Iperf 是一个网络性能测试工具。Iperf可以测试大TCP和UDP带宽性能，具有多种参数和UDP特性，可以根据需要调整，可以报告带宽、延迟抖动和数据包丢失。
使用环境：VPS是centos7_64位系统标准安装，如果提示没有wget、rpm、yum命令请自行安装，系统update的iperf是3.1.3版本，默认安装2.0
安装iperf：
[root@fq ~]# wget https://iperf.fr/download/fedora/iperf3-3.1.3-1.fc24.x86_64.rpm
--2020-03-01 11:10:00-- https://iperf.fr/download/fedora/iperf3-3.1.3-1.fc24.x86_64.rpm
Resolving iperf.fr (iperf.fr)... 213.246.63.45, 2a00:c70:1:213:246:63:45:2
Connecting to iperf.fr (iperf.fr)|213.246.63.45|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 78686 (77K) [application/x-redhat-package-manager]
Saving to: ‘iperf3-3.1.3-1.fc24.x86_64.rpm’
100%[=======================================>] 78,686 144KB/s in 0.5s
2020-03-01 11:10:01 (144 KB/s) - ‘iperf3-3.1.3-1.fc24.x86_64.rpm’ saved [78686/78686]
[root@fq ~]# rpm -Uvh iperf3-3.1.3-1.fc24.x86_64.rpm
Preparing... ################################# [100%]
Updating / installing...
1:iperf3-3.1.3-1.fc24 ################################# [100%][root@fq ~]# yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Dependencies Resolved
=================================================================================
Package Arch Version Repository Size
=================================================================================
Updating:
iperf3 x86_64 3.1.7-2.el7 base 79 k
Transaction Summary
=================================================================================
Upgrade 1 Package
Total download size: 79 kIs this ok [y/d/N]: y
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
iperf3-3.1.7-2.el7.x86_64.rpm | 79 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Warning: RPMDB altered outside of yum.
Updating : iperf3-3.1.7-2.el7.x86_64 1/2
Cleanup : iperf3-3.1.3-1.fc24.x86_64 2/2
Verifying : iperf3-3.1.7-2.el7.x86_64 1/2
Verifying : iperf3-3.1.3-1.fc24.x86_64 2/2
Updated:
iperf3.x86_64 0:3.1.7-2.el7
Complete![root@fq ~]# yum install iperf
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Dependencies Resolved
=================================================================================
Package Arch Version Repository Size
=================================================================================
Installing:
iperf x86_64 2.0.13-1.el7 epel 86 k
Transaction Summary
=================================================================================
Install 1 Package
Total download size: 86 k
Installed size: 185 k
Is this ok [y/d/N]: y
Downloading packages:
iperf-2.0.13-1.el7.x86_64.rpm | 86 kB 00:00:01
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : iperf-2.0.13-1.el7.x86_64 1/1
Verifying : iperf-2.0.13-1.el7.x86_64 1/1
Installed:
iperf.x86_64 0:2.0.13-1.el7
[root@fq ~]# iperf -v[root@fq ~]# iperf -s -u[ 3] local 10.140.0.3 port 5001 connected with 182.120.21.91 port 64702
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 3] 0.0-60.3 sec 75.3 MBytes 10.5 Mbits/sec 15.785 ms 456497/510203 (89%)
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