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List:       freebsd-hackers
Subject:    Re: FreeBSD 9.0-R em0 issues? - update...
From:       Karl Pielorz <kpielorz_lst () tdx ! co ! uk>
Date:       2012-08-10 12:59:12
Message-ID: 933A64025C87497D5FBDCA75 () OctaHexa64-MkII
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The last time it hung, 'netstat -n -i' showed:

"
Name    Mtu Network       Address              Ipkts Ierrs Idrop    Opkts 
Oerrs  Coll
em0    1500 <Link#5>      00:25:90:31:82:46 355482 10612864185945     0 
291109 3032246910270 1516123455135
"

That's from about 30 seconds after the interface 'stopped' - that number of 
ierrs/oerrs etc. - is just impossible for the traffic the machine handles, 
it looks like it's corrupt?

Having dug around some more - I've now set:

  hw.em.enable_msix=0

After rebooting - the hang hasn't happened since - I'll leave it running 
like that for a while.

If anyone can suggest anything to run when / if this happens again to track 
things down further - or any reason why it's doing it, that'd be great..

-Karl

ps. Should have said before but the machine is running an amd64 kernel.
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