LinuxDevices.com: Whitepaper: KURT -- a Real-Time LinuxMar 25, 2000, 00:29 (0 Talkback[s])
(Other stories by Balaji S)
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"KURT (KU Real-Time Linux) is a real-time modification to the Linux operating system that allows scheduling of real-time events at the resolution of 10's of microseconds. Rather than relying on priority based scheduling or strictly periodic schedules, KURT schedules are explicitly specified by the application programmer. KURT can function in two modes: focussed mode, where only real-time processes are allowed to run; and mixed mode, where the execution of real-time processes still takes precedence, but all non-real-time processes are allowed to run within the "gaps" of the real-time schedule. KURT works on any x86 compatible platform with a time-stamp counter (Pentium processors or their equivalent)...."
"KURT Linux allows for explicit scheduling of any real-time events rather than just processes. This provides a more generic framework onto which normal real-time process scheduling is mapped. Since event scheduling is handled by the system, addition of new events such as periodic sampling data acquisition cards (video, lab equipment, etc.) is highly simplified."
"KURT introduces two modes of operation - the normal mode and the real-time mode. In normal mode, the system acts as a generic Linux system. When the kernel is running in real-time mode, it only executes real-time processes. While in real-time mode, the system can no longer be used as a generic workstation, as all of its resources are dedicated to executing its real-time responsibilities as accurately as possible."
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