What Is PID 0?

This page summarizes the projects mentioned and recommended in the original post on news.ycombinator.com

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  • illumos-gate

    An open-source Unix operating system

    We can see it is called sched. Why sched? This article talked about the historic role of PID 0 in process swapping. Process swapping is a scheduling problem (like a lot of problems in software). This is why swappers are traditionally called medium-term or memory schedulers. Illumos generally gives most groupings of kernel worker threads their own processes with their own PIDs, but one, called "sched", remains in PID 0, and its responsibility? Process swapping:

    https://github.com/illumos/illumos-gate/blob/579c23696ac6891...

    The Wikipedia article has now been hastily edited, and replaces a claim that was true only of certain Unixes other than Linux with a claim true only of certain Unixes including Linux. Is this an improvement?

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  • linux

    @superna9999's Linux kernel source fork for upstream development (by superna9999)

    I don't like that, it's not good practice.

    One should give links to original sources, i.e. https://kernel.org as far as Linux is concerned.

    Even if git guarantees that the content is the same (if someone bothers to verify that the SHA-1 is the same and we exclude the possibility of a SHA-1 collision in git, which is yet to be demonstrated).

    kernel.org existed before github.

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