Re: [e2e] query reg improving TCP performane

Hi Lachlan and All ,

     Once gain thanks a lot.

To send UDP at a rate higher than 1Mbps, you need to specify -b to
> iperf. Unlike TCP, UDP doesn't "probe" for bandwidth, so you have to
> specify the rate you want to send at. From iperf -h:
>
> Usage: iperf [-s|-c host] [options]
> iperf [-h|--help] [-v|--version]
> Client specific:
> -b, --bandwidth #[KM] for UDP, bandwidth to send at in bits/sec
> (default 1 Mbit/sec, implies -u)
>
> I tried with the -b option and once again the results are
> impressive.

      The following are the result.

       $ iperf -u -c 10.128.0.2  -b 100m -t 300 -i 2
       ------------------------------------------------------------
       Client connecting to 10.128.0.2, UDP port 5001
       Sending 1470 byte datagrams
       UDP buffer size:   105 KByte (default)
      ------------------------------------------------------------
      [  3] local 192.168.60.62 port 32772 connected with 10.128.0.2 port
5001
      [  3]  0.0- 2.0 sec  22.9 MBytes  96.0 Mbits/sec
      [  3]  2.0- 4.0 sec  22.8 MBytes  95.6 Mbits/sec
      [  3]  4.0- 6.0 sec  22.8 MBytes  95.8 Mbits/sec
      [  3]  6.0- 8.0 sec  22.8 MBytes  95.8 Mbits/sec
      [  3]  8.0-10.0 sec  22.8 MBytes  95.6 Mbits/sec
      [  3] 10.0-12.0 sec  22.8 MBytes  95.8 Mbits/sec

    So , I am getting a link utilisation of 95 mbs .

    Once again thanks to all who guided me in understanding and completing the experiment satisfactorily.

    Now , I will try to get the router level information and I will get back to the mailing list.

    With Thanks and Regards
    zaman

--

> Lachlan Andrew  Dept of Computer Science, Caltech
> 1200 E California Blvd, Mail Code 256-80, Pasadena CA 91125, USA
> Phone: +1 (626) 395-8820    Fax: +1 (626) 568-3603
>

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