1, CPU usage
use top, w or vmstat
2, memory usage
top or free
3, disk I/0
vmstat 1 5
4, number of tcp connections
netstat -an | wc -l
1, CPU usage
use top, w or vmstat
2, memory usage
top or free
3, disk I/0
vmstat 1 5
4, number of tcp connections
netstat -an | wc -l