MINIX TIMESLICE HOW TO

Since I wanted to deviate my project slightly from the resources I found online, instead of just implementing more than one scheduling policy, I elected to compare the default scheduling policy with a priority scheduling algorithm, and vary the number of queues by +- 25%. It is very similar to the project I had intended on doing, so whilst I did not copy it directly (licensing and copyright issues and whatnot), I did use it as a resource for implementing my own project.

It includes a few test files and the changes necessary to make to some of MINIX3вЂ™s files in order to implement different algorithms.

Whilst I was googling information about implementing priority-based algorithms, I found this wonderful project done by a GitHub user named Akshita Mittel. As outlined in the report, the easiest policies to implement with the user mode scheduler are round robin, priority, staircase, and some other queue-based policies. Both the kernel-level and the user-level schedulers implement a Round Robin scheduling algorithm by default. There still is a small default scheduler that had to be implemented, but the main scheduling policy is implemented within the user mode scheduler. What the scheduling report outlines is the move of the scheduler into the user mode level of MINIXвЂ™s layered design system. This meant that any scheduling changes that were to be implemented involved editing kernel code, which could end up being pretty complex in the event of errors, etc. In the official MINIX3 book, the scheduler is still built into the Kernel. IвЂ™ve talked about this a bit in my previous blogs, but I figured IвЂ™d recap in this one now that I have a better understanding of the system.

MINIX TIMESLICE HOW TO

This was adding to the confusion in how to approach the system, because I was getting my information on the implementation of the scheduler from both sources. It doesnвЂ™t reflect the design found in this report, which describes the current scheduling algorithm (found in versions 3.3.0 and newer, I believe). I had also not realized this at the time, but the scheduling algorithm in the official MINIX3 Book was an older version. When we started meeting, I hadnвЂ™t done any actual programming in the scheduler, and I was still fuzzy on how the whole scheduler worked as one unit. He knew I was pretty darn stressed about it, but was also pleased with how much I had learned about MINIX3 and Operating Systems in general. I havenвЂ™t written a blog post for MINIX3 in some time (sorry Professor), and I figured that it would probably be wise to wrap up what I managed to complete this semester after I managed to get past all the stress I was feeling.ДЄbout halfway through the semester I started meeting weekly with my professor in order to discuss ways to approach my project.

Minix timeslice