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linuxsocket缓存
linuxsocket缓存
Linux网络协议栈(二)——套接字缓存(socket buffer)
Linux网络核心数据结构是套接字缓存(socket buffer),简称skb。它代表一个要发送或处理的报文,并贯穿于整个协议栈。 1、 套接字缓存 skb由两部分组成: (1) 报文数据:它保存了实际在网络中传输的数据; (2) 管理数据:供内核处理报文的额外数据,这些数据构成了协议之间交换的控制信息。 当应用程序向一个socket传输数据之后,该socket将创建相应的套...
Linux内核协议栈的socket查找缓存路由机制
是查路由表快呢?还是查socket哈希表快?这不是问题的根本。问题的根本是怎么有效利用这两者,让两者成为合作者而不是竞争者。这是怎么回事? 我们知道,如果一个数据包要到达本地,那么它要经过两次查找过程(暂时不考虑conntrack):IP层查找路由和传输层查找socket。怎么合并这两者。 Linux内核协议栈采用了一种办法:在socket中增加一个dst字段作为缓存路由...
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Alibaba Cloud Linux 2
Alibaba Cloud Linux 2(原Aliyun Linux 2) 是阿里云推出的下一代 Linux 发行版,它为云上应用程序环境提供 Linux 社区的最新增强功能,在提供云上最佳用户体验的同时,也针对阿里云基础设施做了深度的优化。
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Alibaba Cloud Linux 2
Alibaba Cloud Linux 2(原Aliyun Linux 2) 是阿里云推出的下一代 Linux 发行版,它为云上应用程序环境提供 Linux 社区的最新增强功能,在提供云上最佳用户体验的同时,也针对阿里云基础设施做了深度的优化。
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