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

EX442
  • Exam Code: EX442
  • Exam Name: Red Hat Certified Specialist in Linux Performance Tuning exam
  • Updated: Aug 17, 2026
  • Q & A: 0 Questions and Answers

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RedHat EX442 Exam Syllabus Topics:

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

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