Computer application for controlling unattended background program execution of jobs
This article is about a class of software. For the mathematical problem in Computer Science, see Job Shop Scheduling. For other uses, see Scheduling (disambiguation).
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A job scheduler is a computer application for controlling unattended background program execution of jobs.[1] This is commonly called batch scheduling, as execution of non-interactive jobs is often called batch processing, though traditional job and batch are distinguished and contrasted; see that page for details. Other synonyms include batch system, distributed resource management system (DRMS), distributed resource manager (DRM), and, commonly today, workload automation (WLA). The data structure of jobs to run is known as the job queue.
Modern job schedulers typically provide a graphical user interface and a single point of control for definition and monitoring of background executions in a distributed network of computers. Increasingly, job schedulers are required to orchestrate the integration of real-time business activities with traditional background IT processing across different operating system platforms and business application environments.
Job scheduling should not be confused with process scheduling, which is the assignment of currently running processes to CPUs by the operating system.
^Effect of Job Size Characteristics on Job Scheduling Performance
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