安装：

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[root@bogon ~]# rpm -ivh iperf3-3.1.3-1.fc24.x86_64.rpm 
Preparing...                          ################################# [100%]
Updating / installing...
   1:iperf3-3.1.3-1.fc24              ################################# [100%]
#查看
[root@bogon ~]# which iperf3
/usr/bin/iperf3
[root@bogon ~]# 
启动:
/usr/bin/iperf3
[root@bogon ~]# iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------

客户端启动：
C:\Users\lw\Downloads\iperf>iperf3 -c 172.31.00.88
Connecting to host 172.31.00.88, port 5201
[ 4] local 172.31.00.36 port 21848 connected to 172.31.00.88 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 7.88 MBytes 66.0 Mbits/sec
[ 4] 1.00-2.00 sec 7.62 MBytes 64.0 Mbits/sec
[ 4] 2.00-3.00 sec 7.62 MBytes 63.9 Mbits/sec
[ 4] 3.00-4.00 sec 7.62 MBytes 64.0 Mbits/sec
[ 4] 4.00-5.00 sec 7.62 MBytes 64.0 Mbits/sec
[ 4] 5.00-6.00 sec 7.62 MBytes 63.9 Mbits/sec
[ 4] 6.00-7.00 sec 7.62 MBytes 64.0 Mbits/sec
[ 4] 7.00-8.00 sec 7.75 MBytes 65.0 Mbits/sec
[ 4] 8.00-9.00 sec 7.62 MBytes 64.0 Mbits/sec
[ 4] 9.00-10.00 sec 7.62 MBytes 64.0 Mbits/sec

---

[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 76.6 MBytes 64.3 Mbits/sec sender
[ 4] 0.00-10.00 sec 76.6 MBytes 64.3 Mbits/sec receiver

iperf Done.
服务端显示

[root@bogon ~]# iperf3 -s

Server listening on 5201

Accepted connection from 172.31.00.36, port 21847
[ 5] local 172.31.00.88 port 5201 connected to 172.31.00.36 port 21848
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 7.22 MBytes 60.6 Mbits/sec
[ 5] 1.00-2.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 2.00-3.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 3.00-4.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 4.00-5.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 5.00-6.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 6.00-7.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 7.00-8.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 8.00-9.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 9.00-10.00 sec 7.64 MBytes 64.1 Mbits/sec
[ 5] 10.00-10.08 sec 641 KBytes 64.0 Mbits/sec

[ ID] Interval Transfer Bandwidth

[ 5] 0.00-10.08 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.08 sec 76.6 MBytes 63.8 Mbits/sec receiver

Server listening on 5201

说明：
Interval ：时间间隔
Transfer ：转移
Bandwidth：带宽
目前：只有63.8M网络

帮助：
ou have new mail in /var/spool/mail/root
[root@bogon ~]# iperf3 -h
Usage: iperf [-s|-c host] [options]
iperf [-h|--help] [-v|--version]

Server or Client:
-p, --port # server port to listen on/connect to
-f, --format [kmgKMG] format to report: Kbits, Mbits, KBytes, MBytes
-i, --interval # seconds between periodic bandwidth reports
-F, --file name xmit/recv the specified file
-A, --affinity n/n,m set CPU affinity
-B, --bind bind to a specific interface
-V, --verbose more detailed output
-J, --json output in JSON format
--logfile f send output to a log file
-d, --debug emit debugging output
-v, --version show version information and quit
-h, --help show this message and quit
Server specific:
-s, --server run in server mode
-D, --daemon run the server as a daemon
-I, --pidfile file write PID file
-1, --one-off handle one client connection then exit
Client specific:
-c, --client run in client mode, connecting to
-u, --udp use UDP rather than TCP
-b, --bandwidth #[KMG][/#] target bandwidth in bits/sec (0 for unlimited)
(default 1 Mbit/sec for UDP, unlimited for TCP)
(optional slash and packet count for burst mode)
-t, --time # time in seconds to transmit for (default 10 secs)
-n, --bytes #[KMG] number of bytes to transmit (instead of -t)
-k, --blockcount #[KMG] number of blocks (packets) to transmit (instead of -t or -n)
-l, --len #[KMG] length of buffer to read or write
(default 128 KB for TCP, 8 KB for UDP)
--cport bind to a specific client port (TCP and UDP, default: ephemeral port)
-P, --parallel # number of parallel client streams to run
-R, --reverse run in reverse mode (server sends, client receives)
-w, --window #[KMG] set window size / socket buffer size
-C, --congestion set TCP congestion control algorithm (Linux and FreeBSD only)
-M, --set-mss # set TCP/SCTP maximum segment size (MTU - 40 bytes)
-N, --no-delay set TCP/SCTP no delay, disabling Nagle's Algorithm
-4, --version4 only use IPv4
-6, --version6 only use IPv6
-S, --tos N set the IP 'type of service'
-L, --flowlabel N set the IPv6 flow label (only supported on Linux)
-Z, --zerocopy use a 'zero copy' method of sending data
-O, --omit N omit the first n seconds
-T, --title str prefix every output line with this string
--get-server-output get results from server
--udp-counters-64bit use 64-bit counters in UDP test packets
--no-fq-socket-pacing disable fair-queuing based socket pacing
(Linux only)

[KMG] indicates options that support a K/M/G suffix for kilo-, mega-, or giga-

iperf3 homepage at: http://software.es.net/iperf/
Report bugs to: https://github.com/esnet/iperf
You have new mail in /var/spool/mail/root
[root@bogon ~]#

网页题目：命令iperf3命令使用
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