guide-aspm.md

Pepc User Guide: ASPM

• Author: Artem Bityutskiy dedekind1@gmail.com

Table of Contents

• Introduction
• Examples
  • Get ASPM Policy

Introduction

The pepc aspm command groups operations related to PCI Express Active State Power Management (ASPM). ASPM is a power-saving feature that allows PCI Express links to enter low-power states when idle.

ASPM is implemented in hardware and firmware, but Linux can enable or disable it globally or per PCIe device.

Examples

Get ASPM Policy

$ pepc aspm info
ASPM policy: default
Available policies: default, performance, powersave, powersupersave