topic Re: Bandwidth value in csv format is 0 through iperf(2.0.4) in i.MX Processors

Bandwidth value in csv format is 0 through iperf(2.0.4)

gbiradar — Mon, 27 Jul 2015 13:04:12 GMT

Hi Experts,

Came back with new issue, i was using iperf utility to test the performance of wifi and the bandwidth it takes to transmit certain amount of data over a interval of 10sec. issue is i was capturing iperf data in csv format so that i can read back the data and process for my further operation based on data. this error is coming in client side which is interacting over minicom terminal to server(PC in my case). following are the commands i passed

client: $ iperf -c <server ip-address> -y C > sample.txt

client: $ vi sample.txt

<dateandtime>,<clientip>,<clientport>,<serverip>,<serverport>,<ID>,<Duration>,<Interval>,<Bandwith><- this bandwidth is zero( '0' ).

normally when i send without csv i'm getting proper value even bandwidth also. if anyone know any idea on this please feel to share i will be glad

Re: Bandwidth value in csv format is 0 through iperf(2.0.4)

b36401 — Wed, 29 Jul 2015 08:46:56 GMT

I have no idea why iperf client does not repord bandwidth.

However you can see the value on server side as well:

# iperf -s

------------------------------------------------------------

Server listening on TCP port 5001

TCP window size: 85.3 KByte (default)

------------------------------------------------------------

[ 4] local 192.168.2.178 port 5001 connected with 192.168.2.178 port 47961

[ ID] Interval Transfer Bandwidth

[ 4] 0.0-10.0 sec 20.1 GBytes 17.3 Gbits/sec

Have a great day,

Victor

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Re: Bandwidth value in csv format is 0 through iperf(2.0.4)

gbiradar — Wed, 29 Jul 2015 12:45:19 GMT

Hi Victor,

I can see iperf output from server side, but my main aim is my application program should read the data at client side(target board) and should produce output. if i get output is csv format it will be cakewalk. if you or anyone else can get anymore input i will be delighted.

Ganesh