Scheduling
Inden for databehandling er scheduling (dansk term: resurseplanlægning) handlingen at tildele resurser til at udføre tasks.[1] Resurserne kan være processorer, netværkslinks eller udvidelseskort. Tasks kan være tråde, processer eller datastrømme.
Schedulering-aktiviteten udføres af en proces kaldet en scheduler. Schedulers er ofte designet til at holde alle computerresurser beskæftiget (som i belastningsbalancering), tillade flere brugere at dele systemresurser effektivt eller for at opnå en målrettet servicekvalitet.[1]
Schedulering er grundlæggende for selve beregningen og en iboende del af udførelsesmodellen for et computersystem; konceptet med scheduling gør det muligt at have computermultitasking med en enkelt central processing unit (CPU).
Styresystemers schedulers
Referencer
- ^ a b people.cs.rutgers.edu: Process Scheduling, backup
- ^ wiki.minix3.org: Userspace scheduling, backup Citat: "...Scheduling in Minix is simple multi-priority round robin..."
- ^ minixnitc.github.io: Process Scheduling, backup Citat: "...Minix3 uses multilevel queuing system for scheduling..."
- ^ multicians.org: The Multics Scheduler, backup Citat: "... The initial proposal for this set of changes was in MTB-193 Priority Scheduler (1975-05-19)..."
- ^ doc.redox-os.org: Scheduling on Redox, backup Citat: "...The Redox kernel uses a scheduling algorithm called Round Robin..."
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