Code here: https://www.dropbox.com/s/ft2dzlpkjfbav32/html.zip?dl=0
Ashara.js is the calling JS file, Blob.js is the generated file. I actually verified this only happens on Chrome, Firefox seems better (8ms). On Thursday, April 7, 2016 at 5:12:00 PM UTC-7, Charles Vaughn wrote: > > Can you share code, or at least the output JS? there's a lot of factors > that will cause Emscripten built JS to perform poorly. > > On Thursday, April 7, 2016 at 4:41:13 PM UTC-7, Gareth Morgan wrote: >> >> I am experimenting with using Emscripten generated code in my Javascript >> application. The results are pretty disappointing performance-wize. I am >> seeing 40x slower on Chrome 49.0.2623.110 (compiling with emcc -o3) >> versus a release build on visual studio. >> >> I have a fairly straight forward marching squares based geometry >> generation function, running in a plain EXE complied with visual studio in >> release mode, the function call takes around 2.5ms (as reported by >> QueryPerformanceCounter), the identical function run in my javascript >> appliction takes 90-100ms (measured by Date().getMilliseconds()). I have >> verified the time scales roughly with the size of the problem, so it's not >> just setup/JIT cost. >> >> My compile line is this; >> emcc DCEL.cpp MS.cpp Blob.cpp -o html/Blob.js -O3 -s >> EXPORTED_FUNCTIONS="['_Blobify','_Init']" >> >> >> I realize there is no native code support on this version of Chrome, but >> is this expected? Am I missing an optimization step? >> > -- 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
