C++ Socket Server - Unable to saturate CPU

Question

I\'ve developed a mini HTTP server in C++, using boost::asio, and now I\'m load testing it with multiple clients and I\'ve been unable to get close to saturating the CPU. I

Answer 1

From your comments on network utilization,
You do not seem to have much network movement.

3 + 2.5 MiB/sec is around the 50Mbps ball-park (compared to your 1Gbps port).

I'd say you are having one of the following two problems,

1. Insufficient work-load (low request-rate from your clients)
   • Blocking in the server (interfered response generation)

Looking at cmeerw's notes and your CPU utilization figures
(idling at 50% + 20% + 0% + 0%)
it seems most likely a limitation in your server implementation.
I second cmeerw's answer (+1).