Linux VPS Kernel Performance Tuning Guide#
When deploying high-concurrency web applications, configuring the default Linux network stack can unlock substantial throughput improvements.
1. Enable TCP BBR Congestion Control#
BASH
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
sysctl -p2. Increase File Descriptors & Sockets#
BASH
fs.file-max = 2097152
net.ipv4.ip_local_port_range = 1024 65535Verified on GlobalVPS telemetry nodes across Frankfurt and Dallas.
