NK admin's System Optimization page tunes kernel params for high-QPS / high-concurrency. All paid plans.
Tunables
- Network: nf_conntrack_max / tcp_max_syn_backlog / somaxconn / tcp_tw_reuse
- File / fd: fs.file-max / nofile ulimit / inotify watches
- Memory: vm.swappiness / overcommit_memory / dirty_ratio
- Process: kernel.pid_max / threads-max
One-click templates
Presets: High-QPS Web / High-IO DB / Many docker-VMs / Conservative default. Click → auto-write /etc/sysctl.d/99-nodekeeper.conf + sysctl -p applies live.