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README.md

FreeBSD PMC Validation Suite

Kernel-level validation framework for hwpmc on modern x86 (AMD Zen focused). Enhance with DTrace for more tracing.

Requirements

  • FreeBSD with hwpmc enabled

  • pmcstat

  • Python + pytest

    sudo pkg install python3 py311-pip py311-pytest

Enable hwpmc

Add to /boot/loader.conf:

hwpmc_load="YES"

Running

Collect example:

pmcstat -s instructions -O reports/cpu.txt -l 20

Test:

pytest tests/

Validations

  • Counting accuracy
  • Workload correlation
  • Process attach
  • System-wide monitoring
  • Sampling mode

Target

Designed for:

  • FreeBSD kernel PMU validation
  • AMD platform bring-up
  • Performance tooling verification