Process Description and Control
Each process in the system is represented by a data structure called a Process Control Block (PCB), or Process Descriptor in Linux, which performs the same function as a traveller's passport. The PCB contains the basic information about the job including:
- What it is
- Where it is going
- How much of its processing has been completed
- Where it is stored
- How much it has “spent” in using resources
Process Identification: Each process is uniquely identified by the user’s identification and a pointer connecting it to its descriptor.
Process Status: This indicates the current status of the process; READY, RUNNING, BLOCKED, READY SUSPEND, BLOCKED SUSPEND.
Process State: This contains all of the information needed to indicate the current state of the job.
Accounting: This contains information used mainly for billing purposes and for performance measurement. It indicates what kind of resources the process has used and for how long.
Read more about this topic: Process Management (computing)
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