Exam Name: Red Hat Certified Specialist in Linux Performance Tuning exam
Certification Provider: RedHat
Corresponding Certification: Red Hat Certified Architect (RHCA)
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Updated: Sep 24, 2026
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RedHat EX442 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Kernel and Runtime Tuning | - Adjust kernel module parameters - Modify kernel parameters via /proc/sys, sysctl, /sys - Manage process priorities and scheduling |
| Topic 2: 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 3: Network Performance Tuning | - Adjust network stack parameters - Optimize interface settings and traffic flow |
| Topic 4: Memory Optimization | - Configure large pages and alternative page sizes - Optimize swap usage and memory allocation - Tune caching and virtual memory settings |
| Topic 5: Storage and I/O Tuning | - Select and configure I/O schedulers - Tune block device and filesystem performance - Optimize disk layout, swap placement, and filesystem settings |
| Topic 6: System Performance Analysis Tools | - Diagnose with eBPF tools, SystemTap, strace, Valgrind - Analyze system behavior with Performance Co-Pilot (PCP) - Use standard monitoring utilities (vmstat, iostat, mpstat, sar, top, powertop) - Profile hardware configuration via dmesg, dmidecode, sosreport |
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