RedHat EX442 Exam : 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: Sep 08, 2026
  • Q & A: 0 Questions and Answers

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RedHat EX442 Exam Syllabus Topics:

SectionObjectives
Topic 1: System Profiling and Kernel Tuning- Performance profiling tools
  • 1. perf and sar usage
    • 2. Tracing system calls
      - Kernel parameter tuning
      • 1. sysctl configuration
        • 2. cgroups resource management
          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: System Performance Analysis- System resource monitoring and bottleneck identification
                  • 1. CPU utilization analysis using standard Linux tools
                    • 2. Memory usage and swap behavior analysis
                      - Performance baseline establishment
                      • 1. Using historical metrics to identify degradation
                        • 2. Interpreting system load averages
                          Topic 4: 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 5: 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
                                          Topic 6: Network Performance Tuning- Network troubleshooting tools
                                          • 1. ss, netstat, and ip tools usage
                                            • 2. Packet analysis basics
                                              - Network throughput optimization
                                              • 1. TCP tuning parameters
                                                • 2. Bandwidth and latency analysis

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