MSYS2-packages: is msys2 gcc expected to be twice as slow as native linux toolchain?
Hello, I have recently compared the performance of gcc toolchain running in msys2 (mingw64 bash) vs native linux when building mame. I was a bit shocked to see that the build time under Linux is almost twice as long:
$ git clean -xdf
$ time make SUBTARGET=tiny PTR64=1 TOOLS=1 OPTIMIZE=3 IGNORE_GIT=1 -j12
On my Ryzen 2600 with 32 GiB RAM I got the following results:
| Fedora | Windows | |
|---|---|---|
| real | 5m29,608s | 11m38,268s |
| user | 54m34,952s | 0m40,542s |
| sys | 2m43,733s | 2m22,465s |
Is this normal? Or is there a way to bring the performance closer to Linux? Thanks!
About this issue
- Original URL
- State: open
- Created 4 years ago
- Comments: 20 (9 by maintainers)
@lazka, thanks! I have also submitted a similar PR to @balr0g who begun working on github actions CI: https://github.com/balr0g/mame/pull/1
Also make sure to exclude the compiler and the project from AV software.