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Realtime programming best practice is to lock realtime code memory to prevent paging which will lead to unbounded latencies. The Linux MCU process has well bounded memory and small RAM footprint so locking the entire process' RAM has no downsides and will improve behavior when the system comes under memory pressure. (See bootlin training and Linux Foundation documentation linked below.) RT process priority ranges from 0-99 (although POSIX only requires 32), boost MCU process priority to half the max/2 to improve robustness when the system comes under pressure from other RT Kernel or user processes. Reference links: bootlin: https://bootlin.com/doc/training/preempt-rt/preempt-rt-slides.pdf Linux Foundation: https://wiki.linuxfoundation.org/realtime/documentation/howto/applications/application_base#howto_build_a_simple_rt_application Signed-off-by: Matthew Swabey <matthew@swabey.org>
Welcome to the Klipper project!
Klipper is a 3d-Printer firmware. It combines the power of a general purpose computer with one or more micro-controllers. See the features document for more information on why you should use Klipper.
To begin using Klipper start by installing it.
Klipper is Free Software. See the license or read the documentation. We depend on the generous support from our sponsors.