[Linux]cmd to use

0x01 Linux Perfermance Analysis in 60s

  1> uptime ---load averages

  2> dmesg -r | tail ---kernel errors

  3> vmstat 1---overall stats by time

  4> mpstat -P ALL 1 ---CPU balance

  5> pidstat 1 ---process usage

  6> iostat -xz 1 ---disk I/O

  7> free -m ---memory usage

  8> sar -n DEV 1 ---network I/O

  9> sar -n TCP,ETCP 1 ---TCP stat

  10> top ---check overview

 

0x02 Linux Disck Checklist

  1> iostat -xnz 1 ---any disk I/O? if not, stop looking

  2> vmstat 1 ---is this swapping?or, high sys time?

  3> df -h ---are the file system nearly full?

 

0x03 Linux  Network Checklist

  1> netstat -s ---play 252 metric pickup

  2> netstat -rnv ---any inefficient routes?

 

0x04

find /home/xxx/ -mtime -1 -ls  // 24h modified files in /home/xxx/