corefreq

CPU monitoring and tuning software designed for 64-bit processors

CoreFreq provides a framework to retrieve CPU data with a high degree of precision: * Core frequencies and ratios; SpeedStep (EIST), Turbo Boost, Hyper-Threading (HTT) and Base Clock * Performance counters including Time Stamp Counter (TSC), Unhalted Core Cycles (UCC), Unhalted Reference Cycles (URC) * Number of instructions per cycle or second, IPS, IPC, or CPI * CPU C-States C0 C1 C3 C6 C7 - C1E - Auto/UnDemotion of C1 C3 * DTS Temperature and Tjunction Max, Thermal Monitoring TM1 TM2 state, Vcore * Topology map including Caches for boostrap and application CPU * Processor features, brand and architecture strings * In progress: Uncore, Memory Controller channels and geometry, DIMM timings, * Stress tools, Power and Energy (RAPL, P-State, HWP, TDP), Overclocking, cpuidle and cpufreq driver, ClockSource, Mitigation Mechanisms To reach this goal, CoreFreq implements a Linux Kernel module which employs the followings: * asm code to keep as near as possible the readings of the performance counters; * per-CPU, implements slab data memory and high-resolution timer; * compliant with suspend / resume and CPU Hot-Plug; * a shared memory to protect kernel from the user-space part of the software; * atomic synchronization of threads to avoid mutexes and deadlock

homepage ↗ github: cyring/CoreFreq