8-STABLE freezes on UDP traffic (DNS), 7.x doesn't

[Mike Tancsa]

At 11:39 AM 3/25/2010, Michael Loftis wrote:
>--On Thursday, March 25, 2010 3:22 PM +0100 Attila Nagy <bra at fsn.hu> wrote:
>
><...>
>>Both unbound and python accepts DNS requests, and it seems when 25%
>>interrupt happens, only unbound is in *udp state, where it is 50%, both
>>programs are in that state.
>
>Try turning of hardware TSO/checksum offload if it's availble on 
>your chipset?  ifconfig <interface> -rxcsum -txcsum -tso -- I'm only 
>using nfe chips right now, but w/ the TSO/CSUM on they lock up 
>constantly under high load.  We're pretty sure it's mostly the nfe 
>driver, or the chips themselves, but have never ruled out some 
>generic 8.x hardware offload issues.

There were also a bunch of commits last night for the bce driver.  If 
its the NIC in RELENG_8, perhaps those bug fixes might help

<http://lists.freebsd.org/pipermail/svn-src-stable-8/2010-March/001804.html>http://lists.freebsd.org/pipermail/svn-src-stable-8/2010-March/001804.html 

http://lists.freebsd.org/pipermail/svn-src-stable-8/2010-March/001803.html

         ---Mike

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