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RedHat EX442 Exam Syllabus Topics:

SectionObjectives
Topic 1: Memory Optimization- Tune caching and virtual memory settings
- Optimize swap usage and memory allocation
- Configure large pages and alternative page sizes
Topic 2: Kernel and Runtime Tuning- Adjust kernel module parameters
- Modify kernel parameters via /proc/sys, sysctl, /sys
- Manage process priorities and scheduling
Topic 3: CPU and Process Management- Use control groups (cgroups) and systemd resource limits
- Apply tuned profiles for workload types
- Configure CPU affinity and scheduling policies
Topic 4: Network Performance Tuning- Adjust network stack parameters
- Optimize interface settings and traffic flow
Topic 5: Storage and I/O Tuning- Select and configure I/O schedulers
- Optimize disk layout, swap placement, and filesystem settings
- Tune block device and filesystem performance
Topic 6: System Performance Analysis Tools- Diagnose with eBPF tools, SystemTap, strace, Valgrind
- Profile hardware configuration via dmesg, dmidecode, sosreport
- Analyze system behavior with Performance Co-Pilot (PCP)
- Use standard monitoring utilities (vmstat, iostat, mpstat, sar, top, powertop)
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