em interface slow down on 8.0R

[Nick Rogers]

I just discovered it myself today. I'll try and post more info in another
thread.

On Fri, Jan 29, 2010 at 5:43 PM, Jack Vogel <jfvogel at gmail.com> wrote:

> You know, i know absolutely nothing about ALTQ :) This is the first I've
> heard
> about this problem, you should make sure the maintainer of the driver gets
> informed sooner :)
>
> Would be happy to look into it as I have time.
>
> Jack
>
>
>
> On Fri, Jan 29, 2010 at 5:28 PM, Nick Rogers <ncrogers at gmail.com> wrote:
>
>> Does any of this have anything to do with the fact that ALTQ seems to be
>> broken for em(4) under 8.0-RELEASE? I just ran into this similar problem
>> today where my PF/ALTQ hfsc rules no longer seem to do anything on em
>> interfaces.
>>
>> http://forums.freebsd.org/showthread.php?t=6656
>>
>> Any information regarding this would be appreciated. Thanks.
>>
>>
>> On Fri, Jan 29, 2010 at 9:45 AM, Jack Vogel <jfvogel at gmail.com> wrote:
>>
>>> No need, I set it up and tried it, and I was right, it does not fail if
>>> that
>>> routine is not used. The interesting thing is that the igb driver, which
>>> has the same code, works fine.
>>>
>>> In any case, I'm hot on the track of this and hope I can figure it out
>>> today.
>>>
>>> Jack
>>>
>>>
>>> On Fri, Jan 29, 2010 at 5:38 AM, Marco van Tol <marco at tols.org> wrote:
>>>
>>> > On Thu, Jan 28, 2010 at 11:16:02AM -0800, Jack Vogel wrote:
>>> > > I am investigating it, and have a suspicion about what's going on,
>>> you
>>> > can
>>> > > assist in verifying my suspicion.  In if_em.c search for
>>> > "em_setup_vlan_hw",
>>> > > you will find a compile time option that uses that only if
>>> > FreeBSD_version
>>> > > is > 700029, hack the code however you wish so that it uses the OLD
>>> way
>>> > > (ie that it never calls em_setup_vlan_hw_support()) and see if that
>>> makes
>>> > > the issue disappear.
>>> >
>>> > Oh good, I will try that and let you know about the result first chance
>>> I
>>> > get.  Should be days rather then hours, but I'll make it asap.
>>> >
>>> > > If you have any problems or questions email me directly.
>>> >
>>> > Will do, thanks!
>>> >
>>> > Marco
>>> >
>>> >
>>> >
>>> >
>>> > > On Thu, Jan 28, 2010 at 4:17 AM, Marco van Tol <marco at tols.org>
>>> wrote:
>>> > >
>>> > > > On Tue, Jan 26, 2010 at 09:00:35AM -0800, Nick Rogers wrote:
>>> > > > > Is it advisable to patch 8.0-RELEASE kernel sources with the
>>> latest
>>> > > > > (CURRENT) em driver (i.e., src/sys/dev/e1000)? It looks like
>>> there
>>> > are
>>> > > > some
>>> > > > > updates to the driver since 8.0-RELEASE that may fix some
>>> problems?
>>> > > >
>>> > > > While on the em subject, forgive me if I mail this to the
>>> inappropriate
>>> > > > place, but is there any ETA on progress for bug kern/141646?
>>> > > >
>>> > > > I'm currently suffering from it and would be willing to provide
>>> needed
>>> > > > assistance for fixing it.
>>> > > >
>>> > > > Thank you very much in advance,
>>> > > >
>>> > > > Marco van Tol
>>> >
>>> > --
>>> > Better to remain silent and be thought a fool
>>> > than to speak out and remove all doubt.
>>> > - Abraham Lincoln
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>>
>>
>