I used Siege a few years ago for some benchmarking and was not impressed. It's a pity because I really like the interface, but Siege is technically lacking. Th

I used Siege a few years ago for some benchmarking and was not impressed. It's a pity because I really like the interface, but Siege is technically lacking. There is a warning in the configuration file against using keep-alive with no explanation as to why. That makes it useless when you need to benchmark persistent connections. Each Siege "user" (i.e. client) has it's own thread, which means they consume a large number of resources. Depending on your CPU, you will also hit a point where more time is spent switching between threads than actually sending requests. I wasn't able to exceed 400 users on my 2011 test machine. That makes it useless when you need to benchmark large numbers of connections.