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

??????

???????????2????Э????????????????????????з????????????????????????????????????????????????????к??????????????????????????????????????????о??????????????????Щ???????顣??????????????????????????????????LoadRunner?????

????????

??λ???????????1?????λ???

?????????????????????????????????????λ?????????????????????????????????????????

????????????????????з?????????????????????λ??????????????????????????????????λ?????????ж?????????????????????????????????????????????????????????е???????????????????????????????????????????

TPS??Transaction per Second?????????????????λ??????/??

TRT??Transaction Response Time?????????????TPS?????????????????????λ????

???????????

1. ???????

????????????????????????????????Χ???????????????????????????????????????????????????????????????????????????У????????????????????????????巽???????????????????????????????о???????????????????????????

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

?????????????????????÷??????????????????????????????TPS??????

??????????????????????????к??????????2/8???10%????????????????????????????*session???/?????????????????????????????????????????????????10????????????????????????10??*10%=1??????????ɡ?

???TPS????????????????????????????о???????????????????????????????????ж???????????10??????????????TPS???=10??/??6*3600??=4.63??/????????6С??????????????????TPS?????????????????

????????????????????????????????????????к???????????????????????????????????????????????????

2. ???????

??????????????????????????????????????????????????ó?????????????????????????????????????? ? ?????TPS?????????????????????????y?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????TPS??TRT??????????????????????????????????????????

1??TPS

Transaction?????????????TPS????????Transaction??????????????????

C/S???????????????????????????????????????????????????????????λ????????????????????????????Transaction??????????????

B/S????????????????????????????????ж?ν?????????????????????Transaction??????????????Transaction??????????????????????????

LoadRunner????????Action????????????????????LR????TPS????1????????????Transaction?????Action???ж??Transaction????????TPS????????????????????????????????????????Action???????????????????Transaction??

???TPS??????????????????????????????

????????????????ο????????????????????徹??????????????????ó?????TPS?????????????????????????????TPS?????????????????????????????????????????????????????????TPS??TRT?????????????????????

2??TRT

TRT?TPS?????????????????????????????????????????????????TPS??????????TPS??仯???仯?????????????TRT?????????????????????????????

TPS ?? TRT = ??????????????????????TPS=20????????TRT=2?????????????????=20??2=40??????1???????λ???????1??????????????40???????????????

?趨?????TPS????????TRT????????TRT??????????????????????????????Ч???TRT?????????????????????OLTP?????????????????????????????3???????ó????????????????1?????????OLAP????????????????????????3/5/8??????????

3?????????????

?????????????????LoadRunner???????VUser????????????????VUser?????TPS?仯????????????????????????????????????????????????LoadRunner???????VUser?????????????????thinktime??pacing??????????????VUser?????????????????????????????????????10??VUser??????Σ????A?????????????1????A?????TPS=10/1=10????B?????????????5????B?????TPS=10/5=2????????????????VUser??????????????????????????????????????????????????????????????????????????????????????VUser?????????????????????????????

???????????????????????????????????????????????????????????????????λ?????n??????????????????n??????????n??????????VUser??????????????????????????????????????Ρ?

4?????????????

????????????????????????TPS??TRT????й???????????????10%?????????????????????????????????????????????????????????????????????????е???????????????????????????????????????????????????????????????????????????????????????????

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

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

???????????????????????????????????TPS????????????????????????????????????????????????????????????TPS??????????????2/8??????????????????????????е??????????????????????????????????????

LoadRunner?п??????????Run-Time Settings??Pacing?At fixed intervals?? every 1 sec??????????ε??????????1??????????????????????Transaction????TRTС??1????VUser????=???????????=TPS?????????????VUser????????????????????????????а??????Transaction????TRT????TPS??????????????????TPS????????????????VUser??????????every N sec????????

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

??????????????????y????????????????????????????Pacing?As soon as the previous iteration ends?????thinktime?????????????????????????Σ??????????????VUser????????ò????????????VUser??????????????壬???????????????????????????????????????????????????TRT???????????????Web???????????????????????????

3. VUser??????

????????????????????????VUser?????壬???????л????????????????????????о??????????????????????????????????????????????VUser???????????????????????????????????????????????????????TRT?????????????????????TPS??