Vice Motherboard is very janky |
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Issue descriptionrepro: visit https://motherboard.vice.com/en_us/article/leave-chrome-for-opera scroll around up and down. make the infinite scroll load. experience jank. If you follow task manager, the site quickly eats up 700+MB of RAM This happens on Chromebooks and Chrome desktop for Macbook Pro. It also is seen in Safari, perhaps a little less severe (need to test further).
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May 18 2017
On a first glance, it looks like the webpage is leaking. Scrolling down for a while will continuously increase memory. Hitting the garbage bin in dev tools does not help to clean-up. There are a lot of closures on the JS heap, I also see the botguard script which is a known leak. Overall it looks like a webpage leak. Assigning to the current memory sheriff for further investigation.
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Jun 19 2017
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Jun 27 2017
Passing on to current sherrif
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Jun 29 2017
I agree with assessment in comment #2. The webpage is leaking. The jank comes from scripting (I attached performance profile). There are JS function calls that take more than 1000 ms. Garbage collection takes about 20% of that time. This will improve when concurrent marking is implemented ( crbug.com/694255 ). I also noticed that sometimes we do full GC instead of incremental GC. I filed crbug.com/738031 for this. Other than that, there is nothing actionable for the garbage collection team.
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Jun 30 2017
I landed a fix for crbug.com/738031 that replaces full GCs with incremental GCs. That should improve jank slightly. Since the webpage is leaking memory and most of jank comes from long running JS functions, I think the problem is in webpage code rather than in Chrome. Assigning back to igo@, to make a call to either close this as "won't fix" or start performance traiging outside GC.
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Aug 24 2017
igo@, can you check again? |
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Comment 1 by josa...@chromium.org
, May 18 2017