Name 3-5 tools from the basic Linux distribution for diagnosing server performance issues.

To diagnose server performance issues in Linux, you can use the following tools from the standard package:

1. top — shows current CPU load, memory usage, and active processes.
2. vmstat — displays statistics on memory, processes, input/output, and CPU.
3. iostat — analyzes disk device load and performance.
4. sar — collects and displays historical performance data.
5. free — shows usage of RAM and swap.

These tools help quickly identify bottlenecks and understand which resources are overloaded.