Re: twice past the taps, thence out to net?

[Eric Dumazet <eric.dumazet () gmail com>]

Le vendredi 16 décembre 2011 à 11:35 -0800, Rick Jones a écrit :

> I would *love* to.  All my accessible igb-driven hardware is in an 
> environment locked to the kernels already there :(  Not that it makes it 
> more possible for me to do it, but I suspect it does not require 30 
> receivers to reproduce the dups with netperf TCP_STREAM.  Particularly 
> if the tx queue len is at 256 it may only take 6 or 8. In fact let me 
> try that now...
>
> Yep, with just 8 destinations/concurrent TCP_STREAM tests from the one 
> system one can still see the duplicates in the packet trace taken on the 
> sender.
>
> Perhaps we can trouble the Intel guys to try to reproduce what I've seen?

I do have an igb card somewhere (in fact two dual ports), I'll do the
test myself !

Thanks


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