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1) Arrival Time (AT)

1)到達時間(AT)

The time when the process arrives into the running state is called as the Arrival time of the process. In simple words, the time at which any process enter the CPU is known as the arrival time.

流程到達運行狀態的時間稱為流程的到達時間。 簡而言之，任何進程進入CPU的時間稱為到達時間。

2) Completion Time (CT)

2)完成時間(CT)

The time when the Process is done with all its execution and it enters the termination state is called as the completion time of the process. It can be also defined as the time when a process ends.

流程完成所有執行并進入終止狀態的時間稱為流程的完成時間。 也可以將其定義為進程結束的時間。

3) Burst Time (BT)

3)爆發時間(BT)

The time for which the process needs to be in the running state is known as the burst time of the process. We can also define it as the time which a process requires for execution is the Burst time of the process.

流程需要處于運行狀態的時間稱為流程的爆發時間。 我們還可以將其定義為流程執行所需的時間是該流程的爆發時間。

4) Turn Around Time (TAT)

4)周轉時間(TAT)

Turn Around time can be defined as the total time the process remains in the main memory of the system. The Ready state, Waiting for state and the Running State, together make up the main memory of the system. So, the time for which the process remains in these states is known as the Turn Around Time of the process. In simple words, it is the time that a process spends after entering the ready state and before entering the termination state.

周轉時間可以定義為進程保留在系統主內存中的總時間。 就緒狀態，等待狀態和運行狀態共同構成系統的主內存。 因此，過程保持在這些狀態下的時間稱為過程的周轉時間。 簡而言之，它是指流程在進入就緒狀態之后和進入終止狀態之前所花費的時間。

It can be calculated as follows:

可以計算如下：

Turn Around Time = Completion Time – Arrival TimeTAT = CT - AT

5) Waiting Time (WT)

5)等待時間(WT)

The time for which a process waits for going into the running state. It is the sum of the time spent by the process in the ready state and the waiting state. Another way of calculating it is as follows:

進程等待進入運行狀態的時間。 它是過程在就緒狀態和等待狀態下花費的時間的總和。 另一種計算方法如下：

Waiting Time= Turn Around Time – Burst TimeWT = TAT – BT

6) Response Time

6)響應時間

The time difference between the first time a process goes into the running state and the arrival time of the process is called the response time of the process.

流程第一次進入運行狀態與流程到達時間之間的時間差稱為流程響應時間。

7) Gant Chart

7)甘特圖

The Gant chart is used to represent the currently executing process at every single unit of time. This time unit is the smallest unit of time in the processor.

Gant圖表用于表示每個單個時間單位的當前執行過程。 該時間單位是處理器中最小的時間單位。

翻譯自: https://www.includehelp.com/operating-systems/important-terms-used-in-process-scheduling.aspx

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