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

EX442 real exams

Exam Code: EX442

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

Updated: Jul 28, 2026

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RedHat EX442 Exam Syllabus Topics:

SectionObjectives
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
          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. Interpreting system load averages
                • 2. Using historical metrics to identify degradation
                  Memory Management- Virtual memory tuning
                  • 1. Kernel memory parameters tuning
                    • 2. Swap usage optimization
                      - Memory leak detection
                      • 1. OOM killer behavior analysis
                        • 2. Process memory profiling
                          System Profiling and Kernel Tuning- Kernel parameter tuning
                          • 1. cgroups resource management
                            • 2. sysctl configuration
                              - Performance profiling tools
                              • 1. Tracing system calls
                                • 2. perf and sar usage
                                  CPU and Process Tuning- Process scheduling and prioritization
                                  • 1. nice and renice usage
                                    • 2. CPU affinity and taskset configuration
                                      - CPU performance optimization
                                      • 1. Load balancing across cores
                                        • 2. Identifying CPU-bound processes
                                          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

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