CSE 330 CPU SCHEDULING MOD 5

TO FREEDOM WE FLY

CPU burst

a period where a process is actively computing on the CPU

I/O burst

a period where a process is waiting on disk, network, etc

Short-term scheduler

the part of the OS that picks one process from the ready queue and gives it the CPU

CPU utilization

the percentage of time the CPU is busy

Throughput

number of processes completed per unit time

Turnaround time

total time to execute a process, from start to finish

Waiting time

time a process spends sitting in the ready queue

Response time

time from request submitted to first response

Convoy effect

a short process getting stuck waiting behind a long one

Starvation

a process that may never get to run

Aging

gradually increasing a waiting process's priority over time

Time quantum

the fixed slice of CPU time a process gets before being preempted (Round Robin)

vruntime

a Linux CFS metric tracking how long a task has actually run

nice value

a Linux priority setting, ranging from -20 to 19