TCP Network parameter optimization

1.

echo "65535" >/proc/sys/net/ipv4/ip_local_port_range set up an out-of-band available port range indicates that the port can be used 65535-1024 (0~1024 is protected)

echo 1 >/proc/sys/net/ipv4/tcp_tw_reuse set time_wait connection reuse default 0

echo 1 >/proc/sys/net/ipv4/tcp_tw_recycle Set Quick recycle time_wait connection default 0

echo 180000 >/proc/sys/net/ipv4/tcp_max_tw_buckets Set maximum time_wait connection length default 262144

echo 1 >/proc/sys/net/ipv4/tcp_timestamps Set whether to enable a more accurate method than time-out to enable calculation of RTT by default 0

echo 1 >/proc/sys/net/ipv4/tcp_window_scaling Sets whether the sliding window size of a TCP/IP session is variable by default 1

echo 20000 >/proc/sys/net/ipv4/tcp_max_syn_backlog Set the maximum number of connections that are waiting for the client to not answer default 2048

echo >/proc/sys/net/ipv4/tcp_fin_timeout set fin-wait Status Wait collection time default 60

echo "4096 87380 16777216" >/proc/sys/net/ipv4/tcp_rmem set maximum TCP data send buffer size, respectively minimum, default, and maximum default 4096 87380 4194304

echo "4096 65536 16777216" >/proc/sys/net/ipv4/tcp_wmem set maximum TCP data accept buffer size, minimum, default, and maximum default 4096 87380 4194304

　　

echo 10000 >/proc/sys/net/core/somaxconn Sets the length of the listening queue for each port in the listening state by default 128

echo 10000 >/proc/sys/net/core/netdev_max_backlog Set the maximum number of packets waiting for CPU to be processed by default 1000

echo 16777216 >/proc/sys/net/core/rmem_max Set Maximum system socket data Accept buffer size default 124928

echo 262144 >/proc/sys/net/core/rmem_default Set default system socket data Accept buffer size default 124928

echo 16777216 >/proc/sys/net/core/wmem_max Set maximum system socket data send buffer size default 124928

echo 262144 >/proc/sys/net/core/wmem_default Set default system socket data send buffer size default 124928

　　

echo 2000000 >/proc/sys/fs/file-max Set the maximum number of open files by default 385583

　　

Optimized network with AB command to test machine

After setting up remember to save

　　

TCP Network parameter optimization