note that in this case the CSS-animated Doodle Notifier would be running (it stops after 2 min to save power).
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Sep 28 2016
+ treib (FYI)
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Oct 7 2016
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Comment 1 by rpop@chromium.org
, Sep 23 2016