[c-nsp] Network performance question - TCP Window issue?
CiscoNSP_list CiscoNSP_list
cisconsp_list at hotmail.com
Sun Apr 29 05:22:14 EDT 2012
>
> Did you run your iperf tests also with UDP? (The numbers don't look
> like it.)
>
> With TCP you won't see many drops on your switches, it will adjust - and
> you will see less throughput.
>
> With iperf available at all three sites I would run tests with UDP streams.
> This won't find the maximum bandwith automatically, you have to set a
> bandwidth for testing and see if you have any packet loss.
>
> Keep in mind that your carrier might police on ethernet bandwidth,
> iperf measures IP throuput.
Thanks Klaus - No, did not test with udp...here it is:
(With 100M had too many drops - 80M was the best:)[ 3] local xxx.xxx.73.54 port 45790 connected with xxx.xxx.65.2 port 5001[ ID] Interval Transfer Bandwidth[ 3] 0.0-10.0 sec 95.4 MBytes 80.0 Mbits/sec[ 3] Sent 68029 datagrams[ 3] Server Report:[ 3] 0.0-10.0 sec 95.4 MBytes 80.0 Mbits/sec 0.044 ms 1/68028 (0.0015%)[ 3] 0.0-10.0 sec 1 datagrams received out-of-order
So to be able to see similar performance with tcp, I will need to adjust tcp window correct?
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