Oh, wow, it shouldn't be anything like that... If you built binaryen by yourself, I'd make sure that's not a debug build. Another thing is to check you don't set BINARYEN_CORES=1 in the environment (which would prevent an almost linear speedup with more cores). And in a very big project perhaps it takes enough memory to cause swapping, so checking peak memory usage etc. might be interesting.
If those aren't it, I'd run it in a profiler to see what's taking so long. If you can share the file I can take a look too. - Alon On Wed, Jan 22, 2020 at 11:31 AM Patrik Weiskircher <[email protected]> wrote: > Hi! > > I'm working at PSPDFKit trying to upgrade our Web viewer from Emscripten > version 1.38.31 to 1.39.6. > I got everything working so far, I'm just having a little trouble with the > linking speed. Everything goes fine and quick > enough until we hit linking the library - specifically the > `wasm-emscripten-finalize` step. > > The exact command line is this: > > /opt/emsdk/upstream/bin/wasm-emscripten-finalize --detect-features > --global-base=1024 --check-stack-overflow \ > > /tmp/emscripten_temp_rjgvGG/pspdfkit.wasm.wasm -o > /tmp/emscripten_temp_rjgvGG/pspdfkit.wasm.wasm.o.wasm > > This takes around 15 minutes. While this isn't a deal breaker, it does > make our CI quite slow and keeps agents occupied > longer than necessary. It'll also not be great when we have to debug a > problem on Emscripten in the future. > > I looked around on the GitHub issue board and also on the mailing list but > I couldn't find any information about this. I > understand we have quite a big code base and things will take some time - > I'm just wondering if anyone has any tips > on how I could debug what *exactly* takes this long or how to make this > any quicker? > > Thanks so much! > Patrik > > > -- > 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]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/emscripten-discuss/cca83aa0-c022-4a94-8cc6-42063b5ccebc%40googlegroups.com > <https://groups.google.com/d/msgid/emscripten-discuss/cca83aa0-c022-4a94-8cc6-42063b5ccebc%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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/CAEX4NpREWRPRu1M%3DEx2t%2BQXkt7pQ64sgFC%2BaGU6h_H5vbX9ocA%40mail.gmail.com.
