개요
- 클라이언트와 서버간의 네트워크 대역폭을 체크 Tool
- UDP 로 체크하면 패킷 유실사항을 확인 가능
- MTU, 윈도우 사이즈, 프로토콜 변경 확인 가능
체크방법
- Server IP : 20.0.1.51
- Client IP : 20.0.1.32
[opc@bong-test-243736 ~]$ iperf3 -h
Usage: iperf3 [-s|-c host] [options]
iperf3 [-h|--help] [-v|--version]
Server or Client:
-p, --port # server port to listen on/connect to
-f, --format [kmgtKMGT] format to report: Kbits, Mbits, Gbits, Tbits
-i, --interval # seconds between periodic throughput reports
-F, --file name xmit/recv the specified file
-A, --affinity n/n,m set CPU affinity
-B, --bind <host> bind to the interface associated with the address <host>
-V, --verbose more detailed output
-J, --json output in JSON format
--logfile f send output to a log file
--forceflush force flushing output at every interval
-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
--rsa-private-key-path path to the RSA private key used to decrypt
authentication credentials
--authorized-users-path path to the configuration file containing user
credentials
Client specific:
-c, --client <host> run in client mode, connecting to <host>
--sctp use SCTP rather than TCP
-X, --xbind <name> bind SCTP association to links
--nstreams # number of SCTP streams
-u, --udp use UDP rather than TCP
--connect-timeout # timeout for control connection setup (ms)
-b, --bitrate #[KMG][/#] target bitrate in bits/sec (0 for unlimited)
(default 1 Mbit/sec for UDP, unlimited for TCP)
(optional slash and packet count for burst mode)
--pacing-timer #[KMG] set the timing for pacing, in microseconds (default 1000)
--fq-rate #[KMG] enable fair-queuing based socket pacing in
bits/sec (Linux only)
-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, --length #[KMG] length of buffer to read or write
(default 128 KB for TCP, dynamic or 1460 for UDP)
--cport <port> 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 <algo> 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, 0-255.
The usual prefixes for octal and hex can be used,
i.e. 52, 064 and 0x34 all specify the same value.
--dscp N or --dscp val set the IP dscp value, either 0-63 or symbolic.
Numeric values can be specified in decimal,
octal and hex (see --tos above).
-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
--username username for authentication
--rsa-public-key-path path to the RSA public key used to encrypt
authentication credentials
[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
Server
[opc@bong-test ~]$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 20.0.1.32, port 50506
[ 5] local 20.0.1.51 port 5201 connected to 20.0.1.32 port 50508
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 120 MBytes 1.01 Gbits/sec
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 120 MBytes 1.01 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 178 MBytes 1.49 Gbits/sec receiver
Client
- iperf3 -c [Server IP ]
- 기본값은 프로토콜 : TCP, 포트번호 : 5001, 윈도우 사이즈 : 16Kbyte, 시간 : 10초
[opc@bong-test-243736 ~]$ iperf3 -c 20.0.1.51
Connecting to host 20.0.1.51, port 5201
[ 5] local 20.0.1.32 port 50508 connected to 20.0.1.51 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 129 MBytes 1.08 Gbits/sec 0 3.16 MBytes
^C[ 5] 1.00-1.41 sec 50.0 MBytes 1.03 Gbits/sec 0 3.16 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-1.41 sec 179 MBytes 1.07 Gbits/sec 0 sender
[ 5] 0.00-1.41 sec 0.00 Bytes 0.00 bits/sec receiver
iperf3: interrupt - the client has terminated
동시 세션 측정
- iperf3 -c [Server IP] -P 세션수
- 동시에 세션으로 호출 할 경우 SUM 값으로 확인
[opc@bong-test-243736 ~]$ iperf3 -c 20.0.1.51 -P 10
Connecting to host 20.0.1.51, port 5201
[ 5] local 20.0.1.32 port 60790 connected to 20.0.1.51 port 5201
[ 7] local 20.0.1.32 port 60802 connected to 20.0.1.51 port 5201
[ 9] local 20.0.1.32 port 60806 connected to 20.0.1.51 port 5201
[ 11] local 20.0.1.32 port 60810 connected to 20.0.1.51 port 5201
[ 13] local 20.0.1.32 port 60814 connected to 20.0.1.51 port 5201
[ 15] local 20.0.1.32 port 60822 connected to 20.0.1.51 port 5201
[ 17] local 20.0.1.32 port 60838 connected to 20.0.1.51 port 5201
[ 19] local 20.0.1.32 port 60848 connected to 20.0.1.51 port 5201
[ 21] local 20.0.1.32 port 60856 connected to 20.0.1.51 port 5201
[ 23] local 20.0.1.32 port 60860 connected to 20.0.1.51 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 14.7 MBytes 123 Mbits/sec 0 778 KBytes
[ 7] 0.00-1.00 sec 15.0 MBytes 126 Mbits/sec 0 786 KBytes
[ 9] 0.00-1.00 sec 15.5 MBytes 130 Mbits/sec 0 813 KBytes
[ 11] 0.00-1.00 sec 15.5 MBytes 130 Mbits/sec 0 795 KBytes
[ 13] 0.00-1.00 sec 15.0 MBytes 126 Mbits/sec 0 786 KBytes
[ 15] 0.00-1.00 sec 14.1 MBytes 118 Mbits/sec 1 725 KBytes
[ 17] 0.00-1.00 sec 14.6 MBytes 122 Mbits/sec 0 760 KBytes
[ 19] 0.00-1.00 sec 14.0 MBytes 118 Mbits/sec 0 751 KBytes
[ 21] 0.00-1.00 sec 14.1 MBytes 118 Mbits/sec 0 760 KBytes
[ 23] 0.00-1.00 sec 14.4 MBytes 121 Mbits/sec 0 760 KBytes
[SUM] 0.00-1.00 sec 147 MBytes 1.23 Gbits/sec 1
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 1.00-2.00 sec 13.1 MBytes 110 Mbits/sec 11 961 KBytes
[ 7] 1.00-2.00 sec 11.9 MBytes 100 Mbits/sec 7 952 KBytes
[ 9] 1.00-2.00 sec 12.0 MBytes 100 Mbits/sec 9 970 KBytes
[ 11] 1.00-2.00 sec 12.0 MBytes 101 Mbits/sec 4 1.18 MBytes
[ 13] 1.00-2.00 sec 13.2 MBytes 110 Mbits/sec 7 1.05 MBytes
[ 15] 1.00-2.00 sec 11.6 MBytes 97.0 Mbits/sec 7 900 KBytes
[ 17] 1.00-2.00 sec 12.9 MBytes 109 Mbits/sec 2 1.24 MBytes
[ 19] 1.00-2.00 sec 12.9 MBytes 108 Mbits/sec 4 1.20 MBytes
[ 21] 1.00-2.00 sec 12.9 MBytes 108 Mbits/sec 2 1.29 MBytes
[ 23] 1.00-2.00 sec 12.9 MBytes 109 Mbits/sec 4 1.04 MBytes
[SUM] 1.00-2.00 sec 125 MBytes 1.05 Gbits/sec 57
Error
