安裝 Tuned

1. 確認 yum repository 已設定好，執行 yum install tuned 安裝 tuned 套件。系統預設已安裝。

   [root@kvm10 ~]# yum install tuned
   Last metadata expiration check: 2:59:38 ago on Wed 06 Nov 2019 02:49:34 PM CST.
   Package tuned-2.10.0-15.el8.noarch is already installed.
   Dependencies resolved.
   Nothing to do.
   Complete!
   

2. 安裝好後，/etc/tuned 目錄儲存配置檔，其中 tuned-main.conf 是主配置檔。

   [root@kvm10 ~]# ll /etc/tuned 
   total 20
   -rw-r--r--. 1 root root   14 Nov  6 14:39 active_profile
   -rw-r--r--. 1 root root 1111 Jul  5  2018 bootcmdline
   -rw-r--r--. 1 root root    5 Nov  6 14:39 profile_mode
   drwxr-xr-x. 2 root root 4096 May 11 23:55 recommend.d
   -rw-r--r--. 1 root root 1197 May 11 23:55 tuned-main.conf
   

3. /usr/lib/tuned 目錄儲存所有配置文件 (profiles) 的目錄。

   [root@kvm10 ~]# ll /usr/lib/tuned/
   total 56
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 balanced
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 desktop
   -rw-r--r--. 1 root root 14413 May 11 23:55 functions
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 latency-performance
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 network-latency
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 network-throughput
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 powersave
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 recommend.d
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 throughput-performance
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 virtual-guest
   drwxr-xr-x. 2 root root  4096 Nov  5 17:12 virtual-host