iperf3命令使用
1，iperf3安装
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%]
2，常用几种命令
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
iperf3 –h 查看所有参数含义
[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,--bind bind 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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