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Old 07-04-2013, 03:22 AM   #1
hcourtice
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Registered: Jun 2013
Posts: 5

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iperf in UDP mode always reports one error


Hi,

I'm using Iperf to test throughput on an embedded platform, using a very slow radio link in UDP mode. Whenever I run it, the server reports one more packet than the client, and one error.

Before I go hacking at Iperf, Has anyone seen this?

Client:
# iperf -c 192.168.1.146 -b1000 -l 100 -t 10
WARNING: option -b implies udp testing
------------------------------------------------------------
Client connecting to 192.168.1.146, UDP port 5001
Sending 100 byte datagrams
UDP buffer size: 160 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.1.145 port 34932 connected with 192.168.1.146 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-11.2 sec 1.37 KBytes 1000 bits/sec
[ 3] Sent 14 datagrams
[ 3] Server Report:
[ 3] 0.0-11.2 sec 1.37 KBytes 1000 bits/sec 72.631 ms 1/ 15 (6.7%)
#

Server:
[ 3] local 192.168.1.146 port 5001 connected with 192.168.1.145 port 34932
[ 3] 0.0-11.2 sec 1.37 KBytes 1000 bits/sec 72.631 ms 1/ 15 (6.7%)
^C#
# iperf --version
iperf version 2.0.5 (08 Jul 2010) single threaded
# uname -a
Linux Device 3.5.3-elpro+ #6 PREEMPT Wed Jun 19 12:44:31 EST 2013 armv5tejl GNU/Linux
#
 
Old 07-09-2013, 02:43 PM   #2
nini09
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Registered: Apr 2009
Posts: 1,173

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Where is error I got? How do you know server received more packet?
 
  


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