Pcicrawler: A Python-based command-line interface tool to debug PCI issues at scale

This post introduces Pcicrawler, a Python-based command-line tool designed to diagnose and debug Peripheral Component Interconnect (PCI) and PCI Express (PCIe) issues at scale. It provides detailed hardware information, visualizes PCI topology, and offers machine-parsable output for automation, contributing to the monitoring, diagnosis, and resolution of hardware-related performance and reliability issues within Meta's data centers.