Linux Performance Analysis

Linux 性能分析

Brendan D. Gregg

http://www.brendangregg.com/

1. uptime
2. dmesg | tail
3. vmstat 1
4. mpstat -P ALL 1
5. pidstat 1
6. iostat -xz 1
7. free -h
8. sar -n DEV 1
9. sar -n TCP,ETCP 1
10. top (htop,atop)

Utilization 使用率 Saturation 饱和度 Errors 错误

uptime

# uptime 
13:33:46 up 31 days,  4:22,  8 users,  load average: 74.46, 81.67, 77.75