如果说cfs是linux的一个很有创意的机制的话，那么linux中另一个创意就是nohz，我在前面已经写了好几篇关于nohz的文章了，因此本文就不再阐述代码细节了，linux的创意在于设计而不在代码，代码主要解决的问题是实用性，就像gcc一样，就是一个编译器，应用编译原理设计而出，它内部却充实着...

简单谈一点linux内核中套接字的bind机制--2.6.30内核代码的改进

在2.6.30之前的内核版本中，如果一个要求绑定随机端口的套接字在遍历了所有的哈希表中的元素之后发现没有合适的，那么直接出错返回，这里有几个问题，第一就是如果当前系统的绑定套接字已经足够多了，那么很明显的事实就是等待漫长的遍历结束之后仍然会无功而返，第二个问题就是如果付出了这么大的代价无功而返显然对...

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更新时间 2023-11-09 13:09:01

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