简单的 http 性能测试工具，记录一下使用方法。
安装
MacOS
brew install wrk
Ubuntu/Debian
sudo apt-get install build-essential libssl-dev git -y
git clone https://github.com/wg/wrk.git wrk
cd wrk
sudo make
# move the executable to somewhere in your PATH, ex:
sudo cp wrk /usr/local/bin
CentOS / RedHat / Fedora
sudo yum groupinstall 'Development Tools'
sudo yum install openssl-devel
sudo yum install git
git clone https://github.com/wg/wrk.git wrk
cd wrk
make
# move the executable to somewhere in your PATH
sudo cp wrk /somewhere/in/your/PATH