Determine nginx reverse-proxy load limits

Posted by Aaron on Server Fault See other posts from Server Fault or by Aaron
Published on 2010-03-11T17:06:58Z Indexed on 2010/03/11 17:20 UTC
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Filed under:

linux

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nginx

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reverse-proxy

Hi all:

I have an nginx server (CentOS 5.3, linux) that I'm using as a reverse-proxy load-balancer in front of 8 ruby on rails application servers. As our load on these servers increases, I'm beginning to wonder at what point will the nginx server become a bottleneck? The CPUs are hardly used, but that's to be expected. The memory seems to be fine. No IO to speak of.

So is my only limitation bandwidth on the NICs? Currently, according to some cacti graphs, the server is hitting around 700Kbps ( 5 min average ) on each NIC during high load. I would think this is still pretty low.

Or, will the limit be in sockets or some other resource in the operating system?

Thanks for any thoughts and insights.

Aaron

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