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Article Id: WHEBN0000604013
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Title: Rtai  
Author: World Heritage Encyclopedia
Language: English
Subject: Xenomai, Orchestra Control Engine, Real-time operating systems, Linux kernel, Comparison of real-time operating systems
Collection: Linux Kernel, Real-Time Operating Systems
Publisher: World Heritage Encyclopedia


Stable release 4.1[1] / 9 March 2015 (2015-03-09)
Development status Active
Platform IA-32, x86-64, PowerPC, ARM and MIPS
Website .org.rtaiwww

RTAI, abbreviated from real-time application interface, is a real-time extension for the Linux kernel, which lets users write applications with strict timing constraints for Linux. Like Linux itself the RTAI software is a community effort. RTAI provides deterministic response to interrupts, POSIX-compliant and native RTAI real-time tasks. RTAI supports several architectures, including IA-32 (with and without FPU and TSC), x86-64, PowerPC, ARM (StrongARM and ARM7: clps711x-family, Cirrus Logic EP7xxx, CS89712, PXA25x), and MIPS.

RTAI consists mainly of two parts: an Adeos-based patch to the Linux kernel which introduces a hardware abstraction layer, and a broad variety of services which make lives of real-time programmers easier. RTAI versions over 3.0 use an Adeos kernel patch, slightly modified in the x86 architecture case, providing additional abstraction and much lessened dependencies on the "patched" operating system. Adeos is a kernel patch comprising an Interrupt Pipeline where different Operating System Domains register interrupt handlers. This way, RTAI can transparently take over interrupts while leaving the processing of all others to Linux. Use of Adeos also frees RTAI from patent restrictions caused by RTLinux project.

See also


  1. ^ "RTAI - the RealTime Application Interface for Linux". Retrieved 11 August 2015. 

External links

  • Official website
  • Univ. di Padova - RTAI / Xenomai presentation

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