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RedHat EX442 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Kernel and Runtime Tuning | - Modify kernel parameters via /proc/sys, sysctl, /sys - Manage process priorities and scheduling - Adjust kernel module parameters |
| CPU and Process Management | - Configure CPU affinity and scheduling policies - Apply tuned profiles for workload types - Use control groups (cgroups) and systemd resource limits |
| Network Performance Tuning | - Adjust network stack parameters - Optimize interface settings and traffic flow |
| Storage and I/O Tuning | - Tune block device and filesystem performance - Optimize disk layout, swap placement, and filesystem settings - Select and configure I/O schedulers |
| System Performance Analysis Tools | - Analyze system behavior with Performance Co-Pilot (PCP) - Use standard monitoring utilities (vmstat, iostat, mpstat, sar, top, powertop) - Diagnose with eBPF tools, SystemTap, strace, Valgrind - Profile hardware configuration via dmesg, dmidecode, sosreport |
| Memory Optimization | - Configure large pages and alternative page sizes - Tune caching and virtual memory settings - Optimize swap usage and memory allocation |
