脚本
请注意，调参后能跑多少速度是由你的网络环境和线路的优劣决定的，线路垃圾再怎么调也没用
注意：每个时段都会不一样，至于效果嘛，就当个娱乐看吧。
脚本:
curl -sS -O https://raw.githubusercontent.com/woniu336/open_shell/main/network_optimizer.sh && chmod +x network_optimizer.sh && ./network_optimizer.sh
脚本特色：
自动获取网口名称
仅替换核心参数，不影响原有的 sysctl.conf其余参数
可恢复成原始设置
只需要上调和下调带宽大小即可
查看配置实际加载顺序: 最后加载的会覆盖前面的参数
sudo sysctl --system
验证是否应用了新的参数
sysctl -a | grep net.ipv4.tcp_rmem
sysctl -a | grep net.ipv4.tcp_wmem
服务端安装
apt update
apt install iperf3
防火墙放行端口
sudo ufw allow 5201/tcp
sudo ufw allow 5201/udp
使用命令
iperf3 -s
============
客户端下载：
https://github.com/ar51an/iperf3-win-builds/releases/download/3.17.1/iperf-3.17.1-win64.zip
客户端使用命令
iperf3 -c 服务端ip -R -t 30 -p 5201
多线程
iperf3 -c 服务端ip -p 5201 -t 30 -P 10 -R
然后在本机发起测速。其中 -c 参数表示客户端并指定测速服务器地址，-p 指定服务器端口，-t 指定测试时长（单位秒），-P 指定并发连接数（越高越能测试到速度极限），-R 表示下载测速（不加参数则测试上传速度）。如果要测试 UDP 连接，追加 -u 参数。
实战
- vmiss伦敦9929
我是在晚上11点左右测试的（高峰期），我的vmiss-伦敦9929，上行带宽200 Mbps，使用脚本限制带宽，我从180下调到150，来回反复测试，每次重传都非常的高，我干脆把带宽下调到100，惊喜来了，重传控制在了100以内，反复测试了几次都是如此
ovh-加拿大
原本的100M带宽口子，我限制在70M，
=========
vmiss伦敦9929:
Server listening on 5201 (test #15)
-----------------------------------------------------------
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 582 KBytes 4.77 Mbits/sec 0 145 KBytes
[ 5] 1.00-2.00 sec 8.18 MBytes 68.6 Mbits/sec 0 1.90 MBytes
[ 5] 2.00-3.00 sec 27.5 MBytes 231 Mbits/sec 0 7.39 MBytes
[ 5] 3.00-4.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.14 MBytes
[ 5] 4.00-5.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.38 MBytes
[ 5] 5.00-6.00 sec 12.5 MBytes 105 Mbits/sec 0 6.25 MBytes
[ 5] 6.00-7.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.25 MBytes
[ 5] 7.00-8.00 sec 11.2 MBytes 94.4 Mbits/sec 4 6.25 MBytes
[ 5] 8.00-9.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.24 MBytes
[ 5] 9.00-10.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.25 MBytes
[ 5] 10.00-10.22 sec 2.50 MBytes 93.3 Mbits/sec 0 6.25 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.22 sec 119 MBytes 97.4 Mbits/sec 4 sender
-----------------------------------------------------------
Server listening on 5201 (test #16)
-----------------------------------------------------------
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 897 KBytes 7.35 Mbits/sec 0 167 KBytes
[ 5] 1.00-2.00 sec 5.37 MBytes 45.1 Mbits/sec 0 1.45 MBytes
[ 5] 2.00-3.00 sec 27.5 MBytes 231 Mbits/sec 0 7.02 MBytes
[ 5] 3.00-4.00 sec 12.5 MBytes 105 Mbits/sec 0 5.99 MBytes
[ 5] 4.00-5.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.00 MBytes
[ 5] 5.00-6.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.71 MBytes
[ 5] 6.00-7.00 sec 12.5 MBytes 105 Mbits/sec 0 5.94 MBytes
[ 5] 7.00-8.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.94 MBytes
[ 5] 8.00-9.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.93 MBytes
[ 5] 9.00-10.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.94 MBytes
[ 5] 10.00-11.00 sec 10.0 MBytes 83.9 Mbits/sec 35 5.94 MBytes
[ 5] 11.00-12.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.95 MBytes
[ 5] 12.00-13.00 sec 10.0 MBytes 83.9 Mbits/sec 0 5.93 MBytes
[ 5] 13.00-14.00 sec 12.5 MBytes 105 Mbits/sec 21 5.94 MBytes
[ 5] 14.00-15.00 sec 11.2 MBytes 94.4 Mbits/sec 10 5.86 MBytes
[ 5] 15.00-16.00 sec 11.2 MBytes 94.4 Mbits/sec 13 5.89 MBytes
[ 5] 16.00-17.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.84 MBytes
[ 5] 17.00-18.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.65 MBytes
[ 5] 18.00-19.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.94 MBytes
[ 5] 19.00-20.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.95 MBytes
[ 5] 20.00-20.22 sec 2.50 MBytes 97.0 Mbits/sec 0 5.95 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-20.22 sec 229 MBytes 94.9 Mbits/sec 79 sender
-----------------------------------------------------------
Server listening on 5201 (test #17)
-----------------------------------------------------------
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 582 KBytes 4.77 Mbits/sec 0 150 KBytes
[ 5] 1.00-2.00 sec 8.31 MBytes 69.7 Mbits/sec 0 2.08 MBytes
[ 5] 2.00-3.00 sec 26.2 MBytes 220 Mbits/sec 6 7.24 MBytes
[ 5] 3.00-4.00 sec 12.5 MBytes 105 Mbits/sec 0 6.09 MBytes
[ 5] 4.00-5.00 sec 7.50 MBytes 62.9 Mbits/sec 54 2.59 MBytes
[ 5] 5.00-6.00 sec 13.8 MBytes 115 Mbits/sec 47 6.14 MBytes
[ 5] 6.00-7.00 sec 10.0 MBytes 83.9 Mbits/sec 0 6.18 MBytes
[ 5] 7.00-8.00 sec 12.5 MBytes 105 Mbits/sec 0 6.19 MBytes
[ 5] 8.00-9.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.15 MBytes
[ 5] 9.00-10.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.09 MBytes
[ 5] 10.00-11.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.09 MBytes
[ 5] 11.00-12.00 sec 12.5 MBytes 105 Mbits/sec 0 5.47 KBytes
[ 5] 12.00-13.00 sec 6.25 MBytes 52.4 Mbits/sec 0 5.64 MBytes
[ 5] 13.00-14.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.19 MBytes
[ 5] 14.00-15.00 sec 10.0 MBytes 83.9 Mbits/sec 20 2.48 MBytes
[ 5] 15.00-16.00 sec 12.5 MBytes 105 Mbits/sec 0 6.13 MBytes
[ 5] 16.00-17.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.18 MBytes
[ 5] 17.00-18.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.20 MBytes
[ 5] 18.00-19.00 sec 11.2 MBytes 94.4 Mbits/sec 3 6.18 MBytes
[ 5] 19.00-20.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.19 MBytes
[ 5] 20.00-20.22 sec 2.50 MBytes 96.5 Mbits/sec 0 6.19 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-20.22 sec 225 MBytes 93.4 Mbits/sec 130 sender
-----------------------------------------------------------
Server listening on 5201 (test #18)
-----------------------------------------------------------
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 897 KBytes 7.35 Mbits/sec 0 167 KBytes
[ 5] 1.00-2.00 sec 5.37 MBytes 45.1 Mbits/sec 0 1.44 MBytes
[ 5] 2.00-3.00 sec 28.8 MBytes 241 Mbits/sec 0 6.99 MBytes
[ 5] 3.00-4.00 sec 10.0 MBytes 83.9 Mbits/sec 0 5.44 MBytes
[ 5] 4.00-5.00 sec 12.5 MBytes 105 Mbits/sec 0 5.93 MBytes
[ 5] 5.00-6.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.78 MBytes
[ 5] 6.00-7.00 sec 8.75 MBytes 73.4 Mbits/sec 21 5.70 MBytes
[ 5] 7.00-8.00 sec 12.5 MBytes 105 Mbits/sec 0 6.00 MBytes
[ 5] 8.00-9.00 sec 11.2 MBytes 94.4 Mbits/sec 0 6.01 MBytes
[ 5] 9.00-10.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.95 MBytes
[ 5] 10.00-11.00 sec 11.2 MBytes 94.4 Mbits/sec 0 5.97 MBytes
[ 5] 11.00-12.00 sec 12.5 MBytes 105 Mbits/sec 0 5.97 MBytes
[ 5] 12.00-13.00 sec 10.0 MBytes 83.9 Mbits/sec 39 5.94 MBytes
[ 5] 13.00-14.00 sec 12.5 MBytes 105 Mbits/sec 2 5.91 MBytes
[ 5] 14.00-15.00 sec 10.0 MBytes 83.9 Mbits/sec 0 5.95 MBytes
[ 5] 15.00-16.00 sec 12.5 MBytes 105 Mbits/sec 0 5.97 MBytes
[ 5] 16.00-17.00 sec 8.75 MBytes 73.4 Mbits/sec 0 5.94 MBytes
[ 5] 17.00-18.00 sec 8.75 MBytes 73.4 Mbits/sec 0 4.91 MBytes
[ 5] 18.00-19.00 sec 11.2 MBytes 94.4 Mbits/sec 0 4.92 MBytes
[ 5] 19.00-20.00 sec 8.75 MBytes 73.4 Mbits/sec 15 5.44 MBytes
[ 5] 20.00-20.23 sec 0.00 Bytes 0.00 bits/sec 6 5.95 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-20.23 sec 219 MBytes 90.7 Mbits/sec 83 sender
-----------------------------------------------------------
Server listening on 5201 (test #19)
=========
ovh- 加拿大
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 520 KBytes 4.26 Mbits/sec 0 118 KBytes
[ 5] 1.00-2.00 sec 2.76 MBytes 23.2 Mbits/sec 0 751 KBytes
[ 5] 2.00-3.00 sec 22.5 MBytes 189 Mbits/sec 0 5.59 MBytes
[ 5] 3.00-4.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.00 MBytes
[ 5] 4.00-5.00 sec 8.75 MBytes 73.4 Mbits/sec 0 4.66 MBytes
[ 5] 5.00-6.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.62 MBytes
[ 5] 6.00-7.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.63 MBytes
[ 5] 7.00-8.00 sec 8.75 MBytes 73.4 Mbits/sec 0 4.49 MBytes
[ 5] 8.00-9.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.38 MBytes
[ 5] 9.00-10.00 sec 8.75 MBytes 73.4 Mbits/sec 0 4.40 MBytes
[ 5] 10.00-11.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.60 MBytes
[ 5] 11.00-12.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.61 MBytes
[ 5] 12.00-13.00 sec 8.75 MBytes 73.4 Mbits/sec 0 4.62 MBytes
[ 5] 13.00-14.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.43 MBytes
[ 5] 14.00-15.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.41 MBytes
[ 5] 15.00-16.00 sec 8.75 MBytes 73.4 Mbits/sec 0 4.42 MBytes
[ 5] 16.00-17.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.49 MBytes
[ 5] 17.00-18.00 sec 7.50 MBytes 62.9 Mbits/sec 0 4.51 MBytes
[ 5] 18.00-19.00 sec 8.75 MBytes 73.4 Mbits/sec 0 4.50 MBytes
[ 5] 19.00-20.00 sec 6.25 MBytes 52.4 Mbits/sec 0 4.41 MBytes
[ 5] 20.00-20.28 sec 0.00 Bytes 0.00 bits/sec 0 4.40 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-20.28 sec 160 MBytes 66.0 Mbits/sec 0 sender
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------