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Designers of embedded systems have become increasingly interested in the Linux operating system, largely because of its open source model. However, the standard Linux kernel can't deliver the hard realtime capabilities - such as predictable response times and microsecond latencies - that a large number of embedded systems demand. Several products have emerged to fill the Linux realtime gap, with mixed success.
In this paper, we look at an alternate approach - using a POSIX-based RTOS designed specifically for embedded systems - that not only allows Linux developers to keep their programming model, but also maintains the key advantages of Linux's open source model. |
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