Intel 82574L interface wedging - em7.3.2/8.2-STABLE

[Hooman Fazaeli]

Dear Jason

With a link_irq of 4, I still guess your problem is snd_buf filling up during
a temporary link_loss (see: http://lists.freebsd.org/pipermail/freebsd-net/2011-November/030424.html).

I use a patched version of e1000 which addresses this issue and
works good for me but it is based on 7.2.3 and I have just tested in
on 7.3-RELEASE.

If interested, I can send you the sources for test.
You may also port my changes to 7.3.2 and roll your own version.


On 3/8/2012 12:27 AM, Jason Wolfe wrote:
>
> I'm sure it's getting old with all of the recent work put into the
> e1000 driver, but this is still ongoing with MSI-X enabled.  Most
> machines are running an 8.2-STABLE from early Feb, though it appears
> there have been no relevant changes in RELENG_8 since then.  I've
> disabled all possible em options on the devices also to rule that out
> and am still seeing the issue.  I guess reverting back to MSI-X
> disabled is the next step if nothing is spotted.  This box had been
> doing between 1 and 1.5Gb/s steady for the 26 days before the network
> hang.
>
>