# Request\_time exstreamly larger than upstream\_response\_time for some queries when using fastcgi **URL:** \ **Category:** NGINX\ **Created:** [November 21, 2012, 6:03am UTC](https://www.ruby-forum.com/t/request-time-exstreamly-larger-than-upstream-response-time-for-some-queries-when-using-fastcgi/224668 "2012-11-21T06:03:39Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![aris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/258eb7/32.png) [@aris](https://www.ruby-forum.com/u/aris)\ **Post date:** [November 21, 2012, 6:03am UTC](https://www.ruby-forum.com/t/request-time-exstreamly-larger-than-upstream-response-time-for-some-queries-when-using-fastcgi/224668/1 "2012-11-21T06:03:39Z")
Hi， I run python in backend, and use nginx to proxy queries to python by using fastcgi. I found some strange things in my nginx log those days. Some queries’ $request\_time are up to 40 seconds which their $upstream\_response\_time are less than 1 second. Here is my fastcgi related conf. fastcgi\_max\_temp\_file\_size 0; fastcgi\_param PATH\_INFO $fastcgi\_script\_name; fastcgi\_param SCRIPT\_NAME “”; fastcgi\_pass python\_backend; fastcgi\_buffers 1024 8K; Do you guys know what’s the problem? Chao ---
**Author:** ![Tian\_C](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/eb8c5e/32.png) [@Tian\_C](https://www.ruby-forum.com/u/Tian_C)\ **Post date:** [November 22, 2012, 4:52am UTC](https://www.ruby-forum.com/t/request-time-exstreamly-larger-than-upstream-response-time-for-some-queries-when-using-fastcgi/224668/2 "2012-11-22T04:52:58Z")
Does anybody have a clue about this problem? * * * From: Tian C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) To: “removed\_email\_address@domain.invalid” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Sent: Wednesday, November 21, 2012 1:02 PM Subject: request\_time exstreamly larger than upstream\_response\_time for some queries when using fastcgi Hi， I run python in backend, and use nginx to proxy queries to python by using fastcgi. I found some strange things in my nginx log those days. Some queries’ $request\_time are up to 40 seconds which their $upstream\_response\_time are less than 1 second. Here is my fastcgi related conf. fastcgi\_max\_temp\_file\_size 0; fastcgi\_param PATH\_INFO $fastcgi\_script\_name; fastcgi\_param SCRIPT\_NAME “”; fastcgi\_pass python\_backend; fastcgi\_buffers 1024 8K; Do you guys know what’s the problem? Chao ---
**Author:** ![Tian\_C](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/eb8c5e/32.png) [@Tian\_C](https://www.ruby-forum.com/u/Tian_C)\ **Post date:** [November 22, 2012, 5:05am UTC](https://www.ruby-forum.com/t/request-time-exstreamly-larger-than-upstream-response-time-for-some-queries-when-using-fastcgi/224668/3 "2012-11-22T05:05:15Z")
> I found some strange things in my nginx log those days. Some queries’ > $request\_time are up to 40 seconds which their $upstream\_response\_time are > less than 1 second. $request\_time is time since start of the request (first bytes read from client) till end of the request (last bytes are sent to client and logging happens) - so while the backend can generate the response in 1 second there might be clients with slow connections or even not waiting for the response (closing it) etc. rr ---
**Author:** ![Tian\_C](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/eb8c5e/32.png) [@Tian\_C](https://www.ruby-forum.com/u/Tian_C)\ **Post date:** [November 22, 2012, 8:03am UTC](https://www.ruby-forum.com/t/request-time-exstreamly-larger-than-upstream-response-time-for-some-queries-when-using-fastcgi/224668/4 "2012-11-22T08:03:26Z")
Hi rr, Thanks for your explain. Some queries’ body sent is just about 1K bytes, however the$request\_time is up to 40 seconds, so i think the connection is tooslow. Is there a way fordiagnosticwhat happened in that time for those slow queries? Thanks, Chao * * * From: Reinis R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) To: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Sent: Thursday, November 22, 2012 12:04 PM Subject: Re: request\_time exstreamly larger than upstream\_response\_time for some queries when using fastcgi > I found some strange things in my nginx log those days. Some queries’ > $request\_time are up to 40 seconds which their $upstream\_response\_time are less > than 1 second. $request\_time is time since start of the request (first bytes read from client) till end of the request (last bytes are sent to client and logging happens) - so while the backend can generate the response in 1 second there might be clients with slow connections or even not waiting for the response (closing it) etc. rr