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%SECTION0{name=LinuxRealtime}% Can Linux handle real-time requirements? * Linux is multiuser, timesharing system * Kernels up until 2.4 are *not preemptible* (2.5 started to integrate _low latency_ and _kernel preemption_ patches) * The current 2.6 kernels include major parts of the rt-reempt patchset but still no hard real-time. * Alternatives are 1 rt-preempt patch 1 Dual kernel approach * RTAI (_Paolo Montegazza_) is GPLd * Xenomai * RT-Linux (_Victor Yodaiken_ FSM Labs) is _patented_ . Not clear if patent would stand up in court. * Two-level structure is *faster* but *more complicated*
4.4. Real-time Linux
1. Denx Training Topics
4.4.2. Real time with Adeos/Xenomai (Introduction)
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