Summary

Colin Walls examines how device startup time affects usability and the trade-offs between staying in standby versus performing a full boot. The blog explains practical techniques to reduce wake and boot latency across microcontrollers, RTOS-based systems and embedded Linux, and how to measure and balance power, security and user experience.

Key Takeaways

• Measure end-to-end startup latency to identify bottlenecks (bootloader, kernel/init, drivers, apps).
• Design wake paths using low-power states and selective peripheral retention to minimize wake time and energy.
• Optimize bootloaders and init sequences (defer init, parallelize, use minimal images) to speed cold boots.
• Balance security and reliability (secure boot, watchdogs) with fast-boot techniques and graceful fallbacks.

Who Should Read This

Firmware and embedded systems engineers or architects who need to reduce device startup and wake latency to improve product usability and battery life.

Still RelevantIntermediate

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