tcpdump mailing list archives
Re: twice past the taps, thence out to net?
From: Eric Dumazet <eric.dumazet () gmail com>
Date: Fri, 16 Dec 2011 20:44:49 +0100
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 - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
Current thread:
- Re: twice past the taps, thence out to net?, (continued)
- Re: twice past the taps, thence out to net? Vijay Subramanian (Dec 14)
- Re: twice past the taps, thence out to net? Eric Dumazet (Dec 15)
- Re: twice past the taps, thence out to net? Rick Jones (Dec 15)
- Re: twice past the taps, thence out to net? Eric Dumazet (Dec 15)
- Re: twice past the taps, thence out to net? Stephen Hemminger (Dec 15)
- Message not available
- Re: twice past the taps, thence out to net? Rick Jones (Dec 15)
- Re: twice past the taps, thence out to net? Eric Dumazet (Dec 15)
- Re: twice past the taps, thence out to net? Jesse Brandeburg (Dec 16)
- Re: twice past the taps, thence out to net? Eric Dumazet (Dec 16)
- Re: twice past the taps, thence out to net? Rick Jones (Dec 16)
- Re: twice past the taps, thence out to net? Eric Dumazet (Dec 16)
- Re: twice past the taps, thence out to net? Wyborny, Carolyn (Dec 20)
- Re: twice past the taps, thence out to net? Eric Dumazet (Dec 15)
- Re: twice past the taps, thence out to net? Vijay Subramanian (Dec 14)
- Re: twice past the taps, thence out to net? Guy Harris (Dec 15)