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EX442 pdf
  • Exam Code: EX442
  • Exam Name: Red Hat Certified Specialist in Linux Performance Tuning exam
  • Updated: Aug 15, 2026
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  • Exam Code: EX442
  • Exam Name: Red Hat Certified Specialist in Linux Performance Tuning exam
  • Updated: Aug 15, 2026
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RedHat EX442 Exam Syllabus Topics:

SectionObjectives
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
          Disk I/O Performance- Filesystem tuning
          • 1. Mount options optimization
            • 2. Disk scheduler configuration
              - 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
                          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
                                  System Profiling and Kernel Tuning- Performance profiling tools
                                  • 1. Tracing system calls
                                    • 2. perf and sar usage
                                      - Kernel parameter tuning
                                      • 1. sysctl configuration
                                        • 2. cgroups resource management
                                          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

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