Linux · Memory & Performance

How to check CPU information in Linux

Check the CPU model, socket, core, and thread counts, and NUMA layout with lscpu and /proc/cpuinfo.

See what CPUs the machine has: model, sockets, cores per socket, threads, and NUMA nodes. lscpu is the summary; /proc/cpuinfo is the per-logical-CPU detail.

# Summary: sockets, cores, threads, NUMA
lscpu

# Logical CPU count
nproc

# Per-CPU detail
cat /proc/cpuinfo

# NUMA memory layout (needs numactl)
numactl --hardware

LinuxlscpuCPU