https://motherboard.vice.com/en_us/article/its-like-tweeting-but-you-cant-use-the-letter-e scrolls very slowly |
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Issue descriptionGoogle Chrome 57.0.2987.140 (Official Build) beta (64-bit) Revision 0 Platform 9202.61.0 (Official Build) beta-channel reef This was reported through hacker news: https://news.ycombinator.com/item?id=14159734 hashhar writes: """ [...] use Chrome Canary to browse https://motherboard.vice.com/en_us/article/its-like-tweeting-but-you-cant-use-the-letter-e and then use Firefox Nightly. Chrome can barely manage to keep up with scrolling while Firefox chugs along nicely. """ What steps will reproduce the problem? (1) Start loading the page. (2) Try scrolling. What is the expected result? Scrolls smoothly. What happens instead? Very sluggish.
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Apr 21 2017
There's an 85ms long scroll event handler on my beefy desktop. For wheel scrolling, we're hitting the main thread every wheel tick, and they aren't. I'm duping this on the wheel latching bug. This works fine with touch in Chrome, and badly with keyboard in both browsers. I haven't dug into to see whether or not their first wheel event is hitting the main thread. I assume it is, and either way, scroll latching will give us 99% of the benefit. |
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Comment 1 by esprehn@chromium.org
, Apr 21 2017