What methods can be used to identify issues with RAM in a Linux system?

To diagnose memory issues in Linux, several methods and tools can be used:

• The free command — shows total, used, and free memory.

  free -h
  

• The top or htop commands — display processes with memory consumption in real-time.

• Viewing kernel logs with dmesg — memory-related errors may be recorded there.

• Using vmstat — shows virtual memory and swap statistics.

• Checking swap usage — active swap usage may indicate RAM shortage.

• The memtester tool — allows testing memory for errors.

• /proc/meminfo — a file with detailed information about memory status.

If hardware errors are suspected, memtest86+ can be used — a bootable memory testing tool outside the OS.

Thus, diagnostics include monitoring memory usage, analyzing logs, and specialized testing.