Date: Sat, 6 Mar 2010 18:00:29 +0000 From: Thomas Hurst <tom.hurst@clara.net> To: Jack Vogel <jfvogel@gmail.com> Cc: Nick Rogers <ncrogers@gmail.com>, stable@freebsd.org Subject: Re: em(4) interface hangs under 8.0-RELEASE Message-ID: <20100306180029.GA99452@voi.aagh.net> In-Reply-To: <2a41acea1003051718r241ac3e9w6ceb37bde0128b43@mail.gmail.com> References: <147432021003051648x1a1417dfp3c778922ea2c571f@mail.gmail.com> <2a41acea1003051718r241ac3e9w6ceb37bde0128b43@mail.gmail.com>
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* Jack Vogel (jfvogel@gmail.com) wrote:
> Its using MSI? Given that its PCI-X I have no idea how robust MSI is,
> how bout you compile it with that disabled, use legacy IRQ and see
> if that makes any diff.
I'm seeing similar issues with a quad port 82546EB card, and they're not
using MSI as far as I can tell; IRC 28-31. MSI's are >127 or so I
think?
> Using TSO on anything pre-PCI Express is a bad idea, probably why
> its gotten a bad rep in the em driver.
Don't see TSO in ifconfig options, but will issue an ifconfig em3 -tso
to see if it makes any difference.
Interestingly I can pull 30-60MB/s to/from em0 (LAN) without any
problems, but pulling 5MB/s from em3 has repeatedly led to the interface
just going silent until I bounce it. Quite intermitent though,
sometimes it dies in the first second or two, sometimes I can pull down
20GB without a hitch.
--
Thomas 'Freaky' Hurst
http://hur.st/
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