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RedHat EX442 Exam Syllabus Topics:

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

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