???????????

?????????????????????????????????????????????CPU???????????????????????aggregate functions??????sum??min??max??count??????????????????????????????????????????????ü???????????????????????????????

??????????

???????Pages/sec????????????????????????????????Pages/sec???????????????????????????????????????????????????Page Faults/sec????????????Ч??????????Ч????????????????????????????????????????Pages Read/sec?????????ü??????????5??????????????5??????ж??????淽???????

??????????

??????Physical Disk?????????????????Page Reads/sec??%Disk Time??Aerage Disk Queue Length??????????Pages Read/sec??????%Disk Time??Average Disk Queue Length?????????????д???????????????????г??????????Pages Read/sec??δ???????????治??

???????????

??????SystemProcessor Queue Length ??????????????ü????????????CPU????????????1????????????????????????????????%Process Time??????????洦?????????????????????????????Processor\%Process Time ???????????????????????????????????????????%DOC Time ?????????????????????ü??????????á???????????У????????????50????????Processor\%Precessor Time??????????????????????????????

????????????

????????????????I/O??????????I/O??????????????I/O????????  ????????????????????????I/O??????????????I/O???????????????????????????????????Physical Disk ???????У???У?Disk Time ?????????????????У????????????????????????????????????????80??????????????й???Disk sec/TransferС??15ms?Excellent??????15??30ms?????????30??60ms????????????????60ms??????????????????????RAID??????

????3??????

?????????????????????????AIX?????????????????????????????????????????飬???????λ????????????????????????????????????????????й????????????????