Writing a Process Scheduler Simulation in C of FreeBSD
reddit / freebsd

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Epicvisiions101 · 2020-12-09 03:11

Hi, I’m writing a simulation of a process scheduler in C for FreeBSD.
Any tips or guidance here? Doesn’t have to use pthreads or posix. Just
a simple demonstration of a priority round robbin with FreeBSD tweaks.

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istarian · 2020-12-09 05:04

Unless you use actual processes (sub processes of the initial/main
one?) maybe a simulated cpu would be good?

After all you need a bunch of defined tasks that will take at least
two time slices whose execution can be halted and resumed plus an
environment where you can interleave doing them in a scheduled
fashion.

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alx82 · 2020-12-09 06:18

Are you writing a simulation of FreeBSD's scheduler (ULE)? What is the
purpose of your project? If you are interested in scheduler tracing,
then dtrace is what you are looking for
https://wiki.freebsd.org/DTrace/Tutorial

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Epicvisiions101 · 2020-12-09 14:31

The purpose of the project is to simply simulate the scheduler, using
a priority round robbin and printing out the simulation.