Watch disk I/O linux

Show process tree pstree -p TCP/IP tuning — backlog sysctl -w net.core.somaxconn=65535 Show CPU info lscpu Find large files find / -type f -size +100M -exec ls -lh {} \; 2>/dev/null | sort -k5 -rh | head -20 Disk usage per directory du -sh /* 2>/dev/null | sort -rh | head -15