| Device | p95 time to screen (μs) | commits* (per second) | dropped (%) | shown (%) |
|---|---|---|---|---|
| MacBook Pro M1 (Low Power Mode) | 54503 | 8.29513478338838 | 99.93% | 0.07% |
| MacBook Pro M1 (Normal Mode) | 29995 | 14.199860454098628 | 99.94% | 0.06% |
| Device | p95 time to screen (μs) | commits* (per second) | dropped (%) | shown (%) |
|---|---|---|---|---|
| MacBook Pro M1 (Low Power Mode) | 3836 | 55.88474939301838 | 0% | 100% |
| MacBook Pro M1 (Normal Mode) | 2599 | 57.28601341415711 | 0.17% | 99.83% |
| Device | p95 time to screen (μs) | commits* (per second) | dropped (%) | shown (%) |
|---|---|---|---|---|
| MacBook Pro M1 (Low Power Mode) | 10751 | 57.584662495691184 | 0.17% | 99.83% |
| MacBook Pro M1 (Normal Mode) | 6804 | 58.092110850965284 | 0.17% | 99.83% |
*commits: https://react.dev/learn/render-and-commit
target: dell 7230 tablet: intel i7 10 core cpu, 32gb ram, linux (ubuntu)
test:
-eff-coreis the low power M1 efficiency cores-prf-coreis the standard M1 performance cores
todo:
- get a consistent profiling number
- setup docker environment to run in ci
how to:
- start ui server with production build (
npm run start:prod) - start ws server (
npm run start:server) - start profiler (
npm run start:profile) - traces will be dumped in
/tmp - you may need to format your trace to make it small enough to read for the parser. you can use
filter:profile -- raw-trace > filtered-traceto do so (requiresjq) - once you have a small enough trace you can pass it to the parser to get the p95 render time and number of dropped renders (
npm run start:parser -- trace) - output will be in the format:
p95_render_time_microseconds n_dropped_updates
related reading:
- https://web.dev/articles/rendering-performance
- https://addyosmani.com/blog/profiling-react-js/
- https://kentcdodds.com/blog/profile-a-react-app-for-performance
- https://react.dev/learn/render-and-commit
- https://blog.isquaredsoftware.com/2020/05/blogged-answers-a-mostly-complete-guide-to-react-rendering-behavior/#render-and-commit-phases