$request_time & $upstream_response_time
$request_time & $upstream_response_time Tuesday, July 8, 2014 6:39 PM ||| $request_time| request processing time in seconds with a milliseconds resolution; time elapsed between the first bytes were read from the client and the log write after the last bytes were sent to the client | $request_time 指的就是从接受用户请求数据到发送完回复数据的时间。 | http:/ ginx.org/en/docs/http gx_http_upstream_module.html#variables ||| $upstream_response_time| keeps servers response times in seconds with a milliseconds resolution. Several responses are also separated by commas and colons. | $upstream_response_time 说的有点模糊，它指的是从 Nginx 向后端建立连接开始 到接受完数据然后关闭连接为 止的时间。 || 因为会有重试， || 它可能有多个时间 段。一般来说， ||$upstream_response_time 会比 ||$request_time 时间短。 | 对于 HTTP POST 的请求，两者相差特别大。因为 Nginx 会把 HTTP request body 缓存 住，接受完毕后才会把数据一起发给后端。 On 2012/5/30 15:22, 燕子 wrote:
您 好：
最近在做 nginx 日志分析时发现 $request_time
和 $upstream_response_time 这两个时间值相差特别大， nginx 里面配置了负载
均衡，后端服务器是 resin ，请问这两个时间点的具体含义是什么？相差很大的
原 因是什么？是 nginx 做了什么处理吗？
谢谢