The /proc/cpuinfo file is a virtual, read-only file in Linux that displays detailed, real-time data for every logical processor core. It provides essential information on CPU model, vendor, clock speed, cache, and core identification, often used to determine the total number of logical and physical processors. For a complete guide to understanding /proc/cpuinfo, visit the Red Hat documentation at docs.redhat.com. cpuinfo – Getting information about CPU – Ask Ubuntu