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JMeter tips中写道：

In the context of Web applications, response time refers to the time elapsed between the submission of a request and the receipt of the resulting HTML. Technically, response time should include time for the browser to render the HTML page, but a browser typically displays the page piece by piece, making the perceived response time less. In addition, typically, a load-test tool calculates the response time without considering rendering time. Therefore, for practical purposes of performance testing, we adopt the definition described above. If in doubt, add a constant to the measured response time, say 0.5 seconds.

为了从Apache JMeter浩繁的Java源码中找出相关函数，幸好有Search and Replace for Windows(下载)能查找文件内容。

值得注意的是，虽然JMeter支持了Cookies、User-Agent、Hidden fields和URL rewriting，但JMeter仍然没能完全模拟任何一款浏览器。

全文阅读：JMeter测试结果时间解析