RSoC 2026: A new CPU scheduler for Redox OS
4 hours ago
- #Performance Optimization
- #Redox OS
- #CPU Scheduler
- Redox OS's Round Robin scheduler was replaced with a Deficit Weighted Round Robin (DWRR) scheduler to allow priority assignment.
- DWRR improves performance under heavy load, with gains like ~150 FPS in pixelcannon and ~1.5x in CPU-bound tasks.
- An interleaved DWRR approach reduces starvation for low-priority tasks while maintaining benefits for high-priority ones.
- The new scheduler enables priority management via nice and renice commands, with setup instructions provided in the article.
- Simulations show DWRR and interleaved DWRR outperform RR in metrics like average response time and task execution frequency.
- Real-world tests confirm performance improvements, such as increased FPS in pixelcannon and better operations/sec in schedrs under contention.