几个系统调优监控的工具

uptime     Average system load
dmesg      Hardware/system information
top        Processor activity
iostat     Average CPU load, disk activity
vmstat     System activity
sar        Collect and report system activity
KDE        System Guard Real time systems reporting and graphing
free       Memory usage
traffic-vis Network monitoring
pmap       Process memory usage
strace     Programs
ulimit     System limits
mpstat     Multiprocessor usage