sched_deadline behaviour

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I've studied the sched_deadline and i have some questions:



1) Is a portion of CPU assigned to sched_deadline algorithm at precise time intervals ?
If yes, who decide how much Utilization Factor assign to each task ?



2) Which are the task's mandatory and optional parameters that the programmer must specify so as the sched_deadline algorithm can properly work ?



3) Is it possible to respect hard real time deadlines using sched_deadline ?







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  • WRT #3: I suspect the answer is no, or else the people who wrote RTLinux would not have bothered. But I'm unsure.
    – Nick ODell
    Jul 12 at 14:57















up vote
0
down vote

favorite












I've studied the sched_deadline and i have some questions:



1) Is a portion of CPU assigned to sched_deadline algorithm at precise time intervals ?
If yes, who decide how much Utilization Factor assign to each task ?



2) Which are the task's mandatory and optional parameters that the programmer must specify so as the sched_deadline algorithm can properly work ?



3) Is it possible to respect hard real time deadlines using sched_deadline ?







share|improve this question



















  • WRT #3: I suspect the answer is no, or else the people who wrote RTLinux would not have bothered. But I'm unsure.
    – Nick ODell
    Jul 12 at 14:57













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I've studied the sched_deadline and i have some questions:



1) Is a portion of CPU assigned to sched_deadline algorithm at precise time intervals ?
If yes, who decide how much Utilization Factor assign to each task ?



2) Which are the task's mandatory and optional parameters that the programmer must specify so as the sched_deadline algorithm can properly work ?



3) Is it possible to respect hard real time deadlines using sched_deadline ?







share|improve this question











I've studied the sched_deadline and i have some questions:



1) Is a portion of CPU assigned to sched_deadline algorithm at precise time intervals ?
If yes, who decide how much Utilization Factor assign to each task ?



2) Which are the task's mandatory and optional parameters that the programmer must specify so as the sched_deadline algorithm can properly work ?



3) Is it possible to respect hard real time deadlines using sched_deadline ?









share|improve this question










share|improve this question




share|improve this question









asked Jul 12 at 13:24









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  • WRT #3: I suspect the answer is no, or else the people who wrote RTLinux would not have bothered. But I'm unsure.
    – Nick ODell
    Jul 12 at 14:57

















  • WRT #3: I suspect the answer is no, or else the people who wrote RTLinux would not have bothered. But I'm unsure.
    – Nick ODell
    Jul 12 at 14:57
















WRT #3: I suspect the answer is no, or else the people who wrote RTLinux would not have bothered. But I'm unsure.
– Nick ODell
Jul 12 at 14:57





WRT #3: I suspect the answer is no, or else the people who wrote RTLinux would not have bothered. But I'm unsure.
– Nick ODell
Jul 12 at 14:57
















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