Re: UDP receiver getting more than the sender is sending .
Is it because the UDP sender is retransmitting packets and not counting those
in its bandwidth calculations while the receiver is considering all incoming
packets ?
-- Nirav.
----- Original Message -----
From: nirav jasapara <jasapara --at-- usc.edu>
Date: Monday, March 22, 2004 6:08 pm
Subject: UDP receiver getting more than the sender is sending .
> Hi,
>
> i am runnning iperf for some performance tests between two machines
> connected
> via a crossover cable. Strangle my UDP receiver ( 341 Mbps ) shows more
> Bandwidth then my sender ( 279 Mbps ).
> <>
>
> [jasapara --at-- node0 ~]$ ./iperf -c 10.1.4.2 -u -B 10.1.4.3 -b 280M -w 256K
> ------------------------------------------------------------
> Client connecting to 10.1.4.2, UDP port 5001
> Binding to local address 10.1.4.3
> Sending 1470 byte datagrams
> UDP buffer size: 256 KByte (WARNING: requested 256 KByte)
> ------------------------------------------------------------
> [ 5] local 10.1.4.3 port 32775 connected with 10.1.4.2 port 5001
> [ ID] Interval Transfer Bandwidth
> [ 5] 0.0-10.0 sec 333 MBytes 279 Mbits/sec
> [ 5] Server Report:
> [ 5] 0.0- 8.2 sec 333 MBytes 341 Mbits/sec 0.082 ms 124/237342
> (0.052%)[ 5] 0.0- 8.2 sec 19879 datagrams received out-of-order
> [ 5] Sent 237342 datagrams
>
> <>
>
> How is that possbile ?
>
> Thanks
> - Nirav.
>
>
>