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EE Times: Team takes different path to real-time Linux

Jul 05, 2000, 22:25 (2 Talkback[s])
(Other stories by Craig Matsumoto)

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"Dubbed RTLinux, the OS doesn't try to change Linux into an RTOS, but instead provides a homemade RTOS kernel that incorporates Linux as a low-priority thread. Thus the RTOS stays as small and streamlined as possible — a principal goal of RTLinux's creators — while retaining Linux as the basis for common applications."

"June 15 marked the pre-beta release of RTLinux version 3.0, which is compatible with the still-in-progress 2.4 version of the Linux kernel as well as the current 2.2 version. In addition to writing for the X86 platform, the RTLinux crew finished a PowerPC port in November, and more recently completed a port for the Alpha microprocessor."

"...RTLinux is flexible with which Linux distribution it uses — any standard distribution will do. ... With RTLinux on an X86 platform, interrupt handlers can spring into action within 15 microseconds of the detection of a hardware interrupt, compared with 600 microseconds for standard Linux. That time window is actually determined by hardware and will improve as processors get faster..."

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