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Latency using Thunderbolt Ethernet in MAC Book Pro late 2013

Posted on 2014-01-28
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Last Modified: 2014-01-29
I have a MacBook Pro Late 2013 edition.  I am using an Apple Thunderbolt to Ethernet adapter and I have also used a Belking Thunderbolt Docking Station with Ethernet and USB 3.0 ports.

When I use the ethernet adapters I am noticing some performance issues.  If I start a ping to another device for example, I get 20 replies followed by 5 "request timed out".  then I get 20 more replies and 5 "requests timed out".  This repeats ad infinitum.

When using software such as Microsoft RDP, the RDP session will freeze for about 5 seconds and then work for about 3 minutes.  Then freeze again and so on.

The problem is restricted to the MacBook pro only, and only when using the Thunderbolt dongle or docking station.  All other devices on the network do not have the issue.  We are using Brocade Datacenter switches which have 1gb/10gb ports.

It happens with both adapters so it doesn't appear to be a problem with just the Apple adapter.  I have tried changing priorities of the network cards and still see the problem.
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Question by:maacevedo
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by:serialband
ID: 39816017
This might be an Apple driver issue.  One user I support found that the Thunderbolt Ethernet adapters run slower in OSX than in Windows BootCamp.  Windows runs it at full speed, so the hardware can support it.  OSX has issues with it.
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Author Comment

by:maacevedo
ID: 39816204
That is what I am thinking as well because of the fact that both adapters experience the same issue.  I would think it is the software implementation. I tried disabling AVB/EAV Model in the advanced configuration and the performance improved a little bit.  Now I get timeouts after about 60 successful pings.
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by:serialband
ID: 39816730
I think you'll have to file a bug report with Apple.  My current boss is into getting all the Apple Beta installs and files bug reports all the time, but I don't know if he's done this one.

It's annoying that apple didn't test their own products.  I guess most people are using wireless at home.
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Author Comment

by:maacevedo
ID: 39817587
Do you have a link on where I can submit a bug report by any chance?
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serialband earned 500 total points
ID: 39818246
I should report that myself.  I didn't know offhand and had to search for it too.
  You might have to sign in with a developer account.
https://bugreport.apple.com/

https://developer.apple.com/bug-reporting/
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Author Closing Comment

by:maacevedo
ID: 39818711
Thanks, I will create the account and report it.
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