🌐 Network Stack Tuner

Updated: 2026-06-09 23:00:02

📊 Total params: 22 🟢 Tuned: 6 🟡 Default: 16
🟢 = Tuned (in recommended range) 🟡 = Default (stock kernel value) ⚪ = Unknown (parameter not available)

Parameters

Description Parameter Current Default Recommended Status
🟢 Listen backlog queue net.core.somaxconn 4096 128 1024-4096 Tuned
🟢 Max socket receive buffer net.core.rmem_max 16777216 212992 1048576-16777216 Tuned
🟢 Max socket send buffer net.core.wmem_max 16777216 212992 1048576-16777216 Tuned
🟡 Default socket receive buffer net.core.rmem_default 212992 212992 1048576 Default
🟡 Default socket send buffer net.core.wmem_default 212992 212992 1048576 Default
🟡 Incoming packet backlog net.core.netdev_max_backlog 4096 1000 5000-10000 Default
🟢 Max socket option memory net.core.optmem_max 131072 20480 20480+ Tuned
🟢 SYN queue length net.ipv4.tcp_max_syn_backlog 4096 256 1024-4096 Tuned
🟡 TIME_WAIT timeout (seconds) net.ipv4.tcp_fin_timeout 60 60 15-30 Default
🟡 Reuse TIME_WAIT sockets (safe for outbound) net.ipv4.tcp_tw_reuse 2 0 1 Default
🟡 Keepalive interval (seconds) net.ipv4.tcp_keepalive_time 7200 7200 600-1800 Default
🟡 Keepalive probe interval net.ipv4.tcp_keepalive_intvl 75 75 10-15 Default
🟡 Max keepalive probes net.ipv4.tcp_keepalive_probes 9 9 5 Default
🟡 Max TIME_WAIT sockets net.ipv4.tcp_max_tw_buckets 262144 409600 80000-200000 Default
🟡 TCP receive buffer (min/default/max) net.ipv4.tcp_rmem 4096 131072 33554432 4096 131072 6291456 4096 87380 16777216 Default
🟡 TCP send buffer (min/default/max) net.ipv4.tcp_wmem 4096 16384 4194304 4096 16384 4194304 4096 16384 16777216 Default
🟡 Ephemeral port range net.ipv4.ip_local_port_range 32768 60999 32768 60999 1024 65535 Default
🟡 TCP congestion algorithm net.ipv4.tcp_congestion_control cubic cubic bbr (Linux 5.x+) Default
🟡 TCP Fast Open (0=off, 3=both) net.ipv4.tcp_fastopen 1 0 3 Default
🟡 Min UDP receive buffer net.ipv4.udp_rmem_min 4096 4096 4096+ Default
🟡 Min UDP send buffer net.ipv4.udp_wmem_min 4096 4096 4096+ Default
🟢 Max connection tracking entries net.netfilter.nf_conntrack_max 262144 65536 262144+ Tuned

Source: /proc/sys/net/* | Tune with: sysctl -w param=value | Persist in: /etc/sysctl.d/