<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qq_41746933的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qq_41746933</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qq_41746933]]></copyright><item><title><![CDATA[硬盘-机械盘与SSD]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/139266856</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/139266856</guid><author>qq_41746933</author><pubDate>Wed, 29 May 2024 10:36:52 +0800</pubDate><description><![CDATA[主要内容1、HDD SSD2、大小df du ncdu fdisk3、raid 与坏盘检测：MegaCli、storcli、sas3ircu、arcconf。]]></description><category></category></item><item><title><![CDATA[硬盘IO-性能]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/139254224</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/139254224</guid><author>qq_41746933</author><pubDate>Tue, 28 May 2024 09:57:24 +0800</pubDate><description><![CDATA[主要内容1、iostat -x -m 1 实时2、iotop 进程3、sar -dp 历史]]></description><category></category></item><item><title><![CDATA[【网卡网络】拓扑与连接]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/139060767</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/139060767</guid><author>qq_41746933</author><pubDate>Mon, 20 May 2024 17:12:09 +0800</pubDate><description><![CDATA[主要内容1、网关地址查询route -n2、查询对应交换机lldptool3、全连接半连接netstat。]]></description><category></category></item><item><title><![CDATA[【网卡网络】网络包和IP域名相关]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/139059753</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/139059753</guid><author>qq_41746933</author><pubDate>Mon, 20 May 2024 11:19:00 +0800</pubDate><description><![CDATA[主要内容1、ping&telnet 通不通2、mtr丢包3、nslookup&dig IP与域名。]]></description><category></category></item><item><title><![CDATA[【网卡网络】流量与网卡配置]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/139057810</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/139057810</guid><author>qq_41746933</author><pubDate>Mon, 20 May 2024 10:51:36 +0800</pubDate><description><![CDATA[主要内容1、iftop 流量2、ethtool 网卡配置3、网卡开启关闭]]></description><category></category></item><item><title><![CDATA[内存Memory Swap Buffer Cache]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/138589898</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/138589898</guid><author>qq_41746933</author><pubDate>Thu, 09 May 2024 00:08:49 +0800</pubDate><description><![CDATA[1、swap 开关，创建
2、buffer 清空/释放，和cache 的区别与联系
3、内存条相关信息dmidecode
4、内存使用free 和/proc/meminfo
5、 进程使用内存pmap]]></description><category></category></item><item><title><![CDATA[查看进程和线程]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/138589267</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/138589267</guid><author>qq_41746933</author><pubDate>Wed, 08 May 2024 23:17:10 +0800</pubDate><description><![CDATA[1、进程ps，pidstat，netstat
2、线程ps -T，top -H，htop]]></description><category></category></item><item><title><![CDATA[服务器宕机排查]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/138496415</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/138496415</guid><author>qq_41746933</author><pubDate>Mon, 06 May 2024 15:22:35 +0800</pubDate><description><![CDATA[比如cpu 内存 带宽跑满，可观察监控，再宕机前的资源消耗情况，等待一会，看能否恢复，此时机器比较卡顿，能ping 通，尝试登陆，再能登陆的时候，可能需要kill或者重启进程。实在不行，只能让机房强制重启。，在宕机前有没有指标异常，比如CPU或内存突增，可能短暂突发上量超过系统承载能力；，分析宕机时间前后的系统日志，看看是否有明显的报错，比如oom或内核bug；1、真死机：服务器确实宕机了，机器登陆不上，ping 不通，需要让机房重启。，或者登录远控查看系统日志，比如内存故障等，可能需要更换；]]></description><category></category></item><item><title><![CDATA[Linux目录结构]]></title><link>https://blog.youkuaiyun.com/qq_41746933/article/details/138357361</link><guid>https://blog.youkuaiyun.com/qq_41746933/article/details/138357361</guid><author>qq_41746933</author><pubDate>Tue, 30 Apr 2024 22:05:35 +0800</pubDate><description><![CDATA[bin 各种命令etc 配置lib 库opt 额外安装的软件proc 有很多文件，实际是占用的内存，可获取到很多系统信息，主机监控数据很多来自这里tmp 临时文件var 主要是日志。]]></description><category></category></item></channel></rss>