OS (Operating System Hierachy)
2010-06-25 12:54
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1. Window系统的内核层次
http://home.phpchina.com/space.php?uid=121310&do=blog&id=98860
此文中的精华可成:
“层次是横向的概念,而模块是纵向的概念”
“一种称为“剥夺式(Preemptive)”,或称“抢占式”,意思是只要有优先级更高的线程就绪,哪怕CPU已经在为别的优先级较低的线程所用而且无意主动让路,也要立即把它夺过来;另一种是“非剥夺式(Non-Preemptive)”,或称“不抢占式”,如果CPU已经在执行别的线程,就先忍一忍,等待适当的机会”
"与Linux相比,Windows的内核还有个明显的不同,就是其内核的相当一部分页面是可倒换的。... ...
但是,在Linux中,属于内核的页面无论是用于代码还是数据(用于文件内容缓存的除外),是不受倒换的。"
http://home.phpchina.com/space.php?uid=121310&do=blog&id=98860
此文中的精华可成:
“层次是横向的概念,而模块是纵向的概念”
“一种称为“剥夺式(Preemptive)”,或称“抢占式”,意思是只要有优先级更高的线程就绪,哪怕CPU已经在为别的优先级较低的线程所用而且无意主动让路,也要立即把它夺过来;另一种是“非剥夺式(Non-Preemptive)”,或称“不抢占式”,如果CPU已经在执行别的线程,就先忍一忍,等待适当的机会”
"与Linux相比,Windows的内核还有个明显的不同,就是其内核的相当一部分页面是可倒换的。... ...
但是,在Linux中,属于内核的页面无论是用于代码还是数据(用于文件内容缓存的除外),是不受倒换的。"
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