Published at LXer:

While the use of Linux continues to sail along at a nice clip, the number of people kicking the tires is shrinking, for all the right reasons. While Linux and complex RTOS products offer such attractive capabilities, they're also correspondingly difficult to learn and use due to these robust arrays of services. Linux includes hundreds of system services, virtual memory, and tens of millions of lines of open-source code. High-end commercial RTOSs also include many features and lots of code, making them (and Linux) a challenge to master.

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