Iperf Version 2.0.2 네트워크 대여폭 측정

Iperf Version 2.0.2 네트워크 대여폭 측정

다운로드

iperf.exe

일단 파일을 다운로드 한뒤 실행시켜서 압축을 풉니다
제경우는 C:\a\  폴더 안에다가 풀었습니다

이파일은 서버쪽과 클라이언트쪽 (두 PC 간의 네트워크 대여폭 측정) 에 둘다 파일이 있어야합니다
두 컴퓨터에 설치가 되어야 서로 한쪽은 서버가 되고 한쪽은 클라이언트가 되어서 네트워크 대여폭을
확인 가능합니다

일단 서버쪽에서 실행을 시킵니다

C:\a>iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 8.00 KByte (default)
------------------------------------------------------------

실행시키면 위와 같이 일단 대기상태가 됩니다 이제

클라이언트쪽에서도 도스창을 뛰운뒤

C:\a>iperf -c 192.168.0.174     (형식: iperf -c 서버IP)
------------------------------------------------------------
Client connecting to 192.168.0.174, TCP port 5001
TCP window size: 8.00 KByte (default)
------------------------------------------------------------
[880] local 192.168.0.174 port 3454 connected with 192.168.0.174 port 5001

명령어를 실행하면 위와같이 뜨고 서버쪽에   

------------------------------------------------------------
[836] local 192.168.0.174 port 5001 connected with 192.168.0.174 port 3454
[ ID] Interval       Transfer     Bandwidth
[836]  0.0-10.0 sec   601 MBytes   504 Mbits/sec

위와같이 나타나는걸 볼 수 있습니다

이렇게 뜨는것을 볼 수 있습니다 제경우는 PC 한대를 놓고 자신이 자신에게 테스트했으므로
수치가 크게 나오네요 601Mb 를 옮겼고 대여폭은 504Mb/s 라고 나오는것같군요

아래는 iperf 홈페이지의 원문 설명입니다

Iperf Version 2.0.2

May 3 2005 download source patch for linux-2.6.21 kernel and above

Iperf Version 1.7.0

March 2003

Ajay Tirumala
Feng Qin
Jon Dugan
Jim Ferguson
Kevin Gibbs

What is Iperf? New Features IPv6 mode Representative streams Server as a Daemon Multicast Server & Client Download User Contributed Code FAQ Iperf on Sourceforge Known Problems Documentation and Previous Versions Using Iperf as a Service under Win32 Related Tools Acknowledgements Copyright Jperf - The GUI Front-End to Iperf iperf-users email archives DAST "libdast" library

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What is Iperf?

While tools to measure network performance, such as ttcp, exist, most are very old and have confusing options. Iperf was developed as a modern alternative for measuring TCP and UDP bandwidth performance.

Iperf is a tool to measure maximum TCP bandwidth, allowing the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss.

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New Features

• Running Iperf in bidirectional mode
• Removed STDLIB requirement for Iperf
• Client reporting of server side statistics in UDP tests

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IPv6 Mode

Download the IPv6 version of this release.
Get the IPv6 address of the node using the 'ifconfig' command.
Use the -V option to indicate that you are using an IPv6 address.

Server side:
$ iperf -s -V

Client side:
$ iperf -c <Server IPv6 Address> -V

Using Representative Streams to measure bandwidth

Use the -F or -I option. If you want to test how your network performs with compressed / uncompressed streams, just create representative streams and use the -F option to test it. This is usually due to the link layer compressing data.

The -F option is for file input.
The -I option is for input from stdin.

E.g.
Client: $ iperf -c <server address> -F <file-name>

Client: $ iperf -c <server address> -I

Running the server as a daemon

Use the -D command line option to run the server as a daemon. Redirect the output to a file.
E.g. iperf -s -D > iperfLog. This will have the Iperf Server running as a daemon and the server messages will be logged in the file iperfLog.

Using Iperf as a Service under Win32

There are three options for Win32:

-o outputfilename

output the messages into the specified file

-s -D

install Iperf as a service and run it

-s -R

uninstall the Iperf service

Examples:

iperf -s -D -o iperflog.txt

will install the Iperf service and run it. Messages will be reported into "%windir%\system32\iperflog.txt"

iperf -s -R

will uninstall the Iperf service if it is installed.

Note: If you stop want to restart the Iperf service after having killed it with the Microsoft Management Console or the Windows Task Manager, make sure to use the proper OPTION in the service properties dialog.

Running the multicast server and client

Use the -B option while starting the server to bind it to a multicast address.
E.g. :-iperf -s -u -B 224.0.55.55 -i 1.

This will have the Iperf server listening for datagrams (-u) from the address 224.0.55.55(-B 224.0.55.55), with a periodic reporting interval of 1s (-i 1).

Now, start a client sending packets to this multicast address, with a TTL depending on your Network Topology (if you are unsure, use a high TTL like 64 or higher).

E.g. : iperf -c 224.0.55.55 -u -T 32 -t 10 -i 1. This will have a UDP client (-u) connected to the multicast address 224.0.55.55(-c 224.0.55.55), with a TTL of 32 (-T 32), sending data for 10 seconds (-t 10), with a periodic reporting interval of 1s (-i 1).

Start multiple clients as explained above, sending data to the same multicast server. (If you have multiple servers listening on the multicast address, each of the servers will be getting the data)

Download

Iperf is copyrighted by the University of Illinois, except for the gnu_getopt.c, gnu_getopt_long.c, gnu_getopt.h files, and inet_aton.c, which are under the GNU General Public License.

Getting a Distribution

Latest release: 1.7.0 (13 Mar 2003) Changes Added features:

• Added bidirectional testing both simultaneously and tradeoff
• Added server side statistic reporting on the client for UDP
• Limits on the number of connections and locations for servers

Changes:

• Fixed the IPv6 Multicast implementation
• Removed the SegFault on exit by Ctrl-C for the server
• Thread bug resulting in "pthread create failed" after many clients
• "connect failed" on server for UDP clients when IPv6 is enabled is fixed

Operating System	Distribution Type	File Size	Format
unix / win32	source code	177 KB	.tar.gz
Linux libc 2.1	binary	147 KB	.tar.gz
Linux libc 2.3	binary	68 KB	.tar.gz
FreeBSD 4.7	binary	56 KB	.tar.gz
FreeBSD 5.0	binary	58 KB	.tar.gz
Irix 6.5	binary	290 KB	.tar.gz
MacOS X (Darwin 6.4)	binary	77 KB	.tar.gz
Microsoft Windows	binary	120 KB	EXE
OpenBSD 3.1	binary	88 KB	.tar.gz
Solaris 7	binary	68 KB	.tar.gz
Solaris 8	binary	63 KB	.tar.gz

Iperf is released as a distribution of the C++ source. Pre-compiled binaries for selected operating systems are also available. It is copyrighted by the University of Illinois, except for the gnu_getopt.c, gnu_getopt_long.c, and gnu_getopt.h files, which are under the GNU General Public License.

See the main documentation for instructions on compiling and running Iperf.

Pre-compiled binaries of Version 1.1.1 for selected operating systems are also available.

User Contributed Code

Please note these contributions are provided purely "as-is", as a courtesy to the user community. We can't help you debug or support them, and take no responsibility for them if they format your hard drive or wreck your car.

Iperf 2.0.2 OSX installer - Provided by Ali Asad Lotia (lotia at UMich)
iperf.zip

Iperf 2.0.2 installer for Windows - Provided by Ted Fines (fines@macalester.edu) at Macalester College, St. Paul, MN
kperf_setup.exe

Originally posted at http://www.macalester.edu/crash/software/pc/iperf/kperf_setup.exe

From Ted: "It was built using cygwin, and includes the jperf GUI. It installs into c:\program files\iperf-2.0.2\

The command line binary should just work for you. YMMV with the Java GUI. One one system, it worked, and on another it didn't. Probably something to do with different Java versions.

I made every effort to include the license agreements, and make no claim of credit for authorship of the actual programs. It's just an installer."

Patch for iperf and DCCP on Linux - Provided by Ian McDonald, WAND Network Research Group, University of Waikato, New Zealand

http://wand.net.nz/~iam4/dccp/dccp-iperf-2.0.2-1.diff (Original Patch)

Local copy of patch copied from above URL on 11/1/05

Based on the work that Stephen Hemminger and Arnaldo did earlier.

Notes:

• Applies against 2.0.2
• Uses a default service (can't alter it at present)
• You specify protcol by --protocol/-X (see --help for more details)
• Set the packet size to under MSS by -l or else it will fail
• Works on Linux only as far as I am aware

To do still:

• make code tidier (my code is pretty ugly and Linux specific at the >moment) and get into iperf codebase
• add support for selecting TCP congestion mechanisms.
• use DCCP option for altering packet size

Problems, questions, or suggestions about Iperf?

Subscribe to the Iperf users' mailing list, at:
iperf-users /at/ dast /dot/ nlanr /dot/ net

by sending an email to:
majordomo /at/ dast /dot/ nlanr /dot/ net

with "subscribe iperf-users" (without the quotes) in the BODY of the mail. Make sure the rest of the body of the mail is empty, and that you put no signature file (.sig) on the mail. You will be sent confirmation mail with a string to send back. (Similarly, you can unsubscribe by sending "unsubscribe iperf-users" to the same address.)

Once you're subscribed to iperf-users, please send your feedback there. Thanks!

Note: The Iperf-Users list is publicly archived!

Please note that due the incredible volume of spam we get, this has been turned into a closed list that can only be sent to by subscribers. Non-subscriber email to this list is automatically discarded.

Another way to contact us is to use the DAST contact webform.

Known Problems

If your C/C++ compiler is a cross-compiler, it runs into problems with Iperf configure scripts. The solution is generally to try out different compilers and check which of them is not a cross-compiler. We expect to come up with a better solution shortly.

For a complete list of known problems, refer to the list that comes with the installation.

Please also read the User docs for additional features and detailed examples and the list of known problems which comes along with your install (KNOWN_PROBLEMS) before sending us mail.

Documentation and Previous Versions

Iperf User Docs

Iperf 1.1.1, along with complete documentation.

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Related Tools

Autobuf
You can check out the Automatic TCP Window Tuned FTP, Autobuf. NcFTP has been modified here to achieve greater file transfer rates.

Nettest

You can also check out Nettest, which is a Secure Network Monitoring tool. It includes a set of Network testing tools including Iperf 1.2.

Bandwidth Control (BWCTL)

BWCTL is a command line client application and a scheduling and policy daemon that wraps Iperf.

Currently BWCTL wraps Iperf by actually executing the Iperf command line program on the system. The bwctl client application works by contacting a bwctld process on the two test endpoint systems. BWCTL will work as a 3-party application. The client can arrange a test between two servers on two different systems. If the local system is intended to be one of the endpoints of the test a local bwctld is not required, bwctl will detect that there is no local server and execute the required bwctld functionality directly. bwctld manages and schedules the resources of the host on which it runs.

Here are some additional links you may find useful

Enabling High Performance Data Transfers

This is a very thorough reference for performace tuning and covers lots of OS specific settings.

TCP over WAN Performance Tuning and Troubleshooting

General tuning tips, includes a troubleshooting section which is useful.

Windows 2000 TCP Performance Tuning Tips

Performance tuning specifically for Windows 2000, most of which is applicable to Windows XP as well.

ANL tcpbw100 applet

This applet attempts to determine your link and duplex settings and tries to solve some possible errors.

A User's Guide to TCP Windows

Information on TCP Windows and some examples of how to set them.

NLANR ES: TCP Performance Tools

Lists some performance tools and describes what they are.

TCP Tuning Guide

Extensive guide on TCP Tuning and hints. Specifics for some OSes.

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Acknowledgements

Thanks to Mark Gates (NLANR), Alex Warshavsky (NLANR) and Justin Pietsch (University of Washington) who were responsible for the 1.1.x releases of Iperf. For this release, we would like to thank Bill Cerveny (Internet2), Micheal Lambert (PSC), Dale Finkelson (UNL) and Matthew Zekauskas (Internet2) for help in getting access to IPv6 networks / machines. Special thanks to Matthew Zekauskas (Internet2) for helping out in the FreeBSD implementation. Also, thanks to Kraemer Oliver (Sony) for providing an independent implementation of IPv6 version of Iperf, which provided a useful comparison for testing our features.

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Copyright 1999-2005
The Board of Trustees of the University of Illinois
All rights reserved
See UI License for complete details.