Hi， We tested the WasmSnapshot solution in the production environment. 1. Tested with more than 500,000 users, no user feedback has been found so far 2. It takes 2 seconds to optimize the startup time. Before optimization, the game startup takes about 10s. On Android, the optimization is 13.6%, and the iOS optimization is 22.2%
This solution works very well, and I want to document this solution on Emscrpten's documentation, such as this “link <https://emscripten.org/docs/optimizing/Optimizing-Code.html#unsafe-optimizations> (Emscripten/OptimizingCode/UnsafeOptimize)” (or some other documents), so that more people know that this method is feasible. What do you think of this? Thanks, 在2022年12月22日星期四 UTC+8 23:30:40<s...@google.com> 写道： > Hi Damon > > This sounds really great. When you say "Wasm Snapshot" are you talking > about some tool that you wrote yourself or some existing tool such as > wizer? Would you be interested in contributing this tool to emscripten, or > perhaps some documentation on how to go about doing this? > > cheers, > sam > > On Thu, Dec 22, 2022 at 7:23 AM Damon Lei <danxi...@gmail.com> wrote: > >> >> Hi >> >> I am trying to use the Wasm Snapshot to reduce the startup time, and it >> succeeded. Wasm Apps run correctly, reducing startup time by 20-50%. >> >> My job is to help developers export Unity games to webgl mode to run on >> our App (WeChat in China). >> Unfortunately, after exports, wasm callMain is very slow, taking an >> average of 5 seconds. >> >> So I spent a few months experimenting with the Wasm Snapshot solution, >> which means, take a snapshot of Wasm App during development. >> At runtime, callMain is no longer executed, but a snapshot.data is >> downloaded and restored. The snapshot.data includes Wasm Memory, FS, GL, >> and other JS States. >> At the same time, I will cut out the data in wasm and some resources of >> Unity's res-bundle, because they are no longer needed. >> >> In the 5 Unity games tested, no problems were found. Startup >> time-consuming optimization is considerable. >> >> The snapshot.data size is about 4MB after compression(brotli). >> The optimization is about 2-5sec (20%-50%). See the end for specific data. >> >> Wasm Snapshot is an awesome solution, and I want you to know that it >> really works. >> At the same time, I would like to know whether the startup is a common >> problem? And can it be used as a new feature of Emscripten to benefit more >> users? >> >> [image: 截屏2022-12-22 17.34.57.png] >> >> -- >> You received this message because you are subscribed to the Google Groups >> "emscripten-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to emscripten-disc...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/emscripten-discuss/cdaeda97-f40f-42ac-8194-2bb771d49aebn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/emscripten-discuss/cdaeda97-f40f-42ac-8194-2bb771d49aebn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to emscripten-discuss+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/47c58803-33fc-44d5-95ae-29f98e9b3dban%40googlegroups.com.
