Performance Analysis

    List of useful command to performance analysis:

    • uptime - system uptime and load averages
    • dmesg | tail - kernel errors
    • vmstat 1 - overall stats by time
    • mpstat -P ALL 1 - CPU balance
    • pidstat 1 - process usage
    • iostat -xz 1 - disk I/O
    • free -m - memory usage
    • sar -n DEV 1 - network I/O
    • sar -n TCP,ETCP 1 - TCP stats
    • htop - check overview