I am surprised nobody mentioned tank (https://github.com/yandex/yandex-tank https://github.com/yandex/yandex-tank) yet. I found it highly configurable, relative

I am surprised nobody mentioned tank (https://github.com/yandex/yandex-tank https://github.com/yandex/yandex-tank) yet. I found it highly configurable, relatively easy to use. For those who is interested in good perfomance and features, it might be a good choice.