?????????
????WebPageTest
?????????
????????????????????????????http://www.webpagetest.org/
????????
??????????????????????????????????????????????????
????ShowSlow
?????????
????showslow??yslow???????????????http://www.showslow.com/??????????????php???????????????firefox??yslow?????page speed???????dynatrace?????????????????????????????????????????????dynatrace???????????Щ???????????????????????showslow??????浵????????????
??????????????
????FireBug
???????????????????????????е?????????????????????????????????????
????Page Speed
?????????
????????firebug??web????????????????????????chrome???????????google?????
????????
????????FF??firebug??chrome??????????????л???page speed???????????????????????????????????????????????????????????????Щ????????з????
?????????????27??????
????https://developers.google.com/speed/docs/best-practices/rules_intro
???????????????????????￡?
????Google.cn 99??
????Baidu.com 98??
????360buy.com 98??
????Taobao.com 89??
????Dangdang.com 83??
????????
?????????????????????в??????????????????????????淶??????????????????????????????????????????????????????????????????????????????й???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????firebug??chrome???????????????????????
????Speed Tracer
?????????
????????chrome?????????????google??????????web????????????????????????????????????????????
????????
????https://developers.google.com/web-toolkit/speedtracer/get-started
????????
?????????????????????????????????????????????????????????????????????????????е??????????????????????????????????п???????????????????????????????????顣
????Yslow
?????????
????????firebug??????????????yahoo??????page speed??????????????????????????????????????????????????????????????????ЩС???????js???м??????????????δ???????????????Щ????????????page speed??????檔
????Yslow???????23??????
????http://developer.yahoo.com/performance/rules.html
????????????????
????Google.cn 67??
????Baidu.com 94??
????360buy.com 77??
????Taobao.com 70??
????Dangdang.com 71??