The data processing system 18, wherein execution of the programs causes the processor to perform the additional step of monitoring M channels that have a greatest importance among the other channels at {HEAD ~ any moment} in {TAIL ~ time}, wherein the importance is determined according to the respective second monitoring rates thereof 
The data processing system 18 , wherein execution of the programs causes the processor to perform the additional step of monitoring M channels that have a greatest importance among the other channels at { HEAD ~ any moment } in { TAIL ~ time } , wherein the importance is determined according to the respective second monitoring rates thereof
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