现场
PID PPID USER %CPU %MEM RSS VSZ SWAP NI STAT THR ELAPSED COMMAND WCHAN
3412654 3412606 x99 180 0.8 324.2M 1.5G 0K 0 Sl 30 00:55 docker-buildx futex_do_wait
2795 2331 gdm 0.7 0.6 246.4M 4.8G 42.6M 0 Sl+ 28 50-22:04:46 gnome-shell 0
2025 1 root 0.2 0.5 233.6M 4.7G 16.6M 0 Ssl 44 50-22:04:48 dockerd 0
3016175 3016051 x99 0.1 0.1 64.9M 1.4G 33.4M 0 Ssl 8 14:41:03 gitea futex_do_wait
3012708 3012683 root 0.5 0.1 57.1M 1.4G 5.4M 0 Ssl 8 14:45:41 mihomo 0
1600 1 root 0.2 0.1 54.4M 4.0G 4.5M 0 Ssl 40 50-22:04:51 containerd 0
511 1 root 0.0 0.1 46.1M 161.9M 1.1M -1 S<s 1 50-22:04:58 systemd-journal 0
3012758 3012733 root 0.0 0.0 37.8M 10.7G 5.6M 0 Ssl 7 14:45:41 node 0
3191 2751 root 0.3 0.0 35.2M 1.5G 11.6M 0 Sl 10 50-22:04:46 tailscaled 0
1260112 1 root 0.0 0.0 32.2M 3.5G 4.8M 0 Ssl 33 27-14:39:10 snapd 0
x99@x99:/www/llama$ free -h
total used free shared buff/cache available
内存： 39Gi 2.5Gi 18Gi 444Ki 19Gi 36Gi
交换： 8.0Gi 670Mi 7.3Gi
停用桌面（设置层）
# 确认当前默认启动目标是图形界面
x99@x99:/www/llama$ systemctl get-default
graphical.target
# 设为多用户（纯命令行）模式
x99@x99:/www/llama$ sudo systemctl set-default multi-user.target
Created symlink /etc/systemd/system/default.target → /usr/lib/systemd/system/multi-user.target.
# 重启才会生效
运行桌面（临时）
sudo systemctl isolate graphical.target
卸载桌面（持久）
sudo apt purge ubuntu-desktop gnome-shell gdm3
sudo apt autoremove