???????????????????????????????б????????2-5-10 ??????????????????????????2????????????????о??????????????????2-5???????????????о???????????????????????? 5-10????????????????о?????????????????????????????????????????10????????????????????о??????????????????????????????????????Web??????????????????

?????????????2-5-10???????????????????????????Щ??????????????????????????????????2-5-10 ??????

1.???????????

1??UNIX????????????????????????Paging rate??????????????????????????????????檔???????????????????????????????????????????????

2??Windows???????У????ProcessPrivate Bytes????????ProcessWorking Set???????????????????????????MemoryAvailable bytes??????????????????????????????й???

?????????????????????????: ????????(high pageout rate)????????????????????????д????????????;?????????CPU?????????治??????(out of memory errors);

2.????????????

1??UNIX???????Windows???????????????CPU??????CPU utilization??????????????????95%???????????CPU???????????????????????????????????????

??????????????SQL Server?????????????????80-85% ?????????Χ??60%??70%??

2??Windows???????У????SystemProcessor Queue Length????2?????????????????Processor Time?????????????????????????? CPU??????????????????????: ????????????(slow response time)??CPU??????????(zero percent idle CPU)?????????????CPU???(high percent user CPU)????????????CPU???(high percent system CPU)?????????к???????н??????(large run queue size sustained over time) ;

3.???д???I/O??

1??UNIX???????Windows????????????????????????Disk rate????????ò??????????????I/O??????????????????????????

2??Windows???????У???? Disk Time??Avg.Disk Queue Length?????????Page Reads/sec????????????????????????????????

???????С??????????????2-5-10???????????????????????????ο???????????????????м?????????