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

  • Exam Code: EX442
  • Exam Name: Red Hat Certified Specialist in Linux Performance Tuning exam
  • Updated: Aug 13, 2026
  • Q & A: 0 Questions and Answers

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RedHat EX442 Exam Syllabus Topics:

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

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