02 |
net.ipv4.conf.default.rp_filter = 1 |
03 |
net.ipv4.conf.default.accept_source_route = 0 |
05 |
kernel.core_uses_pid = 1 |
06 |
net.ipv4.tcp_syncookies = 1 |
09 |
kernel.shmmax = 68719476736 |
10 |
kernel.shmall = 4294967296 |
11 |
net.ipv4.tcp_max_tw_buckets = 6000 |
13 |
net.ipv4.tcp_window_scaling = 1 |
14 |
net.ipv4.tcp_rmem = 4096 87380 4194304 |
15 |
net.ipv4.tcp_wmem = 4096 16384 4194304 |
16 |
net.core.wmem_default = 8388608 |
17 |
net.core.rmem_default = 8388608 |
18 |
net.core.rmem_max = 16777216 |
19 |
net.core.wmem_max = 16777216 |
20 |
net.core.netdev_max_backlog = 262144 |
21 |
net.core.somaxconn = 262144 |
22 |
net.ipv4.tcp_max_orphans = 3276800 |
23 |
net.ipv4.tcp_max_syn_backlog = 262144 |
24 |
net.ipv4.tcp_timestamps = 0 |
25 |
net.ipv4.tcp_synack_retries = 1 |
26 |
net.ipv4.tcp_syn_retries = 1 |
27 |
net.ipv4.tcp_tw_recycle = 1 |
28 |
net.ipv4.tcp_tw_reuse = 1 |
29 |
net.ipv4.tcp_mem = 94500000 915000000 927000000 |
30 |
net.ipv4.tcp_fin_timeout = 1 |
31 |
net.ipv4.tcp_keepalive_time = 30 |
32 |
net.ipv4.ip_local_port_range = 1024 65000 |
netstat -an | awk '/^tcp/ {++s[$NF]} END {for(a in s) print a, s[a]}'