[Voyage-linux] Extreme asymmetry/poor throughput on link

[David Gascón]

Hi Edwin,
> Pascal Dornier has sent out a change notice to add one capacitor to 
> the 3Cs for handling high power cards and this board does not (yet) 
> have that added.
Where is this news published? is there any list or something to receive 
alix announcements ?

thanks!

David.


> Not sure what the behavior I should observe if there is a power supply 
> problem.  I'd expect something like rebooting or lockups but so far 
> the board has been very stable.  I even did and ifdown on the card 
> that wasn't part of the tested link.  Does that reduce it's power 
> drain?  I'd think so but don't know by how much.
>
> Too cold for the next couple of days to climb the tank but my next 
> iteration is to replace the ALIX with a WRAP.
>
> Edwin
>
> Jan Hetges wrote:
>> On Thu, Feb 28, 2008 at 12:54:04PM -0500, Edwin Whitelaw wrote:
>> [..snip..]
>>  
>>> The link in question is showing extreme asymmetry on iperf tests 
>>> with as  much as 40mbs going one way but rarely even 2mbs, and 
>>> sometimes even  <1mbs, the other way.
>>>     
>> [..snip..]
>>  
>>> Has anyone experienced this and/or can someone suggest what aspect 
>>> of  the link might at fault? radios? ALIX board? settings? 
>>> interference?
>>>     
>>
>> what about obstacle in LOS/fresnel zone ? on these kind of assymetric 
>> link i normally have a tree/branch into LOS/
>> fresnel zone close to the end where a lot of bandwith reaches, but not
>> leaves!
>>
>> cheers
>>
>>   --Jan
>>
>>   
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>


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