How to determine which process uses the most system resources on a server?

To determine the process that uses the most system resources on a server, you can use several tools:

• top — an interactive utility that shows processes sorted by CPU or memory usage. Run top and pay attention to the %CPU and %MEM columns.

• htop — an improved version of top with a user-friendly interface and the ability to sort by various parameters.

• ps — a command to display a list of processes. For example:

ps aux --sort=-%cpu | head -n 5  # Top 5 processes by CPU load
ps aux --sort=-%mem | head -n 5  # Top 5 processes by memory usage

• pidstat or vmstat — for more detailed monitoring.

Thus, for quick analysis, top or htop are usually sufficient.