[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/
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