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