[olug] Active bandwidth monitoring

[Carl Lundstedt]

I second iperf.  We used it to exercise and test the new 10 Gbps link at 
UNL when it came online.  I was able to detect that our bonding wasn't 
working on some of our storage servers and tell that we were getting 
very close to line speed out of the fiber.

Carl Lundstedt
UNL
> On 7/17/07, Christopher Cashell <topher-olug at zyp.org> wrote:
>   
>> At Mon, 16 Jul 07, Unidentified Flying Banana Daniel Linder, said:
>>     
>>> I'm trying to pro-actively monitor the "real world" speed that I'm
>>>       
>> getting
>>     
>>> with my @Work connection.
>>>
>>> Questions:
>>> 1: Has anyone run across a tool like this that is free and will run on
>>>       
>> Linux?
>>
>> If you have access to remote machines, iperf[0] will likely do the
>> trick.  It runs as a client/server setup and allows you to measure
>> various bandwidth/performance related statistics between the two hosts.
>>
>> It runs on most Unix variants, and is open source.
>>
>>     
>>> Dan
>>>       
>> [0] http://dast.nlanr.net/Projects/Iperf/
>>
>> --
>> | Christopher
>> +------------------------------------------------+
>> | Here I stand.  I can do no other.              |
>> +------------------------------------------------+
>>
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>>     
>
> Christopher, thank you for a great link.  I have been looking for a long
> time for something to run on a lan to test different branded NIC drivers and
> switches.  This should support LAN speeds.  Look forward to trying out
> "Advisor" and "JPerf" along with it.
>
> http://dast.nlanr.net/projects/advisor/
> http://dast.nlanr.net/Projects/Jperf/
>
> There is also a promising Bandwidth Meter project at Georgia Tech:
> http://www.cc.gatech.edu/fac/Constantinos.Dovrolis/bw.html
>
> SmokePing http://oss.oetiker.ch/smokeping/index.en.html is a project that by
> default would not take up much bandwidth.  The ping payload may be
> configurable which could possibly be adapted to test bandwidth.  It can also
> work with Nagios.
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