Re: Request for information about Iperf
Tom,
Lots of variables so I'll start the requests for details, iperf should
be working in this environment.
Which of the plethora of windows OS's was on the laptop?
Which Linux?
Any TCP tuning on either the Linux or windows?
Link latency between the laptop and the server?
What type of wireless interface? (And it's MTU.)
What sort of iperf data rates did you see? (sample output?)
What specific parameters are you using on iperf?
Did (or can) you tcpdump the transfer on the Linux host? (tcptrace and xplot perhaps)
Do you really want UDP? (Or is the actual traffic TCP.)
Paul Hyder
(who actually runs iperf mostly under bwctl :-)
NOAA Forecast Systems Lab
Boulder, CO
>>Date: Tue, 5 Apr 2005 14:07:53 -0500
>>To: tom --at-- adeptgrp.com
>>Subject: DAST: Iperf - tom --at-- adeptgrp.com
>>
>>
>>Contacting DAST re: Request for information about Iperf
>>From: Tom Thienel <tom --at-- adeptgrp.com>
>>
>>Question/Comment:
>>We are attempting to test a very large wireless wide area network using
>
> iperf. The provider belives it is working correctley but we have horriable
> results on application throughput. The TCP testing in iperf was done from
> a widows laptop to a Linux server, and the network provider believes they
> are not accurate. We have a team on site that is trying to test UDP and is
> having some problems. It appears that there may be a conflict in the
> documentation that we have regarding wether iperf will provide bandwith
> testing or not. Please contact me as soon as you can as we need some major
> help on this. I am not understanding the UDP prodecure and have some
> questions about the procedures and results. Please HELP!!!
>
>>Tom Thienel Cell 615-642-5053