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Awful performance on mounting caused by the iframe
See original GitHub issueIn v2, when dynamically adding multiple charts (let’s say 15), the performance is awful.
This seems to be caused by the helpers.addResizeListener, which is taking an awful lot of time, blocking everything.
Here are some screenshots where I also have the AdBlockPlus extension installed, which is doing some things on the iframe’s element:
After uninstalling the extension, there is less time spent on Parse HTML, but the execution of helpers.addResizeListener still takes way too long.
Issue Analytics
- State:
- Created 8 years ago
- Comments:12 (10 by maintainers)
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@IonutLaceanu thanks for the detailed bug report. I can confirm that
helpers.addResizeListeneris slow on my machine (~4.5ms).It looks like a lot of the time is spent in
insertBefore. Further, I noticed a typo thatclasslistshould beclassList. I’m sure that doesn’t help performance either.also worth keeping an eye on (but not usable yet): https://developers.google.com/web/updates/2016/10/resizeobserver