Show NUMA topology linux
NUMA nodes, CPU assignment, and memory distribution
numactl --hardware
more linux
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TCP tuning: increase backlog
sysctl -w net.core.somaxconn=65535 net.ipv4.tcp_max_syn_backlog=65535
TCP tuning: enable BBR
sysctl -w net.core.default_qdisc=fq net.ipv4.tcp_congestion_control=bbr
Show open UDP sockets
ss -ulnp
Bind process to CPU cores
taskset -cp 0,1 <pid>
Show hardware interrupts
watch -n1 'cat /proc/interrupts | head -30'