[netperf-talk] Urgent UDP_Stream question

[Budko Dmitry]

Hello Bhavesh Davda!
Maybe, but i'm not sure.

Here's some TCP outputs:
Recv Send Socket Size, bytes 	Send Socket Size, bytes	Message Size, 
bytes 	Elapsed Time, secs 	Throughput, 10^6bits/sec
87380 	16384 	16384 	60.10 	80.95


Recv Send Socket Size, bytes 	Send Socket Size, bytes	Message Size, 
bytes 	Elapsed Time, secs 	Throughput, 10^6bits/sec
87380 	16384 	16384 	60.37 	89.23


And here's some udp outputs for same config:

Socket Size, bytes 	Message Size, bytes 	Elapsed Time, secs 	Messages 
Throughput, 10^6bits/sec
Okay 	Errors
112640 	65507 	60.00 	57408 	0 	501.42
112640 		60.00 	94 		0.82


Socket Size, bytes 	Message Size, bytes 	Elapsed Time, secs 	Messages 
Throughput, 10^6bits/sec
Okay 	Errors
112640 	65507 	60.00 	57232 	0 	499.88
112640 		60.00 	143 		1.25


Netserver was ran as "netserver -4 -p 6543" on pc with dualband gigabit 
router.
Netperf for both UDP and TCP - as "netperf -l 60 -p 6543 -H <server 
ip>,4 –L <client ip>,4 -t UDP_STREAM". <server ip> - IP adress of 
embedded device with wifi adapter, <client ip> - IP adress of the PC 
with router.

Why send throughput on UDP is such high, when recieved is so low? 
Something with settings, or what? How you can explain that?

10.11.2011 17:08, Bhavesh Davda пишет:
> I'm guessing you're the Dmitry I know? :-)
>
> What's up? Perhaps I can help with some basic questions. Please paste 
> the entire outputs of your TCP_STREAM and UDP_STREAM tests.
>
> Cheers
>
> - Bhavesh
>
> (From my iPhone)
>
>
> On Nov 10, 2011, at 6:02 AM, "Budko Dmitry" <mi.wisp at gmail.com 
> <mailto:mi.wisp at gmail.com>> wrote:
>
>>>  Hello guys.
>>>
>>> I am new to netperf and i have urgent situation.
>>>
>>> I have a pc, connected to a netgear wndr3700 wireless dualband 
>>> gigabit router with 300mb\s wifi, on which i run netserver:
>>> netserver -4 -p 6543
>>> And i hace a device on embedded linux with wifi on which i run 
>>> netperf for udp stream test:
>>> netperf -l 60 -p 6543 -H <server ip>,4 –L <client ip>,4 -t TCP_STREAM
>>>
>>> As a result of such test i have following results:
>>> Socket Size, bytes 	Message Size, bytes 	Elapsed Time, secs 
>>> Messages 	Throughput, 10^6bits/sec
>>> Okay 	Errors
>>> 112640 	65507 	60.00 	71511 	0 	624.60
>>>
>>>
>>> On TCP_stream:
>>> 87380 	16384 	16384 	60.03 	53.79
>>>
>>>
>>>
>>> What is the problem with UDP stream? What is going wrong?
>>> Please give me a fast answer. This is very urgent. Thanks.
>>>
>>
>> -- 
>> Best regards, Dmitry Budko.
>> tel.: +375-29-8502706
>> ------------
>> Weesp:
>> www.weespband.com
>> myspace.com/weespband  <http://myspace.com/weespband>
>> youtube.com/user/weespwilldestroyus  <http://youtube.com/user/weespwilldestroyus>
>> last.fm/music/weesp
>> twitter.com/weespband  <http://twitter.com/weespband>
>> http://vkontakte.ru/weespband
>> _______________________________________________
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-- 
Best regards, Dmitry Budko.
tel.: +375-29-8502706
------------
Weesp:
www.weespband.com
myspace.com/weespband
youtube.com/user/weespwilldestroyus
last.fm/music/weesp
twitter.com/weespband
http://vkontakte.ru/weespband

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