分享一下我用的sysctl.conf

Meocat

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 = 131072，naive 作者推荐 131072，cloudflare 2022年也推荐了131072
https://blog.cloudflare.com/optimizing-tcp-for-high-throughput-and-low-latency

1. net.core.default_qdisc = fq
   
2. net.ipv4.tcp_congestion_control = bbr
   
3. net.core.rmem_default = 1310720
   
4. net.core.rmem_max = 8388608
   
5. net.core.wmem_default = 327680
   
6. net.core.wmem_max = 8388608
   
7. net.core.optmem_max = 20480
   
8. net.core.netdev_max_backlog = 10000
   
9. net.ipv4.tcp_rmem = 2097152 4194304 8388608
   
10. net.ipv4.tcp_wmem = 262144 524288 8388608
    
11. net.ipv4.tcp_mem = 44259 59012 88518
    
12. net.ipv4.udp_mem = 88518 118025 177036
    
13. net.ipv4.tcp_slow_start_after_idle = 0
    
14. net.ipv4.tcp_notsent_lowat = 131072

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以上我 sysctl.conf 参数改动的来源都附链接说明了，使用这套参数会增加网络性能，同时也会增加高并发下的内存和 cpu 占用

234

很好，有理有据，收藏了

scheme

先收藏再说

爾乃美家累

谢谢分享，研究一下

zhoutiancai

默认就很强了，不要那么复杂

lonefly

1. # 1GB 内存
   
2. #kernel.shmmax=536870912
   
3. # 4GB 内存
   
4. #kernel.shmmax=2147483648
   
5. # 8GB 内存
   
6. # kernel.shmmax=4294967296
   
7. # 16GB 内存
   
8. # kernel.shmmax=8589934592

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