"Linux/RT is a tool for developing and testing embedded and
non-embedded real-time applications. TimeSys, the maker of
Linux/RT, suggested several application domains where Linux/RT
could be used. Application domains suggested include industrial
automation, process control, telecommunications, web servers,
avionics and others."
"According to the vendor, the architecture of Linux/RT offers
Linux resilience and stability while running real-time
applications. To make the architecture real, TimeSys added a few
additional calls to their release of Linux and used a real-time
resource kernel (RK). As a loadable kernel module (LKM), the
real-time RK interacts with the Linux kernel. The Linux kernel
interacts with the hardware. Using this architecture, the resource
kernel can take advantage of all existing Linux hardware drivers.
Existing applications continue to interact with the Linux kernel,
while real-time applications interact with the real-time kernel
module. With this approach, the whole system will not crash if a
real-time application process hangs or crashes. It also means
pre-existing (legacy) Linux applications can run along side the
real-time application. The RK module may be loaded or unloaded like
any other LKM."
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