We have seen download/upload irregularities when using it with different types 
of laptops/processors.  Overall it is a good tool.

Something to check first is to test laptop to laptop with a cossover cable and 
see what your results are first.  Nothing like chasing a problem that isn't 
there.

-B-




On Nov 12, 2013, at 2:53 PM, Bret Clark <bcl...@spectraaccess.com> wrote:

> I've used it on a PI and found it to be very accurate.  Next to Iperf, 
> put/get files from an FTP server provides good throughput measurements. 
> 
> On 11/12/2013 02:49 PM, Clay Stewart wrote:
>> Is it accurate using it on a Raspberry-pi? I was loading up my first one 
>> today to try out Iperf. Since someone on this thread mentioned 'CPU', I was 
>> wondering if that would be an issue on a PI? Clocked at 800Mhz..
>> 
>> 
>> On Tue, Nov 12, 2013 at 2:35 PM, Mike Hammett <wispawirel...@ics-il.net> 
>> wrote:
>>> iPerf is very accurate in what it tells you. What you draw from those 
>>> conclusions may or may not be accurate.
>>> 
>>> 
>>> 
>>> -----
>>> Mike Hammett
>>> Intelligent Computing Solutions
>>> http://www.ics-il.com
>>> 
>>> From: "Sam" <w...@csilogan.com>
>>> To: wireless@wispa.org
>>> Sent: Tuesday, November 12, 2013 12:50:51 PM
>>> Subject: [WISPA] iPerf as a Real-World Performance Simulation Tool
>>> 
>>> 
>>> Has anyone used iPerf before? I'm curious of your thoughts as to the 
>>> reliability, and how the results would map to a real-world environment. 
>>> For example, a friend was testing some 3.65 radios (which had no 
>>> connection to the Internet) using iPerf. Based upon the iPerf results, a 
>>> determination was made regarding maximum concurrent users per AP and 
>>> maximum aggregate bandwidth capacity of the radio. For the maximum 
>>> concurrent users I believe they tested this at several different 
>>> download and upload speed for the fictional users.
>>> 
>>> Having never used iPerf, I don't know if the results from their tests 
>>> (which were very poor by the way - much lower than common configurations 
>>> of DL/UL rates as well as number of users per AP I've read many of you 
>>> describing on these lists) map reasonably to what one would expect from 
>>> a given AP, or if they tend to be wonky.
>>> 
>>> Thanks,
>>> Sam
>>> _______________________________________________
>>> Wireless mailing list
>>> Wireless@wispa.org
>>> http://lists.wispa.org/mailman/listinfo/wireless
>>> 
>>> 
>>> _______________________________________________
>>> Wireless mailing list
>>> Wireless@wispa.org
>>> http://lists.wispa.org/mailman/listinfo/wireless
>> 
>> 
>> 
>> -- 
>> 
>> 
>> -- 
>> SCS     
>>   Clay Stewart 
>>   CEO, Tye River Farms, Inc., 
>>   DBA Stewart Computer Services   
>>   434.263.6363 O 
>>   434.942.6510 C
>>   cstew...@stewartcomputerservices.com  
>> “We Keep You Up and Running” 
>>            Wireless Broadband
>>            Programming
>>           Network Services
> 
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