Real-time Linux is officially part of the kernel after decades of debate
Briefly

The merging of PREEMPT_RT into the mainline Linux kernel signifies an important step forward for real-time computing, yet it may not drastically alter desktop Linux performance.
Linus Torvalds' final approval of PREEMPT_RT during Open Source Summit Europe marks an historic advancement for real-time Linux, with implications for high-stakes applications.
While PREEMPT_RT will enhance maintenance of real-time systems, it won't necessarily speed up desktop applications; its benefits lie in critical systems monitoring and support.
Read at Ars Technica
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