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Date:	Tue, 3 Jan 2012 08:36:46 +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 Jean-Michel Hautbois <jhautbois@...il.com>:
> 2012/1/2 Jean-Michel Hautbois <jhautbois@...il.com>:
>> 2012/1/2 Eric Dumazet <eric.dumazet@...il.com>:
>>> Le lundi 02 janvier 2012 à 18:20 +0100, Jean-Michel Hautbois a écrit :
>>>
>>>> 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%.
>>>
>>> Ouch...
>>>
>>> Better find out what is happening before even starting coding
>>> anything...
>>>
>>> checkout "netstat -s" on both sender/receiver
>>

After looking to the results, I can't see really bad values or
anything which would explain such a behaviour...
Maybe is there some limits in the driver ? My board is a leopardboard (dm368).
Any idea ?

JM
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