williaster commented on issue #4727: [webpack] setup lazy loading for all visualizations URL: https://github.com/apache/incubator-superset/pull/4727#issuecomment-395911509 These are the final set of 3x empirical tests per example dashboard before and after, on non-minimized code with hard refresh/no caching. They look **even better** than above! - average total payload **decreased by 8.8 MB** (-65% change) - DOM content load time **decreased 7.4s** (-66% change) - Page total load time **decreased 8.5 s** - the average # requests **increased by 13** @mistercrunch shall we merge this? 🚀  | Total payload (MB) |  |  -- | -- | -- | -- Dashboard | Before | After |  Delta Births example | 12.5 | 3.9 | **-8.6 MB** World data example | 12.5 | 3.9 | **-8.6 MB** Misc charts example | 14.6 | 5.9 | **-8.7 MB** Deck gl | 17.2 | 8.1 | **-9.1 MB**  | DOM content loaded (seconds) |  |  -- | -- | -- | -- Dashboard | Before | After | Delta Births example | 11.52 | 3.84 | **-7.68 s** World data example | 10.77 | 4.09 | **-6.68 s** Misc charts example | 10.59 | 3.52 | **-7.07 s** Deck gl | 11.69 | 3.62 | **-8.07 s**  | Total time [all requests incl async] (sec) |  |  -- | -- | -- | -- Dashboard | Before | After | Delta Births example | 16.63 | 8.44 | **-8.19 s** World data example | 13.17 | 5.51 | **-7.66 s** Misc charts example | 17.58 | 9.5 | **-8.07 s** Misc charts example w Deck gl | 18.43 | 8.31 | **-10.12 s**  | Requests (count) |  |  -- | -- | -- | -- Dashboard | Before | After | Delta Births example | 32 | 44 | +12 World data example | 29 | 42 | +13 Misc charts example | 46 | 59 | +13 Deck gl (high bc of map tiles) | 196 | 208 | +12
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