iperf3下载：https://iperf.fr/iperf-download.php#fedora
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[root@localhost home]# rpm -ivhiperf3-3.1.3-1.fc24.x86_64.rpm Preparing... ################################# [100%] Updating / installing... 1:iperf3-3.1.3-1.fc24 ################################# [100%]
服务器端：
[root@localhost home]# iperf3 –s
客户端：
[root@localhost home]# iperf3 -c 192.168.0.222 Connecting to host 192.168.0.222, port 5201 [ 4]local 192.168.0.221 port 47864 connected to 192.168.0.222 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 639 MBytes 5.36 Gbits/sec 86 366 KBytes [ 4] 1.00-2.00 sec 514 MBytes 4.31 Gbits/sec 0 393 KBytes [ 4] 2.00-3.00 sec 570 MBytes 4.78 Gbits/sec 16 301 KBytes [ 4] 3.00-4.00 sec 605 MBytes 5.08 Gbits/sec 0 322 KBytes [ 4] 4.00-5.00 sec 555 MBytes 4.65 Gbits/sec 0 334 KBytes [ 4] 5.00-6.00 sec 581 MBytes 4.87 Gbits/sec 0 341 KBytes ^C[ 4] 6.00-6.54 sec 284 MBytes 4.44 Gbits/sec 0 344 KBytes - - - - - - - - - - - - - - - - - - - - - -- - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-6.54 sec 3.66 GBytes 4.81 Gbits/sec 102 sender [ 4] 0.00-6.54 sec 0.00 Bytes 0.00 bits/sec receiver iperf3: interrupt - the client hasterminated
解释：
默认情况客户端使用TCP协议
-s：指明是服务器端
-c： 指明是客户端
192.168.0.222为服务端IP地址
[root@localhost home]# iperf3 -u -c 192.168.0.222 -b 100M Connecting to host 192.168.0.222, port 5201 warning: Unable to set socket pacing, usingapplication pacing instead [ 4]local 192.168.0.221 port 46516 connected to 192.168.0.222 port 5201 [ ID] Interval Transfer Bandwidth Total Datagrams [ 4] 0.00-1.00 sec 10.8 MBytes 90.8 Mbits/sec 1386 [ 4] 1.00-2.00 sec 11.9 MBytes 99.7 Mbits/sec 1521 [ 4] 2.00-3.00 sec 11.9 MBytes 100 Mbits/sec 1526 [ 4] 3.00-4.00 sec 11.9 MBytes 100 Mbits/sec 1526 [ 4] 4.00-5.00 sec 11.9 MBytes 100 Mbits/sec 1528 ^C[ 4] 5.00-5.38 sec 4.75 MBytes 104 Mbits/sec 608 - - - - - - - - - - - - - - - - - - - - - -- - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 4] 0.00-5.38 sec 63.2 MBytes 98.5 Mbits/sec 0.000 ms 0/8095 (0%) [ 4]Sent 8095 datagrams iperf3: interrupt - the client hasterminated
解释：
-u：指定是udp报文
-b：指定发送带宽大小。
服务器端：
[root@localhost home]# iperf3 -s -p 2480
客户端：
[root@localhost home]# iperf3 -u -c 192.168.0.222 -b 100M -p 2480 Connecting to host 192.168.0.222, port 2480 warning: Unable to set socket pacing, usingapplication pacing instead [ 4]local 192.168.0.221 port 53812 connected to 192.168.0.222 port 2480 [ ID] Interval Transfer Bandwidth Total Datagrams [ 4] 0.00-1.00 sec 10.8 MBytes 90.6 Mbits/sec 1383 [ 4] 1.00-2.00 sec 11.9 MBytes 99.9 Mbits/sec 1524 [ 4] 2.00-3.00 sec 11.9 MBytes 99.9 Mbits/sec 1524 [ 4] 3.00-4.00 sec 12.0 MBytes 100 Mbits/sec 1530 ^C[ 4] 4.00-4.06 sec 1.20 MBytes 167 Mbits/sec 154 - - - - - - - - - - - - - - - - - - - - - -- - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 4] 0.00-4.06 sec 47.8 MBytes 98.7 Mbits/sec 0.000 ms 0/6115 (0%) [ 4]Sent 6115 datagrams iperf3: interrupt - the client hasterminated
解释：
-p：指定端口
[root@localhost home]# 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 bandwidthreports -F,--file name xmit/recv thespecified file -A,--affinity n/n,m set CPU affinity -B,--bindbind to a specific interface -V,--verbose more detailedoutput -J,--json output in JSONformat --logfile f sendoutput to a log file -d,--debug emit debuggingoutput -v,--version show versioninformation and quit -h,--help show this messageand 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 clientconnection then exit Client specific: -c,--client run in client mode, connecting to -u,--udp use UDP rather thanTCP -b,--bandwidth #[KMG][/#] target bandwidth in bits/sec (0 for unlimited) (default 1 Mbit/secfor UDP, unlimited for TCP) (optional slash andpacket 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 forTCP, 8 KB for UDP) --cport bind to a specific client port (TCP andUDP, default: ephemeral port) -P,--parallel # number of parallel client streams torun -R,--reverse run in reverse mode(server sends, client receives) -w,--window #[KMG] set window size / socket buffer size -C,--congestion set TCPcongestion control algorithm (Linux and FreeBSD only) -M,--set-mss # set TCP/SCTP maximum segment size (MTU- 40 bytes) -N,--no-delay set TCP/SCTP nodelay, disabling Nagle's Algorithm -4,--version4 only use IPv4 -6,--version6 only use IPv6 -S,--tos N set the IP 'type ofservice' -L,--flowlabel N set the IPv6 flowlabel (only supported on Linux) -Z,--zerocopy use a 'zero copy'method of sending data -O,--omit N omit the first nseconds -T,--title str prefix every outputline with this string --get-server-output getresults from server --udp-counters-64bit use64-bit counters in UDP test packets --no-fq-socket-pacing disablefair-queuing based socket pacing (Linux only) [KMG] indicates options that support aK/M/G suffix for kilo-, mega-, or giga- iperf3 homepage at:http://software.es.net/iperf/ Report bugs to: https://github.com/esnet/iperf
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