List of useful command to performance analysis:
uptime
- system uptime and load averagesdmesg | tail
- kernel errorsvmstat 1
- overall stats by timempstat -P ALL 1
- CPU balancepidstat 1
- process usageiostat -xz 1
- disk I/Ofree -m
- memory usagesar -n DEV 1
- network I/Osar -n TCP,ETCP 1
- TCP statshtop
- check overview