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Crossroads: RTLinux: An Interview with Victor Yodaiken

Sep 29, 1999, 06:04 (1 Talkback[s])
(Other stories by Kevin Fu)

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"RTLinux is an extension to the Linux kernel for real-time control. That is, RTLinux assists timing-critical tasks to finish within hard deadlines. General Editor Kevin Fu interviews the principal architect of RTLinux and extracts advice for budding computer scientists..."

"KF: RTLinux takes an interesting stance to give Linux realtime capabilities. How do you interface RTLinux with Linux? How does this affect development of realtime programs?"

"VY: The RTLinux philosophy is that the realtime subsystem needs to be as simple and predictable and close to the raw machine as possible. So we provide a couple of ways to connect realtime tasks to ordinary Linux tasks. We split realtime applications between the part that is really realtime and the part that just needs to run fast. For Linux tasks, the realtime system can look just like a device that can read and written. You can write a realtime application as a Perl program or even a shell script that gets data from the realtime "device" and sends commands to that "device."

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