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Old 04-03-2011, 01:25 PM   #1
erhardm
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Pros and Cons USB NIC


My traffic is around 10MBdown/2MBup. Would you consider an USB NIC(wired) at these needs? How would the latency be affected?
 
Old 04-03-2011, 02:29 PM   #2
markush
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Hello erhardm, welcome to LQ,

why do you need an USB-NIC? doesn't your computer have a networkadapter? why not using a PCI-adapter?

Could you please provide more information about your situation and what you want to achieve.

Markus
 
Old 04-03-2011, 03:21 PM   #3
erhardm
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Hi Markus,

it has to do with this situation:
http://www.linuxquestions.org/questi...m-d525-872734/

Last edited by erhardm; 04-03-2011 at 03:28 PM.
 
Old 04-03-2011, 05:23 PM   #4
jefro
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A pokey Atom computer will get bogged down with any large amount of traffic. Nic's tend to use a lot of cpu working on checksums. Only higher end cards tend to let you offload that to the nic. Never heard of a usb doing it. But most cheap cards do not either. So if you are trying to use this as a high speed router or firewall you may see some or a lot of slowness on some processes. Remember that there is always a lot of other overhead to any connection both traffic and other resources needed.


Would I guess this to work. Well, yes if the driver is pretty good and your normal other cpu use is low. It would be much better than a second IP on the single nic.
 
Old 04-06-2011, 07:29 AM   #5
erhardm
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I think that 10MBdown/2MBup isn't that much traffic for the Atom. Usb 2.0 supports 60MB of bandwith, but what about the overhead of USB->TCP?

My concerns are latency and CPU time used to work on the USB->TCP. The latter I think that the Atom and Zacate will do the work with no problem. But how would the latency be noticed in the real world scenario, like browsing?

Last edited by erhardm; 04-06-2011 at 07:35 AM.
 
Old 04-06-2011, 04:17 PM   #6
jefro
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I think they would work but I only wanted to warn you of a possible issue.
 
  


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