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35. Process Priorities and Scheduling > Realtime Process Scheduling API

Realtime Process Scheduling API

We now look at the various system calls constituting the realtime process scheduling API. These system calls allow us to control process scheduling policies and priorities.

Note

Although realtime scheduling has been a part of Linux since version 2.0 of the kernel, several problems persisted for a long time in the implementation. A number of features of the implementation remained broken in the 2.2 kernel, and even in early 2.4 kernels. Most of these problems were rectified by about kernel 2.4.20.

Realtime Priority Ranges

The sched_get_priority_min() and sched_get_priority_max() system calls return the available priority range for a scheduling policy.


  

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