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sched_ext: scheduler architecture and interfaces (Part 2)
This is the second blog post about the sched_ext, a BPF-based extensible scheduler class. In this blog post, I briefly update what has been happening in sched_ext, then introduce the scheduler architecture and the sched_ext API. After reading this, you should have a good understanding of the sched_ext architecture and be ready to read the source code of any sched_ext schedulers.
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sched_ext: a BPF-extensible scheduler class (Part 1)
This blog post introduces sched_ext, a recently proposed extensible scheduler class. sched_ext allows you to write and run your custom process scheduler optimized for your target workloads and hardware architectures using BPF programs. In the rest of the post, I recap the concept of a scheduler at the high level and go over the default schedulers in Linux kernel. Then, I introduce why an extensible scheduler framework, sched_ext, is necessary, how to use it, and provide a BPF scheduler example.
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