netdev - Re: TCP communication for raw image transmission

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Message-ID: <CAL8zT=gA2pd8wJtBRRLSH_MKXOj3_FzfcXg7v705+8w-xdByLg@mail.gmail.com>
Date:	Mon, 2 Jan 2012 18:20:21 +0100
From:	Jean-Michel Hautbois <jhautbois@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: TCP communication for raw image transmission

2012/1/2 Eric Dumazet <eric.dumazet@...il.com>:
> Le lundi 02 janvier 2012 à 17:52 +0100, Eric Dumazet a écrit :
>> Le lundi 02 janvier 2012 à 17:40 +0100, Jean-Michel Hautbois a écrit :
>>
>> > Mmmh, using netperf you would like to know what the client (my ARM
>> > board) can do ?
>> > How would you test it ? I can have an ARM board on one side, and the
>> > x86 on the other...
>> >
>>
>> x86> netserver &
>> arm> netperf -H <arm_ip_address> -l 60 -t TCP_STREAM
>>
>
> well it should be :
>
> arm> netperf -H <x86_ip_address> -l 60 -t TCP_STREAM

Here we go...

Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    60.01      21.79

It is not very good, AFAIK.
CPU usage is between 17 and 35%.
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