JIT: Use pthread_jit_write_protect_np on macOS #126195
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OS-mac
performance
Performance or resource usage
topic-JIT
type-feature
A feature request or enhancement
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diegorusso
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Oct 30, 2024
Replace mprotect with pthread_jit_write_protect_np on MacOS Apple Silicon. Improve JIT performance by ~1.4% on this platform.
diegorusso
added a commit
to diegorusso/cpython
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this issue
Oct 30, 2024
Replace mprotect with pthread_jit_write_protect_np on MacOS Apple Silicon. Improve JIT performance by ~1.4% on this platform.
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Feature or enhancement
Proposal:
The proposal is an internal implementation of the JIT and it transparent to the user.
Has this already been discussed elsewhere?
I have already discussed this feature proposal on Discourse
Links to previous discussion of this feature:
Not on Discourse, I've had extensive discussion about this with @brandtbucher and created a prototype that we benchmarked using the faster-cpython infrastructure. The full results are here: https://github.com/faster-cpython/benchmarking-public/tree/main/results/bm-20241018-3.14.0a1+-f74cd79-JIT
On macOS on Apple Silicon there is an overall 1.4% speed improvement by replacing the
mprotectwithpthread_jit_write_protect_np.Linked PRs
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