三种安装方式
1、yum安装

yum install iperf3

2、rpm离线安装
https://iperf.fr/iperf-download.php安装包下载连接

rpm -ivh 安装包名称

3、源码安装
https://github.com/esnet/iperf下载源码

./configure
make
make install

最后可能会报错iperf3: error while loading shared libraries: libiperf.so.0: cannot open shared object file: No such file or directory
执行以下命令即可解决

export LD_LIBRARY_PATH=/usr/local/lib/