Nginx gets halt on 15K connections !!

[Valentin V. Bartenev]

On Friday 08 May 2015 18:15:59 shahzaib shahzaib wrote:
> Hi Valentine,
> 
> 
> >>What's really important is the connections that nginx cannot close.  The
> >>active ones.
> >>How long the connection is active depends on the request processing time.
> 
> 
>   Thanks for pointing that to me. Nginx serving around 800Mb of mp4 files
> but the problem is we're unable to track request processing time. Could you
> please let us know some method/command to find how long the connection
> remains active during request being  process ?


You can add the $request_time variable to your access logs:
http://nginx.org/r/$request_time

And then analyze the logs.


> 
> Though, one thing is for sure, increasing worker_connections resolved our
> problem. Current connections setting is quite high but working well to
> entertain large number of connections with 900Mbps outward traffic. Here's
> our workers and connections settings:
> 
> 
> worker_processors 48;
> worker_connections 102400;
> 

Actually I would recommend you to buy the professional support:
http://nginx.com/support/

I regularly see you trying to solve complicated problems in this mailing
list, so my advise to would be to buy the professional support:


  wbr, Valentin V. Bartenev