xiaowei-system/skills/devops/devops-umbrella/references/linux-mint-rtx3050-optimization.md

Linux Mint 22.3 优化清单（RTX 3050 Laptop + i5-11260H）

牧尘桌面机，Linux Mint 22.3，2026-06-15 安装后优化记录

硬件状态

项目	值
CPU	i5-11260H (12 threads)
内存	16GB
显卡	RTX 3050 Mobile, driver 595.71
磁盘	467GB (LVM), 16% used
Swap	1.9GB（用了 1.6GB — swappiness 太高）

优化命令（按顺序）

1. swappiness（减少 swap 依赖）

echo 'z1020' | sudo -S sysctl -w vm.swappiness=10
echo 'vm.swappiness=10' | sudo tee -a /etc/sysctl.d/99-swappiness.conf

2. CPU governor → performance

echo 'z1020' | sudo -S cpupower frequency-set -g performance
# 永久化
echo 'z1020' | sudo -S bash -c 'cat > /etc/default/cpupower << EOF
CPUPOWER_START_OPTS="frequency-set -g performance"
CPUPOWER_STOP_OPTS="frequency-set -g powersave"
EOF'

3. TCP BBR（网络优化）

echo 'z1020' | sudo -S sysctl -w net.core.default_qdisc=fq
echo 'z1020' | sudo -S sysctl -w net.ipv4.tcp_congestion_control=bbr

4. 磁盘 IO 优化

echo 'z1020' | sudo -S sysctl -w vm.dirty_ratio=15
echo 'z1020' | sudo -S sysctl -w vm.dirty_background_ratio=5

5. 关闭无用服务（省资源）

echo 'z1020' | sudo -S systemctl stop bluetooth
echo 'z1020' | sudo -S systemctl disable bluetooth
echo 'z1020' | sudo -S systemctl stop cups-browsed
echo 'z1020' | sudo -S systemctl disable cups-browsed
echo 'z1020' | sudo -S systemctl stop kerneloops
echo 'z1020' | sudo -S systemctl disable kerneloops

验证命令

cat /proc/sys/vm/swappiness                  # 应为 10
sysctl net.ipv4.tcp_congestion_control       # 应为 bbr
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor  # 应为 performance
nvidia-smi --query-gpu=temperature.gpu --format=csv         # GPU 温度
free -h | awk '/^Mem:/{print $7}'                           # 内存可用

已运行的服务（正常）

• thermald — 温度管理
• nvidia-persistenced — 正常 running
• NetworkManager — 正常
• new-api — 在 3000 端口