PREEMPT_RT

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PREEMPT_RT is a set of patches for the Linux kernel which implement real-time computing capabilities. It has not been merged into mainline Linux as of 2024.^[1]

History

It has been developed since 2005.^[2] In 2021, the preemption core locking code was merged.^[3]^[4] In February 2023, Canonical released a real-time version of Ubuntu.^[5]

MontaVista Software has been releasing a real-time Linux distribution containing the PREEMPT_RT patchset since the early 2000. Montavista's current main embedded Linux product, CGX, contains real-time preemption as a standard feature.

References

^ "The real realtime preemption end game". LWN.net. Retrieved 2023-11-16.
^ Reghenzani, Federico; Massari, Giuseppe; Fornaciari, William (2019-02-21). "The Real-Time Linux Kernel: A Survey on PREEMPT_RT". ACM Computing Surveys. 52 (1): 18:1–18:36. doi:10.1145/3297714. hdl:11311/1076057. ISSN 0360-0300.
^ "Realtime preemption locking core merged [LWN.net]". lwn.net. Retrieved 2023-02-09.
^ "The future of realtime Linux". LWN.net. Retrieved 2023-02-09.
^ Proven, Liam. "Real-time Ubuntu 22.04: What you need to know". The Register. Retrieved 2023-02-20.

External links

Official website

[1] "The real realtime preemption end game". LWN.net. Retrieved 2023-11-16.

[2] Reghenzani, Federico; Massari, Giuseppe; Fornaciari, William (2019-02-21). "The Real-Time Linux Kernel: A Survey on PREEMPT_RT". ACM Computing Surveys. 52 (1): 18:1–18:36. doi:10.1145/3297714. hdl:11311/1076057. ISSN 0360-0300.

[3] "Realtime preemption locking core merged [LWN.net]". lwn.net. Retrieved 2023-02-09.

[4] "The future of realtime Linux". LWN.net. Retrieved 2023-02-09.

[5] Proven, Liam. "Real-time Ubuntu 22.04: What you need to know". The Register. Retrieved 2023-02-20.

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