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

????Web Page Breakdown????????????
????“?????????”???????????????????????????????????????????????????????????Щ???????????λ??ж??????????????
????????
????1??Web Page Breakdown????????????
????“?????”???????????????????????????????????????????????????????????
????“?????”???????????????????н????????
????1)??Download Time Breaddown?????????????
????“??????????”????????в???????????????????????????????????з???ò????????????DNS??????????????????????λ???????????????????
????2)??Component Breakdown(Over Time)????????(?????仯)??
????“??????”???????????????????????仯?????????????????????????????Щ??????????????????????????????????????????????????????????棬???????????????????????????????Щ??????????????????
????3)??Download Time Breakdown(Over Time)????????????(?????仯)??
????“??????????(?????仯)” ??????????????????????????????????仯?????????????????????????????????????????????е??????????
????“??????????”????????????????????????????????????????????“??????????(?????仯)”??????3??????й??????????????????????????????????????????????????????????????????
????4)??Time to First Buffer Breakdown(Over Time)??????λ?????????(?????仯)??
????“????λ?????????(?????仯)”????????????Web??????????????λ???????????????????????????е?????????????????????????????????????????λ????????????????????????????????????????????????????????
????First Buffer Time?????????????????????????????????????????????????????????????????紫??????????????????????????????????????
????2??Page Component Breakdown????????????
????“?????????”????????????????????????????????????λ??????????????????????????????????н?????????????????????????????????
????3??Page Component Breakdown(Over Time)???????????(?????仯)??
????“?????????(?????仯)”??????????????????????????????????????????????? ?????????λ????
????4??Page Download Time Breakdown????????????????
????“?????????????”??????????????????????????????????????????????????????????仺??????????????????????????????????
????“?????????????”?????DNS??????????????????λ??????SSL??????????????FTP???????????????????????????????????????????????
????5??Page Download Time Breakdown(Over Time)???????????????(?????仯)??
????“?????????????(?????仯)”??????????????????????????????????????????????????????????????????????????????????????????
????“?????????(?????仯)”???“?????????????(?????仯)”??????????????з?????????????????????????????????????????????????λ?????????
????6??Time to First Buffer Breakdown??????λ??????????
????“????λ?????????”????????????Web??????????????λ?????????????????????????????????????/??·?????????????????????????????????????????????????????й???????????й??
?????????????????????HTTP???????????????????????????????????
??????????????????????????HTTP????????????????????????Web??????????λ???????????????????
????7??Time to First Buffer Breakdown(Over Time)??????λ?????????(?????仯)??
????“????λ?????????(?????仯)”????????????Web???????????????????????????????????????е????????????????????????????????????????????????????????????????????????????????
????8??Downloader Component Size(KB)?????????????С??
????“???????????С”???????????????????齨???С???????????????????Щ????????????????????????????????