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There is no industry standard for Web page response time. In fact, there are several research reports, which provide several reference time indicators:
1. "8 seconds": In the 90 's, the Nielsen study reported that over 8 seconds of waiting time, internet users would lose patience.
2. "4 Seconds": In September 2006, the Akamai and Jupiter study reported that online shoppers had only 4 seconds of patience on a retail website waiting for Web pages.
3. "Horizontal comparison" user cool is the most important. If a Web site took 8 seconds to open a Web page and another site took 4 seconds, people would not hesitate to move to a faster website. The response speed comparison with competitors is the most important, this is very convenient to do, login www.alexa.com can be.
4. "5 Seconds": the web2.0 Web page should start rendering at a time not later than 5 seconds.
5. Jakob Nielsens App Standard: 0.1 seconds-The application UI interface begins to respond to user actions, the user will have a sense of direct control, 1 seconds-the user's ideas will not be interrupted, there will be no waiting for the feeling, 10 seconds-to achieve such a wait time, the user will not play anymore.
6. Domestic "2-5-10" principle: 2 seconds--home, 5 seconds--normal page, 10 seconds--complex query page.