kern/121257: [tcp] TSO + natd -> slow outgoing tcp traffic

Takefu takefu at airport.fm
Wed Jun 10 05:40:03 UTC 2009


The following reply was made to PR kern/121257; it has been noted by GNATS.

From: Takefu <takefu at airport.fm>
To: bug-followup at FreeBSD.org, vnovy at vnovy.net
Cc:  
Subject: Re: kern/121257: [tcp] TSO + natd  -> slow outgoing tcp traffic
Date: Wed, 10 Jun 2009 14:14:42 +0900

 > Dropped Receive Packets on Half-duplex 10/100 Networks
 >   ------------------------------------------------------
 >   If you have an Intel PCI Express adapter installed, running at 10 or 
 >   100 Mbps, half-duplex, with TCP Segment Offload (TSO) enabled, you may 
 >   observe occasional dropped receive packets.  To work around this 
 >   problem, disable TSO, or update the network to operate in full-duplex 
 >   and/or 1 Gbps.
 
 http://downloadmirror.intel.com/14614/eng/rel_notes_v14_0.txt
 
 :-)
 
 


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