On Thursday 07 May 2015 23:27:44 shahzaib shahzaib wrote:
> Hi,
>
> There are some tweaks required to nginx configurations. If the same
> image which usually takes second to response can takes upto 10-20 seconds
> to load, the wide guess would be exceeding concurrent connections at peak
> traffic. The directive worker_rlimit_nofile value is set much lower as
> compare to worker_connections. Nginx uses upto 2 file descriptors per
> connections, so i would suggest to increase worker_rlimit_nofile value to
> 124000.
>
> Also, default keepalive_timeout value is 65sec due to which your current
> nginx configuration is not optimized to serve more than 2000 concurrent
> connections. Here's how :
>
> (Worker_process)4 * 32768(worker_connections) / 65(Keepalive_timeout ==
> 2016 connections per seconds.
>
> So i would suggest to decrease keepalive_timeout to 5sec directive and
> increase worker_connections to 60000.
>
> Also make sure to decrease timeout values.
>

The keepalive_timeout has nothing to do with the maximum number of
concurrent connections per second.

wbr, Valentin V. Bartenev

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