Utilities to Test Gigabit Ethernet

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We are putting in gigabit ethernet.   In trying to test the speed of the
links in individual rooms, it quickly became apparent that we are
bottlenecked on things like the speed of the hard drive that receives the
files being copied from a server.     We never got utilization much above
19%, with occasional periods of 0% between the peaks on a long copy.

Does anyone make a utility that will allow two computers connected through a
gigabit ethernet infrastructure to saturate the pipe in order to test the
actual capacity and throughput of the gigabit network?    I assume this
would be some kind of peer to peer application that would just exchange
specific repeatable byte sequences between the two computers from memory,
never using disk.

--
Will



Re: Utilities to Test Gigabit Ethernet


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That's about all I get with reasonably modern WinDoze machines on a
gigabit segment.

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ttcp, or the WinDoze version ttcpw

[I hope this isn't the only qualification you are doing on your new
network...]

Re: Utilities to Test Gigabit Ethernet


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Someone mentioned ttcp already. You could also use the effective
replacement, netperf .

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http://www.netperf.org /

Two choices - if you just want individual connection results between a
pair of machines go with "netperf2"

http://www.netperf.org/svn/netperf2/trunk

If you want to run multiple, aggregate, synchronized connections go
with "netperf4"

http://www.netperf.org/svn/netperf4/trunk

Either should be able to compile on just about anything - Windows,
Unix, Linux etc.  If you run into difficulty there is the netperf-talk
mailing list hosted on netperf.org.  

happy benchmarking,

rick jones
--
firebug n, the idiot who tosses a lit cigarette out his car window
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...

Re: Utilities to Test Gigabit Ethernet


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ttcp

-- Robert



Re: Utilities to Test Gigabit Ethernet


Will wrote:
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If you are happy using precompiled windows version   you should try
version 2 of iperf, (kperf)  it provides provides nice graphs,  can do
multicast and bidirectional testing as well.

This executable requires java version 1.4 or above installed on the
windows box

http://dast.nlanr.net/projects/Iperf2.0/kperf_setup.exe



garry

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