Amazon page takes lots of CPU when tab is active but little is happening |
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Issue descriptionVersion: 53beta OS: macos 10.11.x Load https://smile.amazon.com/Supermats-P-V-C-Weightlifting-Equipment-4-Feet/dp/B004IJK0DQ/ref=pd_rhf_dp_s_cp_25?ie=UTF8&psc=1&refRID=9008YNFMAYM7BS8JZ7XE Observe continuous CPU usage (around 15-20%) when tab is active. Chrome trace attached.
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Sep 6 2016
Doesn't repro in 53.0.2785.89 or 55.0.2850.0 canary for me. Happy low-idling CPU. Can you try and find a version with repro please test team?
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Sep 6 2016
Unable to reproduce the issue on mac 10.11.6 chrome version 53.0.2785.89 and canary 55.0.2850.0 - When tab is active observed cpu usage to be low. Please find the screenshot Could you please try the same with a new profile and update the thread with observations.
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Sep 7 2016
I could reproduce this, but as tkent says, it looks like heavy javascript. For example, one ~58ms timer invocation I saw in my trace (M55 retina mac book pro) was mostly synchronous forced layouts (12 of them!). This seems like WontFix. pinkerton@, please reopen if you think this is in error.
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Sep 14 2016
It's possible they were running an experiment, as they do from time to time. Makes our job rather difficult :-) |
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Comment 1 by tkent@chromium.org
, Sep 5 2016