Nginx max connections

Server NGINX
1

Is there any method to tell if Nginx is hitting max connections, other
than
getting a request timeout? Will anything appear in the logs? I ask for
tuning purposes to get the optimal number of worker_processes and
worker_connections. Also, at what point is it better to increase the
worker_processes vs worker_connections, how can you tell what proportion
is
most efficient?

2

You can try nginx status module.

location ~ ^/status/ {
stub_status on;
access_log off;
}
then http://yourdoamin/status
you can find the current connections.

3

Swish wrote:

Is there any method to tell if Nginx is hitting max connections, other
than getting a request timeout? Will anything appear in the logs? I ask
for tuning purposes to get the optimal number of worker_processes and
worker_connections. Also, at what point is it better to increase the
worker_processes vs worker_connections, how can you tell what proportion
is most efficient?

For tuning purposes it is better to use rrd-graphs.
Here is example (but not best) of how to setup this:
http://blog.kovyrin.net/2006/04/29/monitoring-nginx-with-rrdtool/lang/en/

4

Joe Van D. wrote:

http://blog.kovyrin.net/2006/04/29/monitoring-nginx-with-rrdtool/lang/en/

Well, what’s the best way of doing it? :smiley:

  1. Active connections and other (reading/writing) better to show on
    different graphs, because
    active >> reading and writing.

  2. On graph with requests per second better see 3 lines - accepts,
    handled, requests

See attached samples for example.

5

On Wed, Feb 18, 2009 at 9:24 AM, Anton Y. [email protected]
wrote:

Here is example (but not best) of how to setup this:
http://blog.kovyrin.net/2006/04/29/monitoring-nginx-with-rrdtool/lang/en/

Well, what’s the best way of doing it? :smiley:

6

Are you using RRD Tools?

Thanks.