一个核心CPU一次可以执行2个任务吗？ [英] Can a single core CPU execute 2 tasks at a time?

问题描述

我读了很多，但意见不一。

我想知道：



1.单核CPU执行2个任务一次：

time1 = task1 + task2



2.单核CPU使用上下文切换按队列执行2个任务：

time1 = task1

time2 = task2



什么是对的？

I have read much, but opinions are different.
I wanna know:

1. A single core CPU executes 2 tasks at a time:
time1 = task1 + task2

2. A single core CPU executes 2 tasks by queue using context switching:
time1 = task1
time2 = task2

What is right?

推荐答案

单个核心可以一次执行一个任务：但它可以将任务切换到 出现 以同时执行多个任务。

A single core can execute one task at a time: but it can switch tasks to appear to be executing many tasks simultaneously.

它可以让你等到另一个任务时完成一项任务。

It can do one task while making you wait for another.

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