RedHat Red Hat Certified Specialist in Linux Performance Tuning : EX442

  • Exam Code: EX442
  • Exam Name: Red Hat Certified Specialist in Linux Performance Tuning exam
  • Updated: Jul 15, 2026
  • Q & A: 0 Questions and Answers

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RedHat EX442 Exam Syllabus Topics:
SectionObjectives
Tune Memory Utilization- Optimize memory performance
  • 1. Adjust memory-related settings
- Analyze memory usage
  • 1. Identify memory bottlenecks
Tune Running Systems- Control resource usage
  • 1. Manage control groups (cgroups)
- Manage process scheduling
  • 1. Modify process priorities
- Apply tuning profiles
  • 1. Configure and manage tuned profiles
Tune Network Performance- Analyze network behavior
  • 1. Measure network throughput and latency
- Optimize network settings
  • 1. Tune network stack and configuration parameters
Use Utilities to Analyze System Behavior- Use Performance Co-Pilot
  • 1. Analyze system behavior with PCP
- Analyze and report system and application behavior
  • 1. Collect and interpret performance metrics
  • 2. Use vmstat, iostat, mpstat, sar, top, powertop, gnome-system-monitor and similar tools
- Profile hardware configurations
  • 1. Use dmesg
  • 2. Use dmidecode
  • 3. Use sosreport
Analyze System and Application Performance- Analyze processes and applications
  • 1. Use Valgrind
  • 2. Use ps and top
- Evaluate application performance
  • 1. Compare application implementations based on performance characteristics
- Trace and diagnose behavior
  • 1. Configure and use SystemTap
  • 2. Use eBPF tools
Monitor and Alter Kernel Behavior- Configure kernel modules
  • 1. Modify kernel module parameters
- Manage kernel runtime parameters
  • 1. Use /proc/sys
  • 2. Use /sys
  • 3. Use sysctl
Configure Disk and File Subsystems- Analyze storage performance
  • 1. Evaluate disk I/O behavior
- Tune storage subsystems
  • 1. Optimize file system and storage performance

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