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[feature request] waitpid via epoll() #399

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FurryR opened this issue Apr 22, 2025 · 1 comment · May be fixed by #400
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[feature request] waitpid via epoll() #399

FurryR opened this issue Apr 22, 2025 · 1 comment · May be fixed by #400

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@FurryR
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FurryR commented Apr 22, 2025 •
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Currently the implementation waitpid is using spin waiting, which could lead to performance issues. It is possible to refactor it via pidfd_open and epoll to allow CPU to save battery.

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procps/src/uu/pidwait/src/wait.rs

Line 28 in 1194b3f

sleep(Duration::from_millis(50));

@FurryR FurryR linked a pull request Apr 24, 2025 that will close this issue
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FurryR commented Apr 24, 2025

Linked a possible solution here. The new implementation referred to waitpid-any, which is distributed under either MIT License or Apache-2.0 License, so it should be fine. I also credited the author in the source file.

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pidwait: optimize & cross-platform FurryR/procps
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