By scheduling the non real-time tasks earlier while still meeting deadlines for the real-time tasks, the overall system performance can be improved. In particular, we believe that the variability in the execution time requirements of real-time tasks can be effectively leveraged to reduce response times of non real-time tasks. We propose a novel processor sharing algorithm where the processor share of RT jobs increases with their progress based on the empirical probability distribution of execution times of real-time tasks, to adaptively schedule variable requirement real-time to maximize the minimum expected service rate to non real-time tasks at any instant.
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