scx_flash

This is a single user-defined scheduler used within sched_ext, which is a Linux kernel feature which enables implementing kernel thread schedulers in BPF and dynamically loading them. Read more about sched_ext.

Overview

A scheduler that focuses on ensuring fairness among tasks and performance predictability.

It operates using an earliest deadline first (EDF) policy, where each task is assigned a "latency" weight. This weight is dynamically adjusted based on how often a task release the CPU before its full time slice is used. Tasks that release the CPU early are given a higher latency weight, prioritizing them over tasks that fully consume their time slice.

Typical Use Case

The combination of dynamic latency weights and EDF scheduling ensures responsive and consistent performance, even in overcommitted systems.

This makes the scheduler particularly well-suited for latency-sensitive workloads, such as multimedia or real-time audio processing.

Production Ready?

Yes.