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

EX442 pass collection

Exam Code: EX442

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

Updated: Jul 17, 2026

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RedHat EX442 Exam Syllabus Topics:

SectionObjectives
Memory Management- Memory leak detection
  • 1. OOM killer behavior analysis
    • 2. Process memory profiling
      - Virtual memory tuning
      • 1. Kernel memory parameters tuning
        • 2. Swap usage optimization
          CPU and Process Tuning- Process scheduling and prioritization
          • 1. CPU affinity and taskset configuration
            • 2. nice and renice usage
              - CPU performance optimization
              • 1. Identifying CPU-bound processes
                • 2. Load balancing across cores
                  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
                          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
                                  System Profiling and Kernel Tuning- Kernel parameter tuning
                                  • 1. cgroups resource management
                                    • 2. sysctl configuration
                                      - Performance profiling tools
                                      • 1. perf and sar usage
                                        • 2. Tracing system calls
                                          Network Performance Tuning- Network troubleshooting tools
                                          • 1. Packet analysis basics
                                            • 2. ss, netstat, and ip tools usage
                                              - Network throughput optimization
                                              • 1. TCP tuning parameters
                                                • 2. Bandwidth and latency analysis

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