rpm 与 yum 常用查询功能

` ldd /usr/bin/rados |awk ‘{print $3}’|grep ‘^/’ |xargs -i rpm -qf {}|xargs -i rpm -qi {} `

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笔记_CPU缓存知识

记录一下 cpu cache 相关内容,主要来自于[COOLSHELL – 与程序员相关的CPU缓存知识](https://coolshell.cn/articles/20793.html)

查看tcp 队列

查看队列溢出 netstat -s | egrep “listen|LISTEN” ;全连接队列溢出次数: 41696 times the listen queue of a socket overflowed ;半连接队列溢出次数: 41696 SYNs to LISTEN sockets dropped

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