安装：

yum epel源： yum install epel-release

ifconfig: yum install net-tools

iperf: yum install -y iperf

ab（linux默认自带）： yum -y install httpd-tools

nc yum install -y nc

sshpass yum install -y sshpass

netperf:

wget -c https://codeload.github.com/HewlettPackard/netperf/tar.gz/netperf-2.5.0 tar xf netperf-2.5.0.tar.gz && cd netperf-netperf-2.5.0 ./configure && make && make install ## arm用 ./configure -build=alpha && yum install -y sysstat