RedHat Red Hat Certified Specialist in Linux Performance Tuning : EX442 Exam

  • Exam Code: EX442
  • Exam Name: Red Hat Certified Specialist in Linux Performance Tuning exam
  • Updated: Jul 21, 2026
  • Q & A: 0 Questions and Answers

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RedHat EX442 Exam Syllabus Topics:

SectionObjectives
Topic 1: Disk I/O Performance- Filesystem tuning
  • 1. Disk scheduler configuration
    • 2. Mount options optimization
      - Storage performance analysis
      • 1. iostat and iotop usage
        • 2. Identifying I/O bottlenecks
          Topic 2: Memory Management- Memory leak detection
          • 1. Process memory profiling
            • 2. OOM killer behavior analysis
              - Virtual memory tuning
              • 1. Kernel memory parameters tuning
                • 2. Swap usage optimization
                  Topic 3: Network Performance Tuning- Network throughput optimization
                  • 1. TCP tuning parameters
                    • 2. Bandwidth and latency analysis
                      - Network troubleshooting tools
                      • 1. ss, netstat, and ip tools usage
                        • 2. Packet analysis basics
                          Topic 4: System Profiling and Kernel Tuning- Performance profiling tools
                          • 1. Tracing system calls
                            • 2. perf and sar usage
                              - Kernel parameter tuning
                              • 1. cgroups resource management
                                • 2. sysctl configuration
                                  Topic 5: System Performance Analysis- Performance baseline establishment
                                  • 1. Using historical metrics to identify degradation
                                    • 2. Interpreting system load averages
                                      - System resource monitoring and bottleneck identification
                                      • 1. CPU utilization analysis using standard Linux tools
                                        • 2. Memory usage and swap behavior analysis
                                          Topic 6: CPU and Process Tuning- CPU performance optimization
                                          • 1. Identifying CPU-bound processes
                                            • 2. Load balancing across cores
                                              - Process scheduling and prioritization
                                              • 1. nice and renice usage
                                                • 2. CPU affinity and taskset configuration

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