网络参数是从 google pixel 9 开源的代码抄的，google 给它的安卓手机用的网络参数，我认为比较适合现代的网络环境
https://cs.android.com/android/platform/superproject/main/+/main:device/google/zumapro/conf/init.zumapro.board.rc;l=100
net.ipv4.tcp_slow_start_after_idle=0 是针对代理设置的，代理不需要慢启动
https://github.com/klzgrad/naiveproxy/wiki/Performance-Tuning#turn-off-tcp_slow_start_after_idle
net.ipv4.tcp_notsent_lowat = 16384，naive 作者推荐 131072，但我测试 http/2 速度没什么区别，我选择保守些的 16384，是 cloudflare 推荐的
https://blog.cloudflare.com/http-2-prioritization-with-nginx
net.ipv4.tcp_ecn=1 则是我用了 bbr v3，支持 ecn 就试了下，对网速没什么影响而且从原理上能降低网络拥塞，外国的网站服务器也普遍开了 ecn，
用 bbr v3
的可以打开试试，需要本地设备也打开 ecn
用bbr v1
的不需要打开 ecn
https://github.com/google/bbr/tree/v3?tab=readme-ov-file#enabling-ecn-support
[ol]net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr
net.core.rmem_default = 1310720
net.core.rmem_max = 8388608
net.core.wmem_default = 327680
net.core.wmem_max = 8388608
net.core.optmem_max = 20480
net.core.netdev_max_backlog = 10000
net.ipv4.tcp_rmem = 2097152 4194304 8388608
net.ipv4.tcp_wmem = 262144 524288 8388608
net.ipv4.tcp_mem = 44259 59012 88518
net.ipv4.udp_mem = 88518 118025 177036
net.ipv4.tcp_slow_start_after_idle = 0
net.ipv4.tcp_notsent_lowat = 16384
net.ipv4.tcp_ecn=1[/ol]复制代码
以上我 sysctl.conf 参数改动的来源都附链接说明了
