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Adaptive Partition Scheduler - patnaiknaresh - 10-04-2017

Adaptive Partition Scheduler

Adaptive Partition Schedulers are a relatively new type of partition scheduler, pioneered with the most recent version of the QNX operating system. Adaptive Partitioning (or AP) allows the real-time system designer to request that a percentage of processing resources be reserved for a particular subsystem (group of threads and/or processes). The operating systems priority driven pre-emptive scheduler will behave in the same way that a non-AP system would until the system is overloaded (i.e. system-wide there is more computation to perform, than the processor is capable of sustaining over the long term). During overload, the AP scheduler enforces hard limits on total run-time for the subsystems within a partition (as dictated by the allocated percentage of processor bandwidth for the particular partition). If the system is not overloaded, a partition that is allocated (for example) 10% of the processor bandwidth, can, in fact, use more than 10%, as it will borrow from the spare budget of other partitions (but will be required to pay it back later). This is very useful for the non real-time subsystems that experience variable load, since these subsystems can make use of spare budget from hard real-time partitions in order to make more forward progress than they would in a Fixed Partition Scheduler such as ARINC-653, but without impacting the hard real-time subsystems deadlines.


Adaptive Partition Scheduler - shwetha - 10-04-2017

Adaptive Partition Schedulers are a relatively new type of partition scheduler, pioneered with the most recent version of the QNX operating system. Adaptive Partitioning (or AP) allows the real-time system designer to request that a percentage of processing resources be reserved for a particular subsystem (group of threads and/or processes). The operating systems priority driven pre-emptive scheduler will behave in the same way that a non-AP system would until the system is overloaded (i.e. system-wide there is more computation to perform, than the processor is capable of sustaining over the long term). During overload, the AP scheduler enforces hard limits on total run-time for the subsystems within a partition (as dictated by the allocated percentage of processor bandwidth for the particular partition). If the system is not overloaded, a partition that is allocated (for example) 10% of the processor bandwidth, can, in fact, use more than 10%, as it will borrow from the spare budget of other partitions (but will be required to pay it back later). This is very useful for the non real-time subsystems that experience variable load, since these subsystems can make use of spare budget from hard real-time partitions in order to make more forward progress than they would in a Fixed Partition Scheduler such as ARINC-653, but without impacting the hard real-time subsystems deadlines.


Adaptive Partition Scheduler - laiju - 10-04-2017

type of partition scheduler, pioneered with the most recent version of the QNX operating system. Adaptive Partitioning (or AP) allows the real-time system designer to request that a percentage of processing resources be reserved for a particular subsystem (group of threads and/or processes). The operating systems priority driven pre-emptive scheduler will behave in the same way that a non-AP system would until the system is overloaded (i.e. system-wide there is more computation to perform, than the processor is capable of sustaining over the long term). During overload, the AP scheduler enforces hard limits on total run-time for the subsystems within a partition (as dictated by the allocated percentage of processor bandwidth for the particular partition). If the system is not overloaded, a partition that is allocated (for example) 10% of the processor bandwidth, can, in fact, use more than 10%, as it will borrow from the spare budget of other partitions (but will be required to pay it back later). This is very useful for the non real-time subsystems that experience variable load, since these subsystems can make use of spare budget from hard real-time partitions in order to make more forward progress than they would in a Fixed Partition Scheduler such as ARINC-653, but without impacting the hard real-time subsystems deadlines.


Adaptive Partition Scheduler - ashikshanu - 10-04-2017

you can refer these page details of "Adaptive Partition Scheduler"link bellow

http://seminarsprojects.net/Thread-adaptive-partition-scheduler?pid=51196#pid51196

http://seminarsprojects.net/Thread-adaptive-partition-schedular


Adaptive Partition Scheduler - ansal - 10-04-2017

hi
yopu can find out all informations about

http://seminarsprojects.net/Thread-adaptive-partition-scheduler Adaptive Partition Scheduler


Adaptive Partition Scheduler - santhoshkrbannur - 10-04-2017

Adaptive Partition Scheduler
i hav to tak seminar on dis topic..so pls help me to find some details on dis..


Adaptive Partition Scheduler - ravib446 - 10-04-2017

hai
i want full details of Adaptive partition schduler. Can u send that plz