LAN network performance issues

[justin victoria]

On 3/9/2014 12:40 PM, Kevin Oberman wrote:
> On Sun, Mar 9, 2014 at 11:44 AM, justin victoria <jv at yeaguy.com 
> <mailto:jv at yeaguy.com>> wrote:
>
>
>     On 3/9/2014 10:40 AM, Kevin Oberman wrote:
>>     You might try installing iperf3 and testing with that. iperf3 is
>>     a major rewrite of iperf and is totally incompatible  with the
>>     older version, so you will need to install iperf3 on all systems
>>
>>     I doubt iperf is the issue,  but this is a way to check.
>>     -- 
>>     R. Kevin Oberman, Network Engineer, Retired
>>     E-mail: rkoberman at gmail.com <mailto:rkoberman at gmail.com>
>
>     iperf3 on windows isnt playing nice..
>
>
> Can you provide more details on the problem on Windows? I know the 
> primary developer of iperf3 (who also maintains iperf2) and would like 
> to be sure he is aware of any and all problems on any platform. He's 
> busy, but iperf3 is part of his day job, so I expect it will be looked 
> at fairly quickly.
> -- 
> R. Kevin Oberman, Network Engineer, Retired
> E-mail: rkoberman at gmail.com <mailto:rkoberman at gmail.com>

I keep getting this error:

justin at sabertooth /cygdrive/c/iperf3-3.0b4-cygwin-v2
$ ./iperf3.exe -c 192.168.1.3
       2 [main] iperf3 3116 find_fast_cwd: WARNING: Couldn't compute 
FAST_CWD pointer.  Please report this problem to
the public mailing list cygwin at cygwin.com


Then when im the server:

error: Unable to start listener for connections: Address already in use
error: Unable to start listener for connections: Address already in use
error: Unable to start listener for connections: Address already in use
error: Unable to start listener for connections: Address already in use

and netstat on win:


ustin at sabertooth /cygdrive/c/iperf3-3.0b4-cygwin-v2
$ netstat

Active Connections

   Proto  Local Address          Foreign Address        State
   TCP    127.0.0.1:5080         sabertooth:49221       ESTABLISHED
   TCP    127.0.0.1:49221        sabertooth:5080        ESTABLISHED
   TCP    127.0.0.1:49637        sabertooth:49638       ESTABLISHED
   TCP    127.0.0.1:49638        sabertooth:49637       ESTABLISHED
   TCP    192.168.1.8:49335      lax04s09-in-f22:https  ESTABLISHED
   TCP    192.168.1.8:49639      yg:imap                ESTABLISHED
   TCP    192.168.1.8:49641      yg:imap                ESTABLISHED
   TCP    192.168.1.8:49648      yg:imap                ESTABLISHED
   TCP    192.168.1.8:51457      yg:ssh                 ESTABLISHED
   TCP    192.168.1.8:51637      yg:ssh                 ESTABLISHED
   TCP    192.168.1.8:52390      bn1wns1011611:https    ESTABLISHED
   TCP    192.168.1.8:52643      lax04s09-in-f1:https   ESTABLISHED
   TCP    192.168.1.8:52647      yg:imap                ESTABLISHED
   TCP    192.168.1.8:52649      yg:imap                ESTABLISHED
   TCP    192.168.1.8:52741      103.10.4.40:ftp        ESTABLISHED
   TCP    192.168.1.8:60435      176.32.96.103:http     ESTABLISHED
   TCP    192.168.1.8:61874      yg:microsoft-ds        ESTABLISHED
   TCP    192.168.1.8:63656      yg:ssh                 ESTABLISHED

justin at sabertooth /cygdrive/c/iperf3-3.0b4-cygwin-v2
$