嵌入式 Linux进程含义知多少
答案:2 悬赏:40 手机版
解决时间 2021-02-06 08:43
- 提问者网友：做自己de王妃
- 2021-02-05 20:33
嵌入式 Linux进程含义知多少
最佳答案
- 五星知识达人网友：骨子里都是戏
- 2021-02-05 22:02
Linux uses kswapd for virtual memory management such that pages that have been recently accessed are kept in memory and less active pages are paged out to disk.
(what is a page?)…Linux uses manages memory in units called pages.
So,the kswapd process regularly decreases the ages of unreferenced pages…and at the end they are paged out(moved out) to disk
系统每过一定时间就会唤醒kswapd，看看内存是否紧张，如果不紧张，则睡眠，在kswapd中，有2个阀值,pages_hige和pages_low,当空闲内存页的数量低于pages_low的时候,kswapd进程就会扫描内存并且每次释放出32个free pages,直到free page的数量到达pages_high.
(what is a page?)…Linux uses manages memory in units called pages.
So,the kswapd process regularly decreases the ages of unreferenced pages…and at the end they are paged out(moved out) to disk
系统每过一定时间就会唤醒kswapd，看看内存是否紧张，如果不紧张，则睡眠，在kswapd中，有2个阀值,pages_hige和pages_low,当空闲内存页的数量低于pages_low的时候,kswapd进程就会扫描内存并且每次释放出32个free pages,直到free page的数量到达pages_high.
全部回答
- 1楼网友：有你哪都是故乡
- 2021-02-05 22:22
都是差不多的原理，嵌入式的linux也是裁剪出来的最小系统带gui
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
大家都在看
推荐资讯