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thread and process

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linlongchen
2020-07-06 14:37:11 +08:00
parent 40b10d260a
commit 2bbf60814e
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_posts/linux/进程线程协程/看完这篇，彻底区分进程线程协程.md
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##### 缺点
- 内核级线程切换开销较大。因为每次线程切换都要从用户态切换到内核态， 代价要比用户级线程大很多。
- 内核级线程调度开销较大。调度内核线程的代价可能和调度进程差不多昂贵，代价要比用户级线程大很多。
- 线程表是存放在操作系统固定的表格空间或者堆栈空间里，所以内核级线程的数量是有限的。

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_posts/linux/进程线程协程/进程线程协程.drawio
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