disable LTO in RISC-V to speed up build #1038
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After doing some emulated, local tests, I think this seems reasonable to try again. It'll be a less optimized python, but that's better than no riscv64 None of these builds are as slow as I was getting in #931 and it's on the same machine. 😕 🤷 $ # --with-lto
$ for ver in 3.10 3.11 3.12; do time docker build --no-cache --platform linux/riscv64 ./$ver/alpine3.20/; done
real 19m13.374s
real 30m32.618s
real 33m12.560s
$ # without lto
$ for ver in 3.10 3.11 3.12; do time docker build --no-cache --platform linux/riscv64 ./$ver/alpine3.20/; done
real 8m49.526s
real 9m41.161s
real 9m22.683sRequested change: also remove this part of |
tianon
reviewed
May 8, 2025
| @@ -182,7 +182,7 @@ RUN set -eux; \ | |||
| # <3.10 does not have -fno-semantic-interposition enabled and --with-lto does nothing for performance | |||
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| # <3.10 does not have -fno-semantic-interposition enabled and --with-lto does nothing for performance | |
| # <3.10 does not have -fno-semantic-interposition enabled and --with-lto does nothing for performance | |
| # skip LTO on alpine on riscv64: https://github.com/docker-library/python/pull/935, https://github.com/docker-library/python/pull/1038 |
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thanks for the comments, should all be done |
tianon
approved these changes
May 8, 2025
docker-library-bot
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May 9, 2025
Changes: - docker-library/python@4c3ad300: Merge pull request docker-library/python#1038 from mmoll/no_lto_on_riscv - docker-library/python@90aa4272: disable LTO in RISC-V to speed up build
gquintard
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Jun 11, 2025
Changes: - docker-library/python@4c3ad300: Merge pull request docker-library/python#1038 from mmoll/no_lto_on_riscv - docker-library/python@90aa4272: disable LTO in RISC-V to speed up build
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Closes #1011