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

????????????????С?????????????????????????????????????????????????????????

?????????С???????????????????????????????￡?

????????????????????????????????????????????ɡ????????￡????????????????????????????????

???????????????????????23.47??????B

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

???????????裺

????0-10??????????????????1?????С?

??????????CPU???????20%????????10???????????1??????2?????CPU??????2??0??????3???0

?????????10-15??????????????????????У?1??2??????????CPU????????36%??

???????????????????CPU?????????1.8?????????????????????0.9?????

?????????????1????????CPU 2.9??????????0.6?????????????????????????У????????CPU??????1.8?????

???????????CPU????????48.8%????????????1.8/0.488=3.69??????????????1???3.5?????CPu????????????????

????????????2??3??????????С?

????2?????????0.5?????????0.5×2/0.36=2.78?????2??????2????CPU?????????????

????3?????????0.4?????CPU???????0.4/0.2 = 2

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

??????????????CPU???????????

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

??????????????????CPU??????????20%??

????????????????CPu?????????20% + (1-20%)*20% = 36%

???????????????36% + (1-36%)*20% = 48.8%

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