A systems administrator receives a report about performance issues in a Linux production system. Which of the following commands should the administrator use to help diagnose the performance issues?
The top command provides a real-time, dynamic view of system performance, showing CPU, memory usage, and running processes — essential for identifying performance bottlenecks.
jobs shows background jobs in a shell session.
renice is used to change process priority but doesn’t diagnose issues.
pkill terminates processes but doesn’t monitor performance.
[Reference:CompTIA Linux+ XK0-005 Study Guide, Domain 5.1 – Troubleshooting Tools, “top is a critical tool for real-time system performance diagnostics and process monitoring.”, , ]
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