Nginx flv stream gets too slow on 2000 concurrent connections

[Dennis Jacobfeuerborn]

On 01/23/2013 10:43 AM, shahzaib shahzaib wrote:
> Hello,
> 
>         We are using nginx to serve large size of static files i.e jpg,flv
> and mp4 . Nginx stream works very well on 1000~1500 concurrent connections
> but whenever connections exceeded to 2000~2200, stream gets too slow. We've
> five content server with following specification:-
> 
> Dual Quard Core (8cores/16threads)
> RAM = 32G
> HDD = Sas Hard-Raid 10
> 
> 
> My nginx.conf config is given below :
> 
> user  nginx;
> worker_processes  16;
> worker_rlimit_nofile 300000; #2 filehandlers for each connection;
> 
> #pid        logs/nginx.pid;
> 
> 
> events {
>     worker_connections  6000;
>     use epoll;
> }
> http {
>     include       mime.types;
>     default_type  application/octet-stream;
>     limit_rate 180k;
>     client_body_buffer_size 128K;
>     sendfile_max_chunk 128k;
>     server_tokens off; #Conceals nginx version
>     access_log off;
>     sendfile        on;
>     client_header_timeout  3m;
>     client_body_timeout 3m;
>     send_timeout     3m;
>     keepalive_timeout  0;
> 
> If somebody can help me improving nginx config will be helpful to him. I
> apologize for bad engish :D

What's the required bandwidth for the flv files? What is the bandwidth of
the connection of the system? What is the bandwidth of the uplink to the
Internet?

Regards,
  Dennis