iperf 명령어

iperf 명령어

iperf는 네트워크 대역폭을 측정하는 도구로, TCP 또는 UDP를 사용하여 두 호스트 간의 대역폭을 측정합니다.

iperf 컴파일 및 설치

iperf 소스 코드를 다운로드합니다.

공식 웹사이트(https://iperf.fr/)에서 소스 코드를 다운로드할 수 있습니다.

wget http://sourceforge.net/projects/iperf/files/iperf-2.0.5.tar.gz

다운로드한 파일을 압축 해제합니다.

tar xfz iperf-2.0.5.tar.gz

압축이 해제된 디렉토리로 이동합니다.

cd iperf-2.0.5

컴파일 및 설치를 수행합니다.

./configure

make

make install

이제 iperf가 시스템에 설치되었습니다.

iperf 사용법

iperf는 서버와 클라이언트 모드로 사용할 수 있습니다. 서버는 연결을 수신하고 클라이언트는 연결을 시작하며, 서버로부터 대역폭 측정을 요청합니다.

서버 모드 : AA_Server 192.168.100.200

서버 모드로 iperf를 실행하려면 다음과 같이 실행합니다

[root@AA_Server ~]$ iperf -s

이렇게 하면 기본 포트인 5001번 포트에서 서버가 실행됩니다.

클라이언트 모드 : BB_Client 192.168.100.230

클라이언트 모드로 iperf를 실행하려면 다음과 같이 실행합니다.

[root@BB_Client ~]$ iperf -c  192.168.100.200 -i 1 -t 360 -P 100

추가 옵션

• TCP 또는 UDP를 사용할지 선택할 수 있습니다. 기본적으로 TCP를 사용합니다.
  • TCP 사용: -u 옵션 없이 실행
  • UDP 사용: -u 옵션 사용

테스트 기간을 설정할 수 있습니다. 기본값은 10초입니다. -t 옵션을 사용하여 테스트 시간을 설정할 수 있습니다.

예를 들어, 30초 동안 테스트를 실행하려면

iperf -c <서버주소> -t 30

이렇게 하면 iperf를 컴파일하여 설치하고 기본적인 사용법을 익힐 수 있습니다. 네트워크 대역폭을 측정하려는 서버와 클라이언트 간에 iperf를 실행하여 대역폭을 측정할 수 있습니다.

명령어 옵션

$ iperf --help
Usage: iperf [-s|-c host] [options]
       iperf [-h|--help] [-v|--version]

Client/Server:
  -b, --bandwidth #[kmgKMG | pps]  bandwidth to read/send at in bits/sec or packets/sec
  -e, --enhanced    use enhanced reporting giving more tcp/udp and traffic information
  -f, --format    [kmgKMG]   format to report: Kbits, Mbits, KBytes, MBytes
      --hide-ips           hide ip addresses and host names within outputs
  -i, --interval  #        seconds between periodic bandwidth reports
  -l, --len       #[kmKM]    length of buffer in bytes to read or write (Defaults: TCP=128K, v4 UDP=1470, v6 UDP=1450)
  -m, --print_mss          print TCP maximum segment size (MTU - TCP/IP header)
  -o, --output    <filename> output the report or error message to this specified file
  -p, --port      #        client/server port to listen/send on and to connect
      --permit-key         permit key to be used to verify client and server (TCP only)
      --sum-only           output sum only reports
  -u, --udp                use UDP rather than TCP
  -w, --window    #[KM]    TCP window size (socket buffer size)
  -z, --realtime           request realtime scheduler
  -B, --bind <host>[:<port>][%<dev>] bind to <host>, ip addr (including multicast address) and optional port and device
  -C, --compatibility      for use with older versions does not sent extra msgs
  -M, --mss       #        set TCP maximum segment size (MTU - 40 bytes)
  -N, --nodelay            set TCP no delay, disabling Nagle's Algorithm
  -S, --tos       #        set the socket's IP_TOS (byte) field
  -Z, --tcp-congestion <algo>  set TCP congestion control algorithm (Linux only)

Server specific:
  -p, --port      #[-#]    server port(s) to listen on/connect to
  -s, --server             run in server mode
  -1, --singleclient       run one server at a time
      --histograms         enable latency histograms
      --permit-key-timeout set the timeout for a permit key in seconds
      --tcp-rx-window-clamp set the TCP receive window clamp size in bytes
      --tap-dev   #[<dev>] use TAP device to receive at L2 layer
  -t, --time      #        time in seconds to listen for new connections as well as to receive traffic (default not set)
      --udp-histogram #,#  enable UDP latency histogram(s) with bin width and count, e.g. 1,1000=1(ms),1000(bins)
  -B, --bind <ip>[%<dev>]  bind to multicast address and optional device
  -U, --single_udp         run in single threaded UDP mode
      --sum-dstip          sum traffic threads based upon destination ip address (default is src ip)
  -D, --daemon             run the server as a daemon
  -V, --ipv6_domain        Enable IPv6 reception by setting the domain and socket to AF_INET6 (Can receive on both IPv4 and IPv6)

Client specific:
  -c, --client    <host>   run in client mode, connecting to <host>
      --connect-only       run a connect only test
      --connect-retries #  number of times to retry tcp connect
  -d, --dualtest           Do a bidirectional test simultaneously (multiple sockets)
      --fq-rate #[kmgKMG]  bandwidth to socket pacing
      --full-duplex        run full duplex test using same socket
      --ipg                set the the interpacket gap (milliseconds) for packets within an isochronous frame
      --isochronous <frames-per-second>:<mean>,<stddev> send traffic in bursts (frames - emulate video traffic)
      --incr-dstip         Increment the destination ip with parallel (-P) traffic threads
      --incr-dstport       Increment the destination port with parallel (-P) traffic threads
      --incr-srcip         Increment the source ip with parallel (-P) traffic threads
      --incr-srcport       Increment the source port with parallel (-P) traffic threads
      --local-only         Set don't route on socket
      --near-congestion=[w] Use a weighted write delay per the sampled TCP RTT (experimental)
      --no-connect-sync    No sychronization after connect when -P or parallel traffic threads
      --no-udp-fin         No final server to client stats at end of UDP test
  -n, --num       #[kmgKMG]    number of bytes to transmit (instead of -t)
  -r, --tradeoff           Do a fullduplexectional test individually
      --tcp-write-prefetch set the socket's TCP_NOTSENT_LOWAT value in bytes and use event based writes
  -t, --time      #        time in seconds to transmit for (default 10 secs)
      --trip-times         enable end to end measurements (requires client and server clock sync)
      --txdelay-time       time in seconds to hold back after connect and before first write
      --txstart-time       unix epoch time to schedule first write and start traffic
  -B, --bind [<ip> | <ip:port>] bind ip (and optional port) from which to source traffic
  -F, --fileinput <name>   input the data to be transmitted from a file
  -H, --ssm-host <ip>      set the SSM source, use with -B for (S,G)
  -I, --stdin              input the data to be transmitted from stdin
  -L, --listenport #       port to receive fullduplexectional tests back on
  -P, --parallel  #        number of parallel client threads to run
  -R, --reverse            reverse the test (client receives, server sends)
  -S, --tos                IP DSCP or tos settings
  -T, --ttl       #        time-to-live, for multicast (default 1)
  -V, --ipv6_domain        Set the domain to IPv6 (send packets over IPv6)
  -X, --peer-detect        perform server version detection and version exchange

Miscellaneous:
  -x, --reportexclude [CDMSV]   exclude C(connection) D(data) M(multicast) S(settings) V(server) reports
  -y, --reportstyle C      report as a Comma-Separated Values
  -h, --help               print this message and quit
  -v, --version            print version information and quit

[kmgKMG] Indicates options that support a k,m,g,K,M or G suffix
Lowercase format characters are 10^3 based and uppercase are 2^n based
(e.g. 1k = 1000, 1K = 1024, 1m = 1,000,000 and 1M = 1,048,576)

The TCP window size option can be set by the environment variable
TCP_WINDOW_SIZE. Most other options can be set by an environment variable
IPERF_<long option name>, such as IPERF_BANDWIDTH.

Source at <http://sourceforge.net/projects/iperf2/>
Report bugs to <iperf-users@lists.sourceforge.net>

 

참고URL

- She쥐포s' 이야기 : 네트워크 Bandwidth 측정(iperf, jperf)