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In a real-time Linux system, the critical sections are thought to be one of the main factors causing problems with the start of real-time tasks. Traditional approaches for overcoming this issue either provide less of a guarantee on the worst-case latency time of real-time tasks, or have heavy overhead on normal Linux tasks. In this paper, to guarantee the start time of a real-time task, the execution...
In real-time operating systems, timer interrupts are usually used for indicating when a real-time task should be started. Critical sections with interrupts disabled can, however, cause an unacceptable delay in the execution of these tasks. Existing approaches for overcoming this issue either require modifications to many places in the kernel source or introduce a new structural design. In this paper,...
In a real-time Linux system, the critical sections are known as the main factor delaying the execution of real-time tasks. Traditional approaches to overcoming this issue have given less consideration to both real-time and non-real-time tasks. In this paper, we propose a new lock management mechanism to improve the real-time performance with a small penalty for non-real-time tasks. Using this mechanism,...
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