Process Scheduling

What is the data structure (the thing in RAM) that stores all the data, instructions and registers about a process?

Why does the PCB need to store the PC value?

• To return to the last instruction that was run

• To start over in the program

• All registers must be saved in a von Neumann machine

• In case the power goes out

What are the possible process states?

• Ready

• Running

• New

• Blocked

• Terminated

What are reasons for having good process scheduling

• To maximize use of CPU

• To speed up computer efficiency

• So that user actions have good response time

• To allow fairness for processes of discriminated companies

• To speed up HDD download time

What would cause a process to go to the blocked/waiting state?

• waiting for user input

• waiting for HDD

• waiting for internet response/download

• another process is waiting

• process finished the running time slice

When a PCB is being loaded from secondary memory to main memory, what is the process state?

• New

• Ready

• Running

• Waiting

After a process has finished its time-slice in the CPU, typically which state does it go to?

• New

• Ready

• Running

• Waiting/Blocked

• Terminated

The ready state means that the PCB is _____________

• in the queue for the CPU

• now being processed by the CPU

• saving data to disk

• loading data from disk

• updating information in main memory

For one process to be read by multiple cores, it has to be broken up into __________

One process can be broken up into multiple __________