EmbeddedRelated.com
The 2026 Embedded Online Conference
From Baremetal to RTOS: A review of scheduling techniques

From Baremetal to RTOS: A review of scheduling techniques

Jacob Beningo
Still RelevantIntermediate

Transitioning from bare-metal embedded software development to a real-time operating system (RTOS) can be a difficult endeavor. Many developers struggle with the question of whether they should use an RTOS or simply use a bare-metal scheduler....


Summary

This blog by Jacob Beningo surveys scheduling techniques used when moving from bare-metal firmware to an RTOS, explaining core models, tradeoffs, and practical migration concerns. Readers will learn how different schedulers affect latency, determinism, and design complexity, plus actionable guidance for choosing and implementing an RTOS-based architecture.

Key Takeaways

  • Identify the differences between cooperative and preemptive scheduling and when each model is appropriate
  • Evaluate tradeoffs in latency, determinism, and resource use to decide whether to adopt an RTOS or remain bare-metal
  • Apply practical migration strategies for moving tasks, ISRs, and timing-sensitive code into an RTOS
  • Estimate timing impacts such as context-switch overhead, interrupt latency, and stack usage when adopting an RTOS
  • Mitigate common issues like priority inversion using priority inheritance and appropriate task design

Who Should Read This

Embedded firmware engineers and developers with MCU experience who are evaluating RTOS adoption or refining scheduling designs for tighter timing and complexity management.

Still RelevantIntermediate

Topics

RTOSBare-Metal ProgrammingFirmware DesignARM Cortex-M

Related Documents


The 2026 Embedded Online Conference