Overview

📋 Step 1: Edit sysctl.conf using vi

sudo vi /etc/sysctl.conf

📄 Optimized Configuration

# =============================================================================
# /etc/sysctl.conf — Optimized for 1000+ Proxies
# =============================================================================
# Kernel
kernel.panic = 10
# Virtual Memory
vm.vfs_cache_pressure = 50
vm.nr_hugepages = 128
vm.swappiness = 10
vm.dirty_writeback_centisecs = 500
vm.dirty_expire_centisecs = 1000
vm.compaction_proactiveness = 0
# Network Core
net.core.rmem_max = 134217728
net.core.wmem_max = 134217728
net.core.rmem_default = 524288
net.core.wmem_default = 524288
net.core.netdev_max_backlog = 5000
net.core.netdev_budget = 300
net.core.netdev_budget_usecs = 2000
net.core.somaxconn = 65535
net.core.optmem_max = 16777216
# TCP Tuning
net.ipv4.tcp_rmem = 4096 262144 134217728
net.ipv4.tcp_wmem = 4096 262144 134217728
net.ipv4.tcp_congestion_control = bbr
net.ipv4.tcp_mem = 786432 1048576 26777216
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_fastopen = 3
net.ipv4.tcp_mtu_probing = 1
net.ipv4.tcp_low_latency = 1
net.ipv4.tcp_fin_timeout = 15
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_keepalive_intvl = 30
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_max_syn_backlog = 65536
net.ipv4.tcp_syn_retries = 3
net.ipv4.tcp_synack_retries = 3
net.ipv4.tcp_max_tw_buckets = 2000000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.ip_local_port_range = 1024 65535
# Disable IPv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
# Filesystem
fs.file-max = 2097152
fs.inotify.max_user_watches = 1048576
fs.inotify.max_user_instances = 8192
fs.inotify.max_queued_events = 1048576

✅ Step 2: Apply Changes

sudo sysctl -p

🔄 Step 3: Reboot the System (Optional)

sudo reboot

✅ Verification Commands

# Check key values
sudo sysctl -a | grep -E 'file-max|somaxconn|tcp_max_syn_backlog|tcp_congestion_control'
# Monitor file descriptors
cat /proc/sys/fs/file-nr