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

EX442

Exam Code: EX442

Exam Name: Red Hat Certified Specialist in Linux Performance Tuning exam

Updated: Jul 29, 2026

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RedHat EX442 Exam Syllabus Topics:

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

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