Forum: NGINX How to know if my nginx is in good health?

Hi,

I am running a nginx on EC2 (m1.small) for SSL termination.

I am using 2 workers on Ubuntu, with latest nginx (stable), the network
throughput is around *2Mbps* and system load average is around *2 to 3.*

I am wondering if this system is in good health for now,

e.g.

   1. what is the queue length (I know nginx can handle a lot of 
concurrent
   request, but I mean before the request is being served, how many of 
them
   need to wait before being served)
   2. what is the average queue time for a given request to be served.

I want to know because if my nginx is *cpu bounded* (e.g. due to SSL), I
will need to upgrade to a faster instance.

My current nginx status

Active connections: 4076
server accepts handled requests
 90664283 90664283 104117012
Reading: 525 Writing: 81 Waiting: 3470



Any idea?

On Thu, Nov 22, 2012 at 12:51 PM, howard chen <howachen@gmail.com> 
wrote:
>
> Active connections: 4076
> server accepts handled requests
>  90664283 90664283 104117012
> Reading: 525 Writing: 81 Waiting: 3470
>
>
>
> Any idea?
>
>

why not just

vmstat 1

for few hours and see the cpu usage?

Hi,


On Thu, Nov 22, 2012 at 1:53 PM, Edho Arief <edho@myconan.net> wrote:

> On Thu, Nov 22, 2012 at 12:51 PM, howard chen <howachen@gmail.com>
> wrote:why not just
>
> vmstat 1
>
> for few hours and see the cpu usage?
>
>

My biggest concern is not CPU load, as it tend to tell you nothing, e.g.
what is the implication of decreasing CPU from 70% to 60%?

I am more interested in real figures, e.g.  length of queue of pending
connections decrease from 10 to 5, average request time decrease from 
100ms
to 50ms for example..

Thanks anyway.