Linux systemd analyze Guide - ryzendew/Linux-Tips-and-Tricks GitHub Wiki

Linux systemd-analyze Guide

Complete beginner-friendly guide to systemd-analyze on Linux, covering Arch Linux, CachyOS, and other distributions including boot time analysis, system performance, and boot optimization.

Table of Contents

  1. Understanding systemd-analyze
  2. systemd-analyze Basics
  3. Boot Time Analysis
  4. System Analysis
  5. Troubleshooting

Understanding systemd-analyze

What is systemd-analyze?

systemd-analyze analyzes systemd performance.

Uses:

  • Boot time: Analyze boot time
  • Service timing: See service start times
  • Performance: Analyze system performance
  • Optimization: Optimize boot time

Why it matters:

  • Boot optimization: Optimize boot speed
  • Performance analysis: Analyze performance
  • Troubleshooting: Debug slow boot

systemd-analyze Basics

Boot Time

Basic usage:

# Show boot time
systemd-analyze

# Shows total boot time

Detailed Timing

Service timing:

# Service start times
systemd-analyze blame

# Shows services by start time

⏱ Boot Time Analysis

Critical Chain

Slow services:

# Critical path
systemd-analyze critical-chain

# Shows critical boot path

Service Times

Detailed times:

# Detailed service times
systemd-analyze time

# Shows boot time breakdown

System Analysis

Plot Boot

Visualize boot:

# Generate boot plot
systemd-analyze plot > boot.svg

# Creates SVG visualization

Verify Configuration

Check config:

# Verify unit files
systemd-analyze verify unit.service

# Checks unit file syntax

Troubleshooting

systemd-analyze Not Found

Check systemd:

# systemd-analyze is part of systemd
# Usually pre-installed on systemd systems

# Check systemd
systemctl --version

Summary

This guide covered systemd-analyze usage, boot time analysis, and performance optimization for Arch Linux, CachyOS, and other distributions.

Next Steps

This guide covers Arch Linux, CachyOS, and other Linux distributions. For distribution-specific details, refer to your distribution's documentation.