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GeezerVison is showing github.com — gh-1542: Do not suggest `make -j` by Yhg1s · Pull Request #1543 · python/devguide

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@Yhg1s

@Yhg1s Yhg1s commented Apr 18, 2025 •
edited by github-actions Bot
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Do not suggest make -j for building CPython. make -j means no limit on

the number of concurrent jobs, not "a sensible limit considering the available memory and CPU cores". With LTO it's easy to run out of memory when too many jobs run at the same time.

📚 Documentation preview 📚: https://cpython-devguide--1543.org.readthedocs.build/

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@Yhg1s
Do not suggest make -j for building CPython. make -j means _no_ l…
ad15aeb 
…imit on

the number of concurrent jobs, not "a sensible limit considering the
available memory and CPU cores". With LTO it's easy to run out of memory
when too many jobs run at the same time.
hugovk
hugovk reviewed Apr 18, 2025
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Comment thread developer-workflow/extension-modules.rst

Use ``make -j`` to speed-up compilation by utilizing as many CPU cores
as possible or ``make -jN`` to allow at most *N* concurrent jobs.
Use ``make -jN`` to speed-up compilation by utilizing as many CPU cores

@hugovk hugovk Apr 18, 2025

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Suggested change
Use ``make -jN`` to speed-up compilation by utilizing as many CPU cores
Use ``make -jN`` to speed-up compilation by using as many CPU cores

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@zware zware mentioned this pull request Apr 18, 2025
Don't suggest to start build with infinite number of threads #1087
Closed
@AA-Turner AA-Turner mentioned this pull request Apr 18, 2025
Ensure make -j uses a reasonable argument #1541
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@Yhg1s

Yhg1s commented Apr 18, 2025

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Closing in favour of #1541.
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@Yhg1s Yhg1s closed this Apr 18, 2025
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@Yhg1s @hugovk
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